MAX3222EMAX3232EMAX3237EMAX3241E MAX3246E: +3.0V to +5.5V, Low-Power, Up to 1Mbps, True RS-232 Transceivers Using Four 0.1µF External Capacitors (MAX3246E Available in a UCSP™ Package)

• 5V-Powered, Multichannel RS-232 Drivers/Receivers

  Ordering Information + Denotes a lead(Pb)-free/RoHS-compliant package.

TEMP RANGE PIN-PACKAGE

MAX220CPE+

• 40°C to +85°C
• 40°C to +85°C
• Contact factory for dice specifications.

  AutoShutdown and UCSP are trademarks of Maxim Integrated Products, Inc.

• 7.5 to +13.2
• 7.5 to +13.2

  4

  4 1.0 (0.1) No — 120 Replaces 1488 MAX235 (MAX205) +5 5/5 — Yes — 120 No external caps MAX236 (MAX206) +5 4/3 4 1.0 (0.1) Yes — 120 Shutdown, three state MAX237 (MAX207) +5 5/3

  4 1.0 (0.1) No — 120 Complements IBM PC serial port MAX238 (MAX208) +5 4/4 4 1.0 (0.1) No — 120 Replaces 1488 and 1489 MAX239 (MAX209) +5 and 3/5 2 1.0 (0.1) No — 120 Standard +5/+12V or battery supplies;

  single-package solution for IBM PC serial port MAX240 +5 5/5

  4

  1.0 Yes — 120 DIP or flatpack package MAX241 (MAX211) +5 4/5 4 1.0 (0.1) Yes — 120 Complete IBM PC serial port MAX242 +5 2/2

  4

  0.1 Yes ✔ 200 Separate shutdown and enable MAX243 +5 2/2

  0.1 No — 200 Open-line detection simplifies cabling MAX244 +5 8/10

  Ordering Information continued at end of data sheet.

  4

  1.0 No — 120 High slew rate MAX245 +5 8/10 — Yes ✔ 120 High slew rate, int. caps, two shutdown modes

  0.1 No — 200 Higher slew rate, small caps MAX233 (MAX203) +5 2/2 — No — 120 No external caps MAX233A +5 2/2 — No — 200 No external caps, high slew rate MAX234 (MAX204) +5 4/0

  MAX248 +5 8/8

  4

  1.0 Yes ✔ 120 High slew rate, selective half-chip enables MAX249 +5 6/10

  4

  MAX246 +5 8/10 — Yes ✔ 120 High slew rate, int. caps, three shutdown modes MAX247 +5 8/9 — Yes ✔ 120 High slew rate, int. caps, nine operating modes

  same functions as MAX232 MAX232 (MAX202) +5 2/2 4 1.0 (0.1) No — 120 (64) Industry standard MAX232A +5 2/2

  4

  MAX220CSE+ MAX220CWE+ 0°C to +70°C 0°C to +70°C 0°C to +70°C

  General Description The MAX220–MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24 communica- tions interfaces, particularly applications where ±12V is not available.

  These parts are especially useful in battery-powered sys- tems, since their low-power shutdown mode reduces power dissipation to less than 5µW. The MAX225, MAX233, MAX235, and MAX245/MAX246/MAX247 use no external components and are recommended for appli- cations where printed circuit board space is critical.

  ________________________Applications Portable Computers Low-Power Modems Interface Translation Battery-Powered RS-232 Systems Multidrop RS-232 Networks

  Next-Generation Device Features ♦ ♦

  For Low-Voltage, Integrated ESD Applications MAX3222E/MAX3232E/MAX3237E/MAX3241E/ MAX3246E: +3.0V to +5.5V, Low-Power, Up to

  1Mbps, True RS-232 Transceivers Using Four 0.1µF External Capacitors (MAX3246E Available in a UCSP™ Package) ♦ ♦

  For Low-Cost Applications MAX221E: ±15kV ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown™ MAX220–MAX249

  Selection Table 19-4323; Rev 16; 7/10

  PART

  16 Plastic DIP

  2 1.0 (0.1) No — 120 Standard +5/+12V or battery supplies;

  16 Narrow SO

  16 Wide SO MAX220C/D 0°C to +70°C Dice* MAX220EPE+ MAX220ESE+ MAX220EWE+ -40°C to +85°C

  16 Plastic DIP

  16 Narrow SO

  16 Wide SO MAX220EJE -40°C to +85°C

  16 CERDIP MAX220MJE -55°C to +125°C

  16 CERDIP Power No. of Nominal SHDN Rx Part Supply RS-232 No. of Cap. Value & Three- Active in Data Rate Number (V) Drivers/Rx Ext. Caps (µF) State SHDN (kbps) Features

  MAX220 +5 2/2 4 0.047/0.33 No — 120 Ultra-low-power, industry-standard pinout MAX222 +5 2/2 4 0.1 Yes — 200 Low-power shutdown MAX223 (MAX213) +5 4/5 4 1.0 (0.1) Yes ✔ 120 MAX241 and receivers active in shutdown MAX225 +5 5/5 — Yes

  ✔ 120 Available in SO MAX230 (MAX200) +5 5/0 4 1.0 (0.1) Yes — 120 5 drivers with shutdown MAX231 (MAX201) +5 and 2/2

1.0 Yes ✔ 120 Available in quad flatpack package

• 5V-Powered, Multichannel RS-232 Drivers/Receivers
• 0.3V) to +14V V- (Note 1) ..............................................................+0.3V to -14V Input Voltages TIN .............................................................-0.3V to (V
• 0.3V) RIN (Except MAX220) ........................................................±30V RIN (MAX220) ....................................................................±25V TOUT (Except MAX220) (Note 2) ......................................±15V TOUT (MAX220)..............................................................±13.2V Output Voltages
• 0.3V) Driver/Receiver Output Short Circuited to GND.........Continuous Continuous Power Dissipation (T

  OUT

  SHDN

  = 0V, V

  OUT

  = ±15V, MAX222/MAX242 ±0.01 ±10

  V OUT = ±15V ±0.01 ±10 Output Leakage Current

  V CC = V

  SHDN

  = 0V MAX220, V

  OUT

  = ±12V ±25 μA Data Rate

  200 116 kbps Transmitter Output Resistance

  V CC = V+ = V- = 0V, V

  = ±2V 300

  μA

  10M

  V OUT = 0V ±7 ±22 Output Short-Circuit Current

  V OUT = 0V MAX220 ±60 mA

  RS-232 RECEIVERS ±30 RS-232 Input Voltage Operating Range

  MAX220 ±25

  V All except MAX243 R2IN

  0.8

  1.3 RS-232 Input Threshold Low

  V CC = +5V MAX243 R2IN (Note 4) -3

  V All except MAX243 R2IN

  1.8

  2.4 RS-232 Input Threshold High

  V CC = +5V MAX243 R2IN (Note 4) -0.5 -0.1

  V CC = +5.5V, V

  V SHDN = 0V, MAX222/MAX242, shutdown, MAX220 ±0.01 ±1

  MAX220–MAX249

  A = +70°C) 16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)..842mW

  ABSOLUTE MAXIMUM RATINGS—MAX220/222/232A/233A/242/243 ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (V

  CC = +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, T

  A = T

  MIN to T

  MAX ‚ unless otherwise noted.) (Note 3) Note 1: For the MAX220, V+ and V- can have a maximum magnitude of 7V, but their absolute difference cannot exceed 13V.

  Note 2: Input voltage measured with TOUT in high-impedance state, V SHDN or V

  CC = 0V. Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

  (Voltages referenced to GND.)

  V CC ...........................................................................-0.3V to +6V V+ (Note 1) ..................................................(V

  CC

  CC

  TOUT..................................................................................±15V ROUT........................................................-0.3V to (V CC

  18-Pin Plastic DIP (derate 11.11mW/°C above +70°C)..889mW 20-Pin Plastic DIP (derate 8.00mW/°C above +70°C) ..440mW 16-Pin Narrow SO (derate 8.70mW/°C above +70°C) ...696mW 16-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW 18-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW 20-Pin Wide SO (derate 10.00mW/°C above +70°C)....800mW 20-Pin SSOP (derate 8.00mW/°C above +70°C) ..........640mW 16-Pin CERDIP (derate 10.00mW/°C above +70°C).....800mW 18-Pin CERDIP (derate 10.53mW/°C above +70°C).....842mW Operating Temperature Ranges MAX2_ _AC_ _, MAX2_ _C_ _ .............................0°C to +70°C MAX2_ _AE_ _, MAX2_ _E_ _ ..........................-40°C to +85°C MAX2_ _AM_ _, MAX2_ _M_ _ .......................-55°C to +125°C Storage Temperature Range .............................-65°C to +160°C

  40 Logic Pullup/lnput Current

  Lead Temperature (soldering, 10s) .................................+300°C Soldering Temperature (reflow)

  20 PDIP (P20M+1) .......................................................+225°C All other lead(Pb)-free packages.................................+260°C All other packages containing lead(Pb) ......................+240°C

  

PARAMETER CONDITIONS MIN TYP MAX UNITS

RS-232 TRANSMITTERS Output Voltage Swing All transmitter outputs loaded with 3k to GND

  ±5 ±8

  V Input Logic-Low Voltage

  1.4

  0.8 V All devices except MAX220

  2

  1.4 Input Logic-High Voltage MAX220: V

  CC

  = +5.0V

  2.4 V All except MAX220, normal operation

  5

  V

• 5V-Powered, Multichannel RS-232 Drivers/Receivers

  MAX220–MAX249 ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued) (V = +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, T = T to T ‚ unless otherwise noted.) (Note 3)

  CC A MIN MAX PARAMETER CONDITIONS MIN TYP MAX UNITS

  All except MAX220/MAX243, V = +5V, no

  CC

  0.2 0.5 1.0 hysteresis in shutdown RS-232 Input Hysteresis

  V MAX220

  0.3 MAX243

  1 3 5 7 RS-232 Input Resistance T = +25°C (MAX220)

  A

  k 3 5 7 I = 3.2mA

  0.2

  0.4 OUT TTL/CMOS Output Voltage Low

  V I = 1.6mA (MAX220)

  0.4 OUT TTL/CMOS Output Voltage High I = -1.0mA

  3.5 V - 0.2

  V OUT

  CC

  Sourcing V = V -2 -10

  OUT GND

  TTL/CMOS Output Short-Circuit Current mA Sinking V = V

  10

  30 OUT CC

  SHDN EN SHDN

  V = V or V = V (V = 0V for

  CC CC

  TTL/CMOS Output Leakage Current ±0.05 ±10 μA MAX222), 0V V

  V OUT CC EN Input Threshold Low MAX242

  1.4

  0.8 V EN Input Threshold High MAX242

  2.0

  1.4 V Supply Voltage Range

  4.5

  5.5 V MAX220

  0.5

  2 No load MAX222/MAX232A/MAX233A/ 4 10 MAX242/MAX243

  SHDN

  V Supply Current (V = V ),

  CC CC

  mA Figures 5, 6, 11, 19 MAX220

  12 3k load MAX222/MAX232A/MAX233A/ both inputs

  15 MAX242/MAX243 T = +25°C

  0.1

  10 A T = 0°C to +70°C

  2

  50 MAX222/ A Shutdown Supply Current μA MAX242

  T = -40°C to +85°C

  2

  50 A T = -55°C to +125°C 35 100

  A

  SHDN Input Leakage Current MAX222/MAX242 ±1 μA SHDN Threshold Low MAX222/MAX242

  1.4

  0.8 V SHDN Threshold High MAX222/MAX242

  2.0

  1.4 V C = 50pF to 2500pF,

  L

  MAX222/MAX232A/ 6 12 30 R

  L = 3k to 7k ,

  MAX233/MAX242/MAX243 V = +5V, T =

  CC A

  Transition Slew Rate V/μs

• 25°C, measured from +3V to -3V or MAX220 1.5

  3

  30.0

• 3V to +3V MAX222/MAX232A/

  1.3

  3.5 MAX233/MAX242/MAX243 t , Figure 1

  PHLT

  MAX220

  4

  10 Transmitter Propagation Delay TLL to μs RS-232 (Normal Operation)

MAX222/MAX232A/

  1.5

  3.5 MAX233/MAX242/MAX243 t , Figure 1

  PLHT

  MAX220

  5

  10

• 5V-Powered, Multichannel RS-232 Drivers/Receivers

  ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued) (V = +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, T = T to T ‚ unless otherwise noted.) (Note 3)

  CC A MIN MAX PARAMETER CONDITIONS MIN TYP MAX UNITS

  MAX222/MAX232A/MAX233/ 0.5 1 MAX242/MAX243 t , Figure 2

  PHLR

  MAX220

  0.6

  3 Receiver Propagation Delay RS-232 to μs TLL (Normal Operation)

  MAX222/MAX232A/MAX233/ 0.6 1 MAX242/MAX243 t , Figure 2

  PLHR

  MAX220

  0.8

  3 t , Figure 2 MAX242

  0.5

  10 PHLS Receiver Propagation Delay RS-232 to μs TLL (Shutdown) t , Figure 2 MAX242

  2.5

  10 PHLS Receiver-Output Enable Time t MAX242, Figure 3 125 500 ns

  ER

  Receiver-Output Disable Time t MAX242, Figure 3 160 500 ns

  DR

  MAX222/MAX242, 0.1μF MAX220–MAX249

  Transmitter-Output Enable Time caps (includes charge-pump t

  250 μs

  ET

  (SHDN Goes High) start-up), Figure 4 Transmitter-Output Disable Time MAX222/MAX242, t

  600 ns

  DT

  (SHDN Goes Low) 0.1μF caps, Figure 4 MAX222/MAX232A/MAX233/ 300 Transmitter + to - Propagation Delay

  MAX242/MAX243 t - t ns

  PHLT PLHT

  Difference (Normal Operation) MAX220 2000 MAX222/MAX232A/MAX233/ 100

  Receiver + to - Propagation Delay MAX242/MAX243 t - t ns

  PHLR PLHR

  Difference (Normal Operation) MAX220 225 Note 3: All units are production tested at hot. Specifications over temperature are guaranteed by design. Note 4: MAX243 R2OUT is guaranteed to be low when R2IN ≥ 0V or is unconnected.

  __________________________________________Typical Operating Characteristics

MAX220/MAX222/MAX232A/MAX233A/MAX242/MAX243

  AVAILABLE OUTPUT CURRENT MAX222/MAX242 OUTPUT VOLTAGE vs. LOAD CURRENT vs. DATA RATE ON-TIME EXITING SHUTDOWN 10 11 +10V 1µF

  V+ OUTPUT LOAD CURRENT

  8 _{MAX220-01 MAX220-02 MAX220-03} 1µF CAPS

  10 FLOWS FROM V+ TO V- EITHER V+ OR V- LOADED V+

  6 0.1µF CAPS

• 5V ALL CAPS 0.1µF

  V CC = +5V

  9 4 1µF

• 5V NO LOAD ON

  SHDN

  V CC = +5.25V

  2

  0V TRANSMITTER OUTPUTS

  8 (EXCEPT MAX220, MAX233A)

  0V ALL CAPS

7 V- LOADED, NO LOAD ON V+

• 2 0.1µF

  V CC = +4.75V 1µF CAPS V+, V- VOLTAGE (V) OUTPUT VOLTAGE (V) 0.1µF 1µF

• 4

  OUTPUT CURRENT (mA)

  6

• 6

  0.1µF CAPS

  5

• 8

  V- V-

V+ LOADED, NO LOAD ON V-

• 10 4 -10V

  5

  10

  15

  20

  25

  10

  20

  30

  40

  

50

60 500µs/div LOAD CURRENT (mA) DATA RATE (kb/s)

• 5V-Powered, Multichannel RS-232 Drivers/Receivers
• 0.3V) to +14V V- ............................................................................+0.3V to -14V Input Voltages TIN ............................................................-0.3V to (V
• 0.3V) RIN .....................................................................................±30V Output Voltages TOUT ..................................................(V+ + 0.3V) to (V- - 0.3V) ROUT........................................................-0.3V to (V
• 0.3V) Short-Circuit Duration, TOUT to GND ........................Continuous Continuous Power Dissipation (T

  15 Shutdown Supply Current T A

  5

  10 mA

  7

  15

  0.4

  1 V+ Supply Current

  1.8

  5 mA

  5

  = +25°C

  V V CC Supply Current No load, T

  15

  50 V Input Logic-High Voltage TIN

  2.0 EN, SHDN (MAX223); EN, SHDN (MAX230/235/236/240/241)

  2.4 Logic Pullup Current

  V TIN = 0V 1.5 200 Receiver Input Voltage

  Operating Range

  V µA µA

  1

  10 V Input Logic-Low Voltage TIN, EN, SHDN (MAX233); EN, SHDN (MAX230/235–241)

  0.8 MAX231/239 MAX223/230/234–238/240/241 MAX232/233

  A = +25°C

  ±5.0 ±7.3

  PARAMETER MAX239 MAX230/235/236/240/241 MAX231 MAX223

  MAX2 _ _ C _ _......................................................0°C to +70°C MAX2 _ _ E _ _ ...................................................-40°C to +85°C MAX2 _ _ M _ _......................................................-55°C to +125°C Storage Temperature Range .............................-65°C to +160°C

  MAX220–MAX249

  (Voltages referenced to GND.)

  V CC ...........................................................................-0.3V to +6V V+ ................................................................(V

  CC

  CC

  CC

  A = +70°C) 14-Pin Plastic DIP (derate 10.00mW/°C above +70°C)....800mW

  16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)....842mW 20-Pin Plastic DIP (derate 11.11mW/°C above +70°C)....889mW 24-Pin Narrow Plastic DIP (derate 13.33mW/°C above +70°C) ..........1.07W 24-Pin Plastic DIP (derate 9.09mW/°C above +70°C)......500mW 16-Pin Wide SO (derate 9.52mW/°C above +70°C).........762mW 20-Pin Wide SO (derate 10.00mW/°C above +70°C).......800mW 24-Pin Wide SO (derate 11.76mW/°C above +70°C).......941mW

  28-Pin Wide SO (derate 12.50mW/°C above +70°C) .............1W 44-Pin Plastic FP (derate 11.11mW/°C above +70°C) .....889mW 14-Pin CERDIP (derate 9.09mW/°C above +70°C) ..........727mW 16-Pin CERDIP (derate 10.00mW/°C above +70°C) ........800mW 20-Pin CERDIP (derate 11.11mW/°C above +70°C) ........889mW 24-Pin Narrow CERDIP

  (derate 12.50mW/°C above +70°C) ..............1W 24-Pin Sidebraze (derate 20.0mW/°C above +70°C)..........1.6W 28-Pin SSOP (derate 9.52mW/°C above +70°C).............762mW Operating Temperature Ranges

  Lead Temperature (soldering, 10s) .................................+300°C Soldering Temperature (reflow)

  CONDITIONS MIN TYP MAX UNITS Output Voltage Swing All transmitter outputs loaded with 3kΩ to ground

  20 PDIP (P20M+1) .........................................................+225°C

  24 PDIP (P24M-1) ..........................................................+225°C All other lead(Pb)-free packages...................................+260°C All other packages containing lead(Pb) ...........................+240°C

  ABSOLUTE MAXIMUM RATINGS—MAX223/MAX230–MAX241 ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241 (MAX223/230/232/234/236/237/238/240/241, V

  CC = +5V ±10%; MAX233/MAX235, V

  CC = +5V ±5%‚ C1–C4 = 1.0µF; MAX231/MAX239, V

  CC = +5V ±10%; V+ = +7.5V to +13.2V; T

  A = T

  

MIN

to T

  MAX ; unless otherwise noted.) (Note 5)

  Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

• 30 +30

• 5V-Powered, Multichannel RS-232 Drivers/Receivers

  ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241 (continued) (MAX223/230/232/234/236/237/238/240/241, V = +5V ±10%; MAX233/MAX235, V = +5V ±5%‚ C1–C4 = 1.0µF;

CC CC

  MAX231/MAX239, V = +5V ±10%; V+ = +7.5V to +13.2V; T = T to T ; unless otherwise noted.) (Note 5) CC A MIN MAX PARAMETER CONDITIONS MIN TYP MAX UNITS

  

Normal operation

SHDN

  V = +5V (MAX223)

  0.8

  1.2 V = 0V (MAX235/236/240/241) SHDN

  T = +25°C, A

  RS-232 Input Logic-Low Voltage

  V V = +5V CC

  Shutdown (MAX223) SHDN

  

V = 0V,

  0.6

  1.5 V = +5V (R4IN, R5IN) EN

  

Normal operation

SHDN

  V = 5V (MAX223)

  1.7

  2.4 V = 0V (MAX235/236/240/241) SHDN

  T = +25°C, A

  RS-232 Input Logic-High Voltage

  V V = +5V CC

  Shutdown (MAX223) SHDN

  

V = 0V,

  1.5

  2.4 MAX220–MAX249 V = +5V (R4IN‚ R5IN)

  EN RS-232 Input Hysteresis V = +5V, no hysteresis in shutdown

  0.2

  0.5

  1.0 V CC

  RS-232 Input Resistance T = +25°C, V = +5V

  3

  5

  7 A CC kΩ TTL/CMOS Output Voltage Low

  I = 1.6mA (MAX231/232/233, I = 3.2mA)

  0.4 V

OUT OUT

  TTL/CMOS Output Voltage High I = -1mA

  3.5 V - 0.4

  V OUT CC

  ; V = 0V (MAX223);

  0V ≤ R OUT ≤ V CC EN TTL/CMOS Output Leakage Current ±0.05 ±10 µA

  EN V = V (MAX235–241)

  CC MAX223 600 Normal Receiver Output Enable Time ns operation

  MAX235/236/239/240/241 400 MAX223 900 Normal Receiver Output Disable Time ns operation

  MAX235/236/239/240/241 250

Normal operation

  0.5

  10 RS-232 IN to Propagation Delay TTL/CMOS OUT, t 4 40 µs

SHDN PHLS

  

V = 0V

C = 150pF L

  (MAX223) t

  6

  40 PLHS MAX223/MAX230/MAX234–241, T = +25°C, V = +5V, A CC

  R = 50pF to 2500pF, measured from

  3

  5.1

  30 L = 3kΩ to 7kΩ‚ C L

• 3V to -3V or -3V to +3V Transition Region Slew Rate

  V/µs

MAX231/MAX232/MAX233, T = +25°C, V = +5V,

A CC

  R = 50pF to 2500pF, measured from

  4

  30 L = 3kΩ to 7kΩ, C L

• 3V to -3V or -3V to +3V Transmitter Output Resistance

  V = V+ = V- = 0V, V = ±2V 300

CC OUT

  Ω Transmitter Output Short-Circuit ±10 mA Current mA

  

Note 5: All units are production tested at hot except for the MAX240, which is production tested at T = +25°C. Specifications over

A temperature are guaranteed by design.

• 5V-Powered, Multichannel RS-232 Drivers/Receivers

  VOLTAGE (V OL

  1 TRANS- MITTER LOADED

  = +25°C C1–C4 = 1µF TRANSMITTER LOADS = 3kΩ || 2500pF

  4 TRANS- MITTERS LOADED T A

  5.0

  V OL (V)

  V CC (V)

  ) vs. V CC

  5.5 TRANSMITTER OUTPUT

  3 TRANS- MITTERS LOADED

  4.5

  4 TRANSMITTERS LOADED

  3 TRANSMITTERS LOADED

  2 TRANSMITTERS LOADED

  1 TRANSMITTER LOADED

  V CC = +5V LOADED, R L = 3kΩ C1–C4 = 1µF

  7.0 T A = +25°C

  2 TRANS- MITTERS LOADED

  

TRANSMITTER OUTPUT VOLTAGE (V

OL

  500 1500 1000 2000

  4

  V SHDN * V- O V+

  

V+, V- WHEN EXITING SHUTDOWN

(1µF CAPACITORS)

_MAX220-13

  MAX223/MAX230–MAX241

  NO LOAD ON V- __________________________________________Typical Operating Characteristics

  V CC = +5V C1–C4 = 1µF ALL TRANSMITTERS UNLOADED V+ LOADED,

  NO LOAD ON V+ T A = +25°C

  2 V+ AND V- EQUALLY LOADED V- LOADED,

  V+, V- (V)

  )

vs. LOAD CAPACITANCE AT

DIFFERENT DATA RATES

  6 ^MAX220-09 CURRENT (mA)

  8

  TRANSMITTER OUTPUT VOLTAGE (V+, V-) vs. LOAD CURRENT

  10

  3 TRANSMITTERS LOADED R L = 3kΩ C1–C4 = 1µF

  V CC = +5V

  V OL (V) 500 1500 1000 2000

  8.0

  SLEW RATE (V/ µ s)

  

500ms/div

  8.0 ^MAX220-04

  4 TRANSMITTERS LOADED

  3 TRANS- MITTERS LOADED

  1 TRANSMITTER LOADED

  7.5

  5.0

  V OH (V)

  V CC (V)

  7.0

  7.4

  ) vs. V CC

  VOLTAGE (V OH

  5.5 TRANSMITTER OUTPUT

  4.5

  6.5

  8.5

  MAX220–MAX249

  2 TRANSMITTERS LOADED T A = +25°C C1–C4 = 1µF TRANSMITTER LOADS = 3kΩ || 2500pF

  6.0 2500

TRANSMITTER OUTPUT VOLTAGE (V

  10.0 ^MAX220-06 LOAD CAPACITANCE (pF)

  V CC = +5V

  9.0

  11.0

  5.0

  6.0

  4.0 2500 TRANSMITTER SLEW RATE vs. LOAD CAPACITANCE

  12.0

  3 TRANSMITTERS LOADED R L = 3kΩ C1–C4 = 1µF

  T A = +25°C

  OH )

vs. LOAD CAPACITANCE AT

  6.6 160kb/s 80kb/s 20kb/s

  6.8

  V OH (V) 500 1500 1000 2000

  7.0 ^MAX220-05

LOAD CAPACITANCE (pF)

  7.2

  6.2

  6.4

  

DIFFERENT DATA RATES

• 6.0
• 9.0
• 6.0
• 7.6 2500
• 6.6
• 6.8 160kb/s 80kb/s 20kb/s T A = +25°C
• 7.5
• 2
• 6
• 4
• 8
• 7.0
• 7.2
• 7.4
• 6.2
• 6.4 ^MAX220-08

  LOAD CAPACITANCE (pF)

• 8.0
• 8.5
• 6.5
• 7.0 ^MAX220-07
• 10 5 10 15 20 25 30 35 40 45 50
• SHUTDOWN POLARITY IS REVERSED FOR NON MAX241 PARTS

• 5V-Powered, Multichannel RS-232 Drivers/Receivers

  ABSOLUTE MAXIMUM RATINGS—MAX225/MAX244–MAX249 (Voltages referenced to GND.) Continuous Power Dissipation (T = +70°C)

  A Supply Voltage (V ) ...............................................-0.3V to +6V 28-Pin Wide SO (derate 12.50mW/°C above +70°C) .............1W

  CC Input Voltages

  40-Pin Plastic DIP (derate 11.11mW/°C above +70°C) ...611mW TIN‚ ENA, ENB, ENR, ENT, ENRA, 44-Pin PLCC (derate 13.33mW/°C above +70°C) ...........1.07W ENRB, ENTA, ENTB..................................-0.3V to (V

• 0.3V) Operating Temperature Ranges

  CC RIN .....................................................................................±25V MAX225C_ _, MAX24_C_ _ ..................................0°C to +70°C TOUT (Note 6)....................................................................±15V MAX225E_ _, MAX24_E_ _ ...............................-40°C to +85°C ROUT........................................................-0.3V to (V + 0.3V) Storage Temperature Range .............................-65°C to +160°C

  CC Short Circuit Duration (one output at a time) Lead Temperature (soldering,10s)) .................................+300°C TOUT to GND ...........................................................Continuous Soldering Temperature (reflow)

  ROUT to GND...........................................................Continuous

  40 PDIP (P40M-2) ..........................................................+225°C All other lead(Pb)-free packages...................................+260°C All other packages containing lead(Pb) ........................+240°C Note 6: Input voltage measured with transmitter output in a high-impedance state, shutdown, or V = 0V.

  CC Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

  MAX220–MAX249 ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249 (MAX225, V = +5.0V ±5%; MAX244–MAX249, V = +5.0V ±10%, external capacitors C1–C4 = 1µF; T = T to T ; unless

  CC CC A MIN MAX otherwise noted.) (Note 7)

  PARAMETER CONDITIONS MIN TYP MAX UNITS RS-232 TRANSMITTERS Input Logic-Low Voltage

  1.4

  0.8 V Input Logic-High Voltage

  2

  1.4 V Normal operation

  10

  50 Logic Pullup/lnput Current Tables 1a–1d µA Shutdown ±0.01 ±1

  Data Rate Tables 1a–1d, normal operation 120 64 kbps Output Voltage Swing ±5 ±7.5

  V All transmitter outputs loaded with 3kΩ to GND ENA ENB ENT ENTA

  V , V , V , V , ±0.01 ±25

ENTB

  

V = V

V = ±15V CC, OUT

  Output Leakage Current (Shutdown) Tables 1a–1d µA

V = 0V,

  CC ±0.01 ±25 V = ±15V

  

OUT

Transmitter Output Resistance V = V+ = V- = 0V, V = ±2V (Note 8) 300

  10M CC OUT Ω Output Short-Circuit Current

  V = 0V ±7 ±30 mA OUT

  RS-232 RECEIVERS RS-232 Input Voltage Operating Range

  ±25

  V RS-232 Input Logic-Low Voltage V = +5V

  0.8

  1.3 V CC

  RS-232 Input Logic-High Voltage V = +5V

  1.8

  2.4 V CC

  RS-232 Input Hysteresis V = +5V

  0.2

  0.5

  1.0 V CC

  RS-232 Input Resistance

  3

  5

  7 kΩ TTL/CMOS Output Voltage Low I = 3.2mA

  0.2

  0.4 V OUT

  TTL/CMOS Output Voltage High I = -1.0mA

  3.5 V - 0.2

  V OUT CC

  Sourcing V = V -2 -10 OUT GND

  TTL/CMOS Output Short-Circuit Current mA Sinking V = V

  10

  30 OUT CC Normal operation, outputs disabled, TTL/CMOS Output Leakage Current

  ±0.05 ±0.10 µA , V ENR_ = V

Tables 1a–1d, 0V ≤ V OUT ≤ V CC CC

• 5V-Powered, Multichannel RS-232 Drivers/Receivers

  ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249 (continued) (MAX225, V

  MAX ; unless otherwise noted.) (Note 7)

  MAX220–MAX249

  MIN to T

  A = T

  CC = +5.0V ±10%, external capacitors C1–C4 = 1µF; T

  CC = +5.0V ±5%; MAX244–MAX249, V

UNITS MIN TYP MAX

  ET No load

MAX244–MAX249

  0.6

  1.4

  0.8 Control Input Logic-high voltage

  2.4

  1.4 V µA T A

  = +25°C t PHLR

  , Figure 2

  0.6

  1.5 t PLHR

  , Figure 2

  0.6

  1.5 Receiver Propagation Delay TLL to RS-232 (Normal Operation) µs t

  PHLS , Figure 2

  10 t PLHS

  11

  , Figure 2

  3.0

  10 Receiver Propagation Delay TLL to RS-232 (Low-Power Mode) µs Receiver-Output Enable Time t

  ER , Figure 3

  100 500 ns Receiver-Output Disable Time t DR

  , Figure 3 100 500 ns MAX225/MAX245–MAX249

  (includes charge-pump startup) 10 ms POWER SUPPLY AND CONTROL LOGIC AC CHARACTERISTICS Note 7: All units production tested at hot. Specifications over temperature are guaranteed by design.

  Note 8: The 300Ω minimum specification complies with EIA/TIA-232E, but the actual resistance when in shutdown mode or V CC = 0V is 10MΩ as is implied by the leakage specification.

  20 t

  10

  5.25 V Transmitter Enable Time MAX225

  4.75

  Supply Voltage Range

  ±1 Logic-low voltage

  5.5 MAX244–MAX249 MAX225 Leakage current

  4.5

  50 V/µs

MAX246–MAX249

(excludes charge-pump startup)

  30

  5

  10

  30 MAX225

  40 V CC Supply Current (Normal Operation) 3kΩ loads on all outputs

MAX244–MAX249

  57 mA Transition Slew Rate

  8

  25 C L = 50pF to 2500pF, R L = 3kΩ to 7kΩ, V CC

  = +5V, T A

  

= +25°C, measured from +3V to -3V or -3V to +3V

T A

  = T MIN to T

  MAX

CONDITIONS

  Shutdown Supply Current µA

  PLHR 350 ns

  5 t PHLT

  , Figure 1

  1.3

  3.5 µs t

  PLHT , Figure 1

  1.5

  3.5 Transmitter Disable Time Transmitter Propagation Delay TLL to RS-232 (Normal Operation)

  µs t DT

• t

  , Figure 4 100 ns Transmitter + to - Propagation

  Delay Difference (Normal Operation) t PHLT

  350 PARAMETER ns Receiver + to - Propagation

• t

  Delay Difference (Normal Operation) t PHLR

  PLHT

• 5V-Powered, Multichannel RS-232 Drivers/Receivers

  

__________________________________________Typical Operating Characteristics

MAX225/MAX244–MAX249

  TRANSMITTER OUTPUT VOLTAGE (V+, V-) vs. LOAD CAPACITANCE AT TRANSMITTER SLEW RATE OUTPUT VOLTAGE DIFFERENT DATA RATES vs. LOAD CAPACITANCE vs. LOAD CURRENT FOR V+ AND V-

  9.0

  18

  10 V CC = +5V WITH ALL TRANSMITTERS DRIVEN

  V CC = +5V

  8 LOADED WITH 5kΩ

  8.5 MAX220-12

  16 MAX220-10 MAX220-11 V+ AND V- LOADED s)

  10kb/s µ

  6 EITHER V+ OR

  8.0

  14 20kb/s V- LOADED

  4 EXTERNAL POWER SUPPLY

  V CC = +5V 1µF CAPACITORS EXTERNAL CHARGE PUMP

  7.5

  12 40kb/s

  2 1µF CAPACITORS

  7.0

  10

  8 TRANSMITTERS 60kb/s 40kb/s DATA RATE V+, V- (V)

  DRIVING 5kΩ AND

• 2

  8

  8 TRANSMITTERS 6.5 2000pF AT 20kb/s

  LOADED WITH 3kΩ

OUTPUT VOLTAGE (V) V- LOADED

• 4

  6.0

  6 100kb/s

  MAX220–MAX249

• 6 V+ AND V- LOADED

TRANSMITTER SLEW RATE (V/

  200kb/s

  4

  5.5

• 8 ALL CAPACITIORS 1µF V+ LOADED

  5.0 2 -10

  1

  2

  3

  4

  5

  1

  2

  3

  4

  5

  5

  10

  

15

  20

  25

  30

  35 LOAD CAPACITANCE (nF) LOAD CAPACITANCE (nF) LOAD CURRENT (mA)

• 5V-Powered, Multichannel RS-232 Drivers/Receivers

• 3V 50%
• 3V V+
• EXCEPT FOR R2 ON THE MAX243 WHERE -3V IS USED.

  EN

  ER )

  V CC

  V OL

  V OH

  DR )

  V CC

  0V 150pF

  V OH RECEIVER OUTPUTS

  V OL

  1 OR 0 T

  X 3kΩ 50pF

  DT ) V+

  SHDN

  0V V-

  0V

  a) TIMING DIAGRAM

  b) TEST CIRCUIT Figure 3. Receiver-Output Enable and Disable Timing Figure 4. Transmitter-Output Disable Timing

  Test Circuits/Timing Diagrams

  0V

  X OUT R

  X 1kΩ

  PLHR t

  MAX220–MAX249

  INPUT OUTPUT

  0V V-

  0V t PLHT t

  PHLT t

  PHLR t

  c) DISABLE TIMING EN INPUT RECEIVER OUTPUTS R

  PHLS t

  PLHS 50%

  V CC 50%

  INPUT OUTPUT

  0V* 50% GND

  Figure 1. Transmitter Propagation-Delay Timing Figure 2. Receiver Propagation-Delay Timing EN R

• 2V

  X IN

• 3V
• 3V
• 5V OUTPUT DISABLE TIME (t
• 5V
• 0.8V
• 3.5V OUTPUT ENABLE TIME (t
• 3V EN

  a) TEST CIRCUIT

  b) ENABLE TIMING

EN INPUT

• 0.5V OUTPUT DISABLE TIME (t
• 2V
• 0.5V
• 5V-Powered, Multichannel RS-232 Drivers/Receivers

  MAX220–MAX249

  1

  RB1–RB4 High-Z, RA5 Low-Power Receive Mode

  1 Shutdown All High-Z All High-Z RA1–RA4 High-Z, RA5 Low-Power Receive Mode

  1

  1 Shutdown All High-Z All Active RA1–RA4 High-Z, RA5 Active All Active

  1 Normal Operation All Active All High-Z All Active RB1–RB4 High-Z, RB5 Active

  TA1–TA4 TB1–TB4 RA1–RA5 RB1–RB5 Normal Operation All Active All Active All Active All Active

  Table 1b. MAX245 Control Pin Configurations Table 1c. MAX246 Control Pin Configurations ENA ENB OPERATION STATUS TRANSMITTERS RECEIVERS

  RB1–RB4 High-Z, RB5 Low-Power Receive Mode

  1 Shutdown All High-Z All High-Z RA1–RA4 High-Z, RA5 Low-Power Receive Mode

  Receive Mode

  ENT ENR OPERATION STATUS TRANSMITTERS RECEIVERS Normal Operation All Active All Active

  1 Shutdown All High-Z All High-Z All Low-Power Receive Mode All Low-Power

  RB5 Active

  1 Normal Operation All Active All Active RA1–RA4 High-Z, RA5 Active RB1–RB4 High-Z,

  Normal Operation All Active All Active All Active All Active

  ENT ENR OPERATION STATUS TRANSMITTERS RECEIVERS TA1–TA4 TB1–TB4 RA1–RA5 RB1–RB5

  

1 Shutdown All High-Z All High-Z

Table 1a. MAX245 Control Pin Configurations

  1

  

1 Shutdown All High-Z All Low-Power Receive Mode

  

1 Normal Operation All Active All High-Z

  Control Pin Configuration Tables

• 5V-Powered, Multichannel RS-232 Drivers/Receivers

  MAX220–MAX249 Table 1d. MAX247/MAX248/MAX249 Control Pin Configurations TRANSMITTERS RECEIVERS MAX247 TA1–TA4 TB1–TB4 RA1–RA4 RB1–RB5 OPERATION

  ENTA ENTB ENRA ENRB STATUS MAX248 TA1–TA4 TB1–TB4 RA1–RA4 RB1–RB4 MAX249 TA1–TA3 TB1–TB3 RA1–RA5 RB1–RB5

  Normal Operation All Active All Active All Active All Active All High-Z, except

  1 Normal Operation All Active All Active All Active RB5 stays active on MAX247

  1 Normal Operation All Active All Active All High-Z All Active All High-Z, except

  1

  1 Normal Operation All Active All Active All High-Z RB5 stays active on MAX247

  1 Normal Operation All Active All High-Z All Active All Active All High-Z, except

  1

  1 Normal Operation All Active All High-Z All Active RB5 stays active on MAX247

  1

  1 Normal Operation All Active All High-Z All High-Z All Active All High-Z, except

  1

  1

  1 Normal Operation All Active All High-Z All High-Z RB5 stays active on MAX247

  1 Normal Operation All High-Z All Active All Active All Active All High-Z, except

  1

  1 Normal Operation All High-Z All Active All Active RB5 stays active on MAX247

  1

  1 Normal Operation All High-Z All Active All High-Z All Active All High-Z, except

  1

  1

  1 Normal Operation All High-Z All Active All High-Z RB5 stays active on MAX247 Low-Power Low-Power

  1

  1 Shutdown All High-Z All High-Z Receive Mode Receive Mode All High-Z, except Low-Power

  1

  1

  1 Shutdown All High-Z All High-Z RB5 stays active on Receive Mode MAX247 Low-Power

  1

  1

  1 Shutdown All High-Z All High-Z All High-Z Receive Mode All High-Z, except

  1

  1

  1

  1 Shutdown All High-Z All High-Z All High-Z RB5 stays active on MAX247

• 5V-Powered, Multichannel RS-232 Drivers/Receivers

  The receiver TTL/CMOS outputs are in a high-imped- ance, three-state mode whenever the three-state enable line is high (for the MAX225/MAX235/MAX236/MAX239– MAX241), and are also high-impedance whenever the shutdown control line is high. When in low-power shutdown mode, the driver outputs are turned off and their leakage current is less than 1µA with the driver output pulled to ground. The driver output leakage remains less than 1µA, even if the transmitter output is backdriven between 0V and (V

  CC

  MAX220–MAX249 _______________Detailed Description The MAX220–MAX249 contain four sections: dual charge-pump DC-DC voltage converters, RS-232 dri- vers, RS-232 receivers, and receiver and transmitter enable control inputs.

  Dual Charge-Pump Voltage Converter The MAX220–MAX249 have two internal charge-pumps that convert +5V to ±10V (unloaded) for RS-232 driver operation. The first converter uses capacitor C1 to dou- ble the +5V input to +10V on C3 at the V+ output. The second converter uses capacitor C2 to invert +10V to -10V on C4 at the V- output.