|Category||Interface and Interconnect => RS-232 (EIA-232)|
|Description||+5V-Powered, Multichannel RS-232 Drivers/Receivers
The MAX220–MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24 communications interfaces, particularly applications where ±12V is not available.
These parts are especially useful in battery-powered systems, 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 applications where printed circuit board space is critical.
|Company||Maxim Integrated Products|
|Datasheet||Download MAX245EPL datasheet
The MAX220MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24 communications interfaces, particularly applications where ±12V is not available. These parts are especially useful in battery-powered systems, since their low-power shutdown mode reduces power dissipation to less than 5µW. The MAX233, MAX235, and MAX245/MAX246/MAX247 use no external components and are recommended for applications where printed circuit board space is critical.
For Low-Voltage, Integrated ESD Applications to +5.5V, Low-Power, to 1Mbps, True RS-232 Transceivers Using Four 0.1µF External Capacitors (MAX3246E Available in a UCSPTM Package) For Low-Cost Applications MAX221E: ±15kV ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdownTM
TEMP RANGE PIN-PACKAGE PART +70°C 16 Plastic DIP +70°C 16 Narrow +70°C 16 Wide to +70°C Dice* +85°C 16 Plastic DIP +85°C 16 Narrow +85°C 16 Wide +85°C 16 CERDIP +125°C 16 CERDIP +Denotes a lead(Pb)-free/RoHS-compliant package. *Contact factory for dice specifications.
Portable Computers Low-Power Modems Interface Translation Battery-Powered RS-232 Systems Multidrop RS-232 NetworksAutoShutdown and UCSP are trademarks of Maxim Integrated Products, Inc.
Part Number MAX248 MAX249 Power Supply (V) and +7.5 to and +7.5 to No. of RS-232 Drivers/Rx No. of Ext. Caps Nominal Cap. Value (µF) SHDN & ThreeState No Yes No Yes No Yes No Yes Rx Active in SHDN Data Rate (kbps) Features Ultra-low-power, industry-standard pinout Low-power shutdown MAX241 and receivers active in shutdown Available SO 5 drivers with shutdown Standard +5/+12V or battery supplies; same functions as MAX232 Industry standard Higher slew rate, small caps No external caps No external caps, high slew rate Replaces 1488 No external caps Shutdown, three state Complements IBM PC serial port Replaces 1488 and 1489 Standard +5/+12V or battery supplies; single-package solution for IBM PC serial port DIP or flatpack package Complete IBM PC serial port Separate shutdown and enable Open-line detection simplifies cabling High slew rate High slew rate, int. caps, two shutdown modes High slew rate, int. caps, three shutdown modes High slew rate, int. caps, nine operating modes High slew rate, selective half-chip enables Available in quad flatpack package
For pricing, delivery, and ordering information, please contact Maxim Direct 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
(Voltages referenced to GND.) +6V V+ (Note +14V V- (Note to -14V Input Voltages TIN.............................................................-0.3V to (VCC - 0.3V) RIN (Except MAX220)........................................................±30V RIN (MAX220)....................................................................±25V TOUT (Except MAX220) (Note 2)......................................±15V TOUT (MAX220)..............................................................±13.2V Output Voltages ROUT........................................................-0.3V to (VCC + 0.3V) Driver/Receiver Output Short Circuited to GND.........Continuous Continuous Power Dissipation (TA +70°C) 16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)..842mW 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_ +70°C MAX2_ _AE_ MAX2_ _E_ +85°C MAX2_ _AM_ MAX2_ _M_ to +125°C Storage Temperature to +160°C 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
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, VSHDN or VCC = 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.(VCC TA = TMIN to TMAX, unless otherwise noted.) (Note 3)
PARAMETER RS-232 TRANSMITTERS Output Voltage Swing Input Logic-Low Voltage Input Logic-High Voltage All devices except MAX220 MAX220: VCC = +5.0V All except MAX220, normal operation Logic Pullup/lnput Current VSHDN 0V, MAX222/MAX242, shutdown, MAX220 VCC = +5.5V, VSHDN = 0V, VOUT ±15V, MAX222/MAX242 Output Leakage Current VCC = V SHDN = 0V Data Rate Transmitter Output Resistance Output Short-Circuit Current RS-232 RECEIVERS RS-232 Input Voltage Operating Range RS-232 Input Threshold Low RS-232 Input Threshold High VCC = +5V VCC ±30 MAX220 All except MAX243 R2IN (Note 4) All except MAX243 R2IN (Note V VCC = 0V, VOUT = ±2V VOUT = 0V VOUT 300 ±7 VOUT MAX220, V OUT 200 10M kbps mA A All transmitter outputs loaded with 3k to GND V CONDITIONS MIN TYP MAX UNITS(VCC TA = TMIN to TMAX, unless otherwise noted.) (Note 3)
PARAMETER CONDITIONS All except MAX220/MAX243, VCC +5V, no hysteresis in shutdown RS-232 Input Hysteresis MAX243 RS-232 Input Resistance TTL/CMOS Output Voltage Low TTL/CMOS Output Voltage High TTL/CMOS Output Short-Circuit Current TTL/CMOS Output Leakage Current EN Input Threshold Low EN Input Threshold High Supply Voltage Range MAX220 No load VCC Supply Current (VSHDN = VCC), Figures 3k load both inputs = +25°C Shutdown Supply Current to +125°C SHDN Input Leakage Current SHDN Threshold Low SHDN Threshold High , MAX233/MAX242/MAX243 VCC = +25°C, measured from +3V t PHLT, Figure 1 Transmitter Propagation Delay TLL to RS-232 (Normal Operation) t PLHT, Figure MAX233/MAX242/MAX243 MAX220 V/s (MAX220) I OUT 3.2mA I OUT (MAX220) I OUT = -1.0mA Sourcing VOUT = V GND Sinking V OUT = VCC VSHDN = VCC or VEN = VCC (VSHDN = 0V for MAX222), 0V VOUT VCC -2 10 VCC mA MIN 0.2 TYP V mA MAX 1.0 V UNITS
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