ICL232

+5V Powered, Dual RS-232 Transmitter/Receiver

OVERVIEW

The ICL232 is a dual RS-232 transmitter/receiver interface circuit that meets all ElA RS-232C and V.28 specifications. It requires a single +5V power supply, and features two onboard charge pump voltage converters which generate +10V and -10V supplies from the 5V supply.

The drivers feature true TTL/CMOS input compatibility, slewrate- limited output, and 300Ω power-off source impedance. The receivers can handle up to +30V, and have a 3kΩ to 7kΩ input impedance. The receivers also have hysteresis to improve noise rejection.

KEY FEATURES

  • Meets all RS-232C and V.28 specifications
  • Requires only single +5V power supply
  • Onboard voltage doubler/inverter
  • Low power consumption
  • 2 drivers
  • ±9V output swing for +5V input
  • 300Ω power-off source impedance
  • output current limiting
  • TTL/CMOS compatible
  • 30V/µs maximum slew rate
  • 2 Receivers
  • ±30V input voltage range
  • 3kΩ to 7kΩ input impedance
  • 0.5V hysteresis to improve noise rejection
  • All critical parameters are guaranteed over the entire commercial, industrial and military temperature ranges
  • Pb-free (RoHS compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ICL232
Basic Information
Production Status
Mass Production
# of Rx
2
# of Tx
2
High ESD Protection
No
Data Rate
0.12 Mbps
Supply Voltage Vcc (Min) (V)
4.5
Supply Voltage Vcc (Max) (V)
5.5
Manual Shutdown
No
Auto Shutdown
No
Rx Disable
No
Capacitance Value
1 µF
IS Enabled (mA)
5
IS Disabled
N/A µA
Qualification Level
Standard
Supply Voltage Vcc Range (V)
4.5 to 5.5
Temperature Range
0 to +70

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