ICL3232IB

Overview

The ICL3232IB is a dual driver, dual receiver RS-232 transceiver manufactured by Intersil. It operates on a single power supply ranging from 3V to 5.5V and supports data rates up to 250 kbps. The device features an internal charge pump requiring only four external 0.1µF capacitors. It provides 15kV ESD protection on RS-232 pins and includes automatic powerdown functionality that reduces standby current to 1µA. The component is housed in a 16-pin SOIC-Narrow package and is designed for full-duplex communication.

Feature Summary

• Automatic powerdown circuitry significantly reduces standby power consumption
• Integrated charge pump eliminates the need for external voltage sources
• High noise immunity through receiver hysteresis
• Robust electrostatic discharge protection on interface pins

Applications

• Battery-powered handheld devices and PDAs
• Laptop and notebook computer serial ports
• Modems and peripheral equipment connections
• Portable digital cameras and cellular phones

Procurement Notes

Verify the suffix 'IB' against official Renesas or Intersil documentation to confirm it denotes the industrial temperature range (-40°C to +85°C) and SOIC-16 package variant. Ensure the specific ordering code matches the required RoHS compliance status and moisture sensitivity level before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring low-power RS-232 connectivity with minimal external capacitance. It serves as a direct replacement for legacy MAX207E or HIN207E devices in 3V applications. Verify that the system's available board space accommodates the small footprint enabled by the use of standard 0.1µF capacitors.

Part Context

This part belongs to the ICL3232 family of low-power RS-232 transceivers. It shares functional similarities with the ICL3232CBNZ but differs in packaging and temperature rating specifications. The series is characterized by its ability to maintain EIA/TIA-232 compliance even at lower supply voltages.

Replacement Considerations

Public confirmed substitutes include the MAX3232EIPZ and the HIN232CNZ. These components offer similar pinouts and electrical characteristics for direct integration into existing designs.