ICL3232CAZ

Overview

The ICL3232CAZ is a dual driver and dual receiver RS-232 transceiver manufactured by Renesas Electronics. It operates from a single 3V to 5.5V power supply, ensuring compliance with EIA/TIA-232 standards at low voltages. The device features an internal charge pump requiring only four external 0.1µF capacitors. It supports data rates up to 250kbps with a minimum slew rate of 6V/µs. Key electrical parameters include a maximum supply voltage of 5.5V, a minimum of 3V, and a typical operating current of 1mA in active mode. It provides ±15kV ESD protection on all lines and functions within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Integrated charge pump eliminates the need for external inductors or multiple voltage supplies.
• Low standby power consumption achieved through automatic shutdown circuitry.
• Robust electrostatic discharge protection ensures reliability in sensitive environments.
• Receiver hysteresis improves noise immunity during signal transmission.

Applications

• Battery-powered portable computers and PDAs
• Modems and peripheral equipment interfaces
• Printers and digital cameras with serial ports

Procurement Notes

Verify the specific suffix 'CAZ' against official Renesas documentation to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for SSOP-16 packages. Confirm RoHS compliance status for the specific manufacturing lot before integration into final assemblies.

Selection Notes

Select this component when designing systems requiring full RS-232 compliance at 3V logic levels. It serves as a direct replacement for legacy ICL232 devices in space-constrained applications. Consider the 250kbps speed limit when evaluating high-speed communication requirements.

Part Context

This part belongs to the ICL3232 family of low-power RS-232 transceivers. It shares functional similarities with the MAX3232 but offers specific pinout and performance characteristics defined by Intersil and Renesas design standards. The CAZ suffix typically denotes a specific tape-and-reel packaging option for automated assembly.

Replacement Considerations

The SN65C3232 and ST3232 are documented alternatives offering similar functionality. Verify pin compatibility and capacitor requirements when substituting these parts to ensure proper system operation without hardware modification.