ICL3222CV

Overview

The Intersil ICL3222CV is a dual-driver, dual-receiver RS-232 transceiver designed for low-power applications. It operates from a single +3V to +5.5V supply and meets EIA/TIA-232 specifications at voltages as low as 3.0V. The device features on-chip voltage converters requiring only four external 0.1µF capacitors. It supports data rates up to 250kbps and includes manual and automatic powerdown functions to reduce standby current to 1µA. The component offers ±15kV ESD protection and is available in SSOP-20 and TSSOP-20 packages.

Feature Summary

• Integrated charge pumps with minimal external capacitor requirements
• Automatic powerdown functionality for extended battery life
• High electrostatic discharge immunity
• Full duplex communication capability

Applications

• Personal Digital Assistants (PDAs)
• Palmtop computers
• Notebook and laptop systems

Procurement Notes

Verify the specific suffix against manufacturer documentation to confirm package type and temperature range. Ensure RoHS compliance status matches project requirements. Confirm pinout compatibility if replacing legacy components like the MAX3222. Validate that the operating voltage range aligns with the target system's power rails.

Selection Notes

Select this component for designs requiring low quiescent current and small board space. It serves as a drop-in replacement for several legacy 5V RS-232 drivers. Consider the ICL3222E variant if enhanced automatic powerdown features are required. Verify capacitor values and placement to ensure stable voltage conversion performance.

Part Context

This part belongs to the ICL32XX family of RS-232 transceivers developed by Intersil, now part of Renesas. The family targets portable electronics where power efficiency is critical. It provides a modern alternative to older 5V-only devices while maintaining compatibility with standard RS-232 signaling levels.

Replacement Considerations

Publicly documented drop-in replacements include the MAX3221, MAX3222, MAX3223, MAX3232, MAX3241, MAX3243, SP3243, HIN232, and ICL232.