ICL3222CA-T

Overview

The ICL3222CA-T is a low-power RS-232 transceiver designed for operation with supply voltages ranging from 2.7 V to 5.5 V. It integrates two drivers and two receivers, meeting EIA/TIA-232 and V.28/V.24 specifications at 3 V. The device features on-chip voltage converters requiring only four external 0.1 µF capacitors. It includes manual and automatic power-down modes to reduce current consumption. The component offers ESD protection of ±15 kV on I/O pins per IEC61000 standards and is latch-up free.

Feature Summary

• Low power consumption with manual and automatic power-down capabilities
• Integrated charge pumps requiring minimal external capacitance
• High electrostatic discharge protection on communication lines
• Pin-compatible replacement for legacy 5V RS-232 devices

Applications

• Portable battery-powered equipment
• Notebooks and sub-notebooks
• Hand-held terminals and peripherals

Procurement Notes

Verify the suffix 'CA-T' corresponds to the specific temperature range and tape-and-reel packaging configuration required for your assembly process. Confirm that the manufacturer designation aligns with Intersil or Renesas, as Harris Corporation's semiconductor assets were acquired. Ensure the datasheet version matches the production lot date code to guarantee parameter consistency.

Selection Notes

Select this component when upgrading from 5V MAX221E/MAX242E equivalents to lower voltage systems. It is suitable for designs requiring reduced standby current without sacrificing data rate performance up to 250 Kbps. Verify that the 3V operating mode meets the signal integrity requirements of the connected serial port interface.

Part Context

This part belongs to the ICL322x family of low-power RS-232 transceivers. It serves as a direct pin-compatible upgrade for older 5V devices like the MAX242E. The 'T' suffix indicates reel packaging, while 'CA' typically denotes commercial temperature range and ceramic or plastic package variant depending on the specific manufacturing era documentation.

Replacement Considerations

Publicly confirmed drop-in replacements include MAX3222E, MAX242E, and SP312E. These parts share pin compatibility and functional equivalence. Verify voltage level compatibility if replacing in existing 5V-only designs, as the ICL3222CA-T operates down to 2.7V.