ICL3222IAZ-T

Overview

The ICL3222IAZ-T is a CMOS RS-232 transceiver from the ICL32xxE series, manufactured by Renesas Electronics. It integrates two drivers and two receivers for bidirectional data communication compliant with EIA/TIA-232 and V.28/V.24 standards. The device operates on a single 3V to 5.5V power supply and features low power consumption with an automatic shutdown mode that reduces current to less than 1µA. It includes internal charge pumps requiring only external 0.1µF capacitors. The component supports data rates up to 120kbps and offers ±15kV ESD protection on RS-232 lines. It is housed in a 16-pin SSOP package.

Feature Summary

• Integrates dual drivers and dual receivers for full RS-232 communication within a single chip
• Features automatic power-down mode to minimize standby current consumption below 1µA
• Provides robust electrostatic discharge protection rated at ±15kV on all RS-232 interfaces
• Utilizes internal charge pump circuitry to generate required voltages from a single supply

Applications

• Industrial equipment serial communication ports
• Medical instrumentation data interfaces
• Portable battery-operated devices requiring low power RS-232 connectivity
• Computer peripheral interface circuits

Procurement Notes

Verify the specific suffix 'IAZ-T' against official Renesas documentation to confirm tape-and-reel packaging and industrial temperature range specifications. Ensure compatibility with existing PCB footprints for the 16-pin SSOP package. Cross-reference the manufacturer part number with current datasheets to validate active status and any recent design changes or obsolescence notices before finalizing procurement plans.

Selection Notes

Select this component when designing systems requiring dual-channel RS-232 transmission and reception under a single 3V to 5.5V supply voltage. It is suitable for applications prioritizing low quiescent current through automatic shutdown capabilities. Consider this part for space-constrained designs due to its compact SSOP packaging and minimal external capacitor requirements compared to older generation transceivers.

Part Context

This device belongs to the ICL32xxE family of low-power RS-232 transceivers originally developed by Intersil and now produced by Renesas Electronics. The family is characterized by CMOS technology enabling operation from a single low-voltage supply. The ICL3222 variant specifically provides two drivers and two receivers, distinguishing it from single-driver or triple-driver counterparts within the same product line.

Replacement Considerations

Official substitutes include the ICL3221EIAZ-T for single-channel applications and the ICL3223EIAZ-T for triple-channel configurations. Verify pinout compatibility and electrical parameters against the latest datasheets before substituting.