ICL3232EIAZ

Overview

The ICL3232EIAZ is a dual driver/receiver RS-232 transceiver manufactured by Renesas Electronics. It operates on a single +3V to +5.5V supply and meets EIA/TIA-232 and V.28/V.24 specifications at low voltages. The device features ±15kV ESD protection, a data rate of 250kbps, and an operating supply current of 1mA. It utilizes a 16-pin SSOP package with full-duplex communication capability. Key electrical parameters include a maximum output current of 35mA, a propagation delay of 150ns, and an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrated charge pumps enable operation from a single power supply without external voltage inversion components.
• Provides robust electrostatic discharge protection rated at ±15kV for both human body model and IEC61000-4-2 air gap standards.
• Maintains compliance with EIA/TIA-232 interface specifications even when powered by a minimum of 3.0V.
• Designed for low-power applications with an operational supply current of approximately 1mA.

Applications

• Portable computing devices such as PDAs and palmtops requiring low standby power.
• ISDN terminal adaptors and peripheral interfaces.
• Notebook and laptop computer serial port implementations.
• Industrial control systems utilizing RS-232 communication protocols.

Procurement Notes

Verify the specific suffix 'IAZ' against the manufacturer's official ordering guide to confirm pinout compatibility and RoHS status. Ensure the SSOP-16 package dimensions match the target PCB footprint. Confirm moisture sensitivity level requirements for reflow soldering processes prior to procurement.

Selection Notes

Select this component for designs requiring dual-channel RS-232 communication within a compact surface-mount footprint. It is suitable for systems needing ±15kV ESD tolerance on serial lines. Verify that the 250kbps data rate satisfies the application's throughput requirements. Consider the 16-pin SSOP package constraints during layout planning.

Part Context

This part belongs to the ICL32XXE family of 3V RS-232 transceivers. It shares functional similarities with the ICL3232EIV-16Z-T but differs in packaging. The ICL3232 series provides a cost-effective solution for replacing older 5V-only RS-232 drivers in modern low-voltage digital systems.

Replacement Considerations

ICL3232EIV-16Z-T offers identical electrical performance in a TSSOP-16 package. Check pin-to-pin compatibility between SSOP and TSSOP footprints before substitution. Other family members like ICL3221E or ICL3241E provide different channel counts and are not direct replacements.