ICL3222EIA-T

Overview

The ICL3222EIA-T is a CMOS RS-232 transceiver from the ICL32xxE series, manufactured by Renesas Electronics. It operates on a single power supply ranging from 3V to 5.5V and provides two drivers and two receivers for full-duplex communication. The device meets EIA/TIA-232 and V.28/V.24 specifications at 3V operation. Key electrical parameters include a maximum propagation delay of 0.15μs, a minimum high-level output current of 1.0mA, and a maximum low-level output current of 1.6mA. It features ±15kV ESD protection on RS-232 pins and supports data rates greater than 250kbps. The component is housed in a 16-pin SSOP package with an operating temperature range of -40°C to 125°C.

Feature Summary

• Integrated manual and automatic power-down functions reduce standby supply current to approximately 1µA.
• On-chip voltage converters require only four external 0.1µF capacitors, minimizing board space.
• Provides ±15kV ESD protection on transmitter outputs and receiver inputs per IEC61000-4-2 standards.

Applications

• Portable devices such as PDAs and Palmtops requiring low power consumption.
• Notebook and laptop computers utilizing RS-232 serial interfaces.
• Industrial control systems operating in mixed 3.3V and 5.0V logic environments.

Procurement Notes

Verify the specific suffix 'IA' against official Renesas documentation to confirm pinout compatibility and package dimensions. Ensure the ordering code matches the exact tape-and-reel quantity specified in the manufacturer's datasheet. Cross-reference the RoHS compliance status and moisture sensitivity level (MSL) requirements prior to procurement to ensure storage and handling protocols are met.

Selection Notes

Select this component when designing for 3V to 5.5V single-supply systems requiring RS-232 connectivity. It serves as a drop-in replacement for older MAX3222E and SP312E devices. Consider its low standby current and small footprint for battery-operated applications. Verify that the required data rate exceeds 250kbps under worst-case load conditions before finalizing the design.

Part Context

This part belongs to the ICL32xxE family of low-power RS-232 transceivers. It is functionally similar to the ICL3222EIVZ-T but differs in package type and potentially thermal characteristics. The ICL3222E variant is designed as a low-power upgrade for legacy 5V MAX242E and SP312E components, offering improved efficiency while maintaining interface compatibility.

Replacement Considerations

Publicly confirmed direct substitutes include the MAX3222E, SP312E, and HIN232E. These components offer pin-compatible alternatives for existing designs. Verify that the substitute device supports the same 3V operating voltage and ESD protection levels to ensure functional equivalence in the target application.