ICL3227ECA

Overview

The ICL3227ECA is a single driver, single receiver RS-232 transceiver from the ICL32XXE series, manufactured by Intersil (Renesas). It operates on a supply voltage range of 3.0 V to 5.5 V and supports data rates up to 1 Mb/s. The device features full-duplex communication with an output current capability of 35 mA and propagation delay of 150 ns. It includes enhanced automatic powerdown functionality, reducing operating supply current to 1 mA in active mode. The component provides ±15 kV ESD protection on RS-232 pins and is housed in an SSOP-16 package suitable for surface mount installation.

Feature Summary

• Integrated charge pumps enable operation from a single 3V to 5.5V supply without external voltage inversion components.
• Automatic powerdown circuit reduces standby current to 1 µA when no valid RS-232 signal is detected on receiver inputs.
• Robust electrostatic discharge protection rated at ±15 kV on all RS-232 I/O pins per IEC61000-4-2 standards.

Applications

• Portable computing devices such as PDAs and palmtops requiring low power consumption.
• ISDN terminal adaptors and peripheral interfaces.
• Notebook and laptop computer serial communication ports.

Procurement Notes

Verify the specific suffix 'ZA' against the official datasheet to confirm pinout compatibility and RoHS status. Confirm end-of-life status with the manufacturer prior to design-in, as discontinuation notices may apply to this family. Ensure moisture sensitivity level handling protocols are followed during assembly.

Selection Notes

Select this component for applications requiring minimal board space and low quiescent current. Verify that the 1 Mbps data rate meets system requirements. Ensure the SSOP-16 package footprint aligns with the PCB layout constraints. Compare against similar ICL32XXE variants if higher driver/receiver counts are needed.

Part Context

This part belongs to the ICL32XXE family of low-power RS-232 transceivers designed for 3V systems. It serves as a direct replacement for legacy 5V-only RS-232 drivers like the MAX207E or HIN207E, offering improved power efficiency while maintaining compatibility with EIA/TIA-232 specifications.

Replacement Considerations

Direct functional equivalents within the same family include ICL3227ECAZ. Cross-family replacements such as MAX3222 or SP3232 require verification of pinout compatibility and capacitor values due to differences in internal charge pump architectures.