ICL3227IA

Overview

The ICL3227IA is a single driver and single receiver RS-232 transceiver manufactured by Intersil, now part of Renesas Electronics. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 1 Mb/s. The device features full-duplex communication capability and includes an integrated shutdown function for power management. It provides 15 kV ESD protection on the RS-232 lines. The component is housed in a 16-pin SSOP package and is designed for surface mount installation. Operating temperatures range from 0°C to +70°C with a typical supply current of 1 mA.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external capacitors in some configurations, though standard designs typically utilize small external capacitors.
• Automatic powerdown feature reduces standby current significantly when no valid RS-232 signal is present at the receiver inputs.
• Robust electrostatic discharge protection ensures reliability in environments susceptible to static events.

Applications

• Portable computing devices such as PDAs and palmtops requiring low power consumption.
• Industrial control systems utilizing serial communication interfaces.
• Notebook and laptop computer peripheral connections.

Procurement Notes

Verify the specific suffix 'IA' against official Renesas documentation to confirm temperature grade and packaging details. Confirm end-of-life status as distribution channels may list obsolete inventory. Ensure compatibility with existing board layouts regarding the SSOP-16 footprint and capacitor requirements before procurement.

Selection Notes

Select this component for applications requiring a single channel of RS-232 communication with moderate speed requirements. Compare against the ICL3221 series if lower data rates are sufficient or if automotive temperature ranges are required. Verify that the 1 Mb/s rate meets system timing constraints and that the 3 V minimum supply voltage aligns with the target platform's power rails.

Part Context

This component belongs to the ICL3227E family of low-power RS-232 transceivers. It shares architectural similarities with other members like the ICL3221 and ICL3223 but differs in pinout and specific electrical characteristics. The 'ICL' prefix denotes Intersil legacy branding, now managed under Renesas Electronics interface product lines.

Replacement Considerations

Publicly confirmed substitutes include the ISL3227ECAZA and ICL3227ECAZA. These variants maintain functional compatibility while potentially offering updated manufacturing processes or RoHS compliance. Verify pin-to-pin compatibility and electrical specifications before substitution.