ICL3232IA-T

Overview

The ICL3232IA-T is a dual-driver, dual-receiver RS-232 transceiver manufactured by Renesas Electronics Corporation. It operates on a single power supply ranging from +3.0V to +5.5V and meets EIA/TIA-232 and V.28/V.24 specifications even at the minimum voltage of 3.0V. The device features an internal charge pump requiring only four external 0.1µF capacitors. It supports data rates up to 250kbps with a typical slew rate of 6V/µs. The operating supply current is 1mA, reducing to 1µA in shutdown mode. It includes ±15kV ESD protection and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump eliminates the need for external inductors or transformers, simplifying circuit design.
• Automatic power-down feature reduces standby current when no valid RS-232 signals are detected.
• Receiver hysteresis improves noise immunity in electrically noisy environments.
• Robust electrostatic discharge protection ensures reliability during handling and operation.

Applications

• Battery-powered portable devices such as PDAs and laptops
• Modems, printers, and other peripheral equipment
• Digital cameras and cellular/mobile phones

Procurement Notes

Verify the specific suffix 'IA' against the manufacturer's official documentation to confirm package type and temperature grade. Ensure the ordering information matches the exact part number required for your application. Confirm RoHS compliance status through the latest datasheet revision. Cross-reference the manufacturer's part number with distributor listings to avoid counterfeit components.

Selection Notes

Select this component for applications requiring low-power RS-232 communication in space-constrained designs. It is suitable for systems operating exclusively at 3.3V or 5.0V, or mixed-voltage environments. Consider the TSSOP-16 or SOIC-16 package availability based on PCB layout constraints. Verify that the 250kbps data rate meets the system's transmission speed requirements.

Part Context

The ICL3232 series belongs to Renesas' family of low-power RS-232 transceivers derived from Intersil technology. These devices are designed as pin-compatible upgrades for legacy parts like the MAX232. The ICL3232 specifically offers dual drivers and receivers, making it ideal for standard serial port implementations in modern embedded systems.

Replacement Considerations

Publicly confirmed substitute part numbers for ICL3232IA-T are not available in the provided reference material. Consult the manufacturer's official cross-reference guide for verified alternatives.