ICL3232CB

Overview

The ICL3232CB is a low-power RS-232 transceiver manufactured by Renesas Electronics Corporation. It operates on a single +3V to +5.5V power supply and meets EIA/TIA-232 and V.28/V.24 specifications even at the minimum voltage of 3.0V. The device integrates three drivers and five receivers, featuring an efficient on-chip charge pump that requires only four external 0.1µF capacitors. It guarantees a data rate of 250kbps with a minimum slew rate of 6V/µs. The part includes ±15kV ESD protection and offers a shutdown current of 1µA for battery-powered applications.

Feature Summary

• Integrates three drivers and five receivers for complete serial port functionality
• Features automatic power-down mode triggered by cable removal or peripheral shutdown
• Includes non-inverting always-active receiver for system wake-up capabilities
• Provides ±15kV ESD protection on all inputs and outputs

Applications

• Personal Digital Assistants (PDAs) and portable computers
• Battery-powered handheld and subnotebook devices
• Modems, printers, and other peripheral equipment
• Digital cameras and cellular/mobile phones

Procurement Notes

Verify the specific suffix against the datasheet to confirm package type and temperature range. Ensure the ordering code matches the required RoHS compliance status. Confirm availability of the TSSOP-16 or SOIC-16 package variant as needed for the design. Check for any specific manufacturing date codes if long-term supply continuity is critical.

Selection Notes

Select this component when a full RS-232 interface is required in a space-constrained design. It is suitable for systems needing multiple receive lines and driver outputs. Consider the 1µA shutdown current for strict standby power requirements. Verify that the 250kbps data rate meets the application's communication speed needs.

Part Context

This device belongs to the ICL3232E series of RS-232 transceivers designed for 3.0V to 5.5V operation. It serves as a low-power alternative to legacy 5V-only interfaces. The series is optimized for portable electronics where board space and battery life are primary constraints. It maintains compatibility with standard RS-232 protocols while reducing external component count.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.