ICL3222CAZ

Overview

The ICL3222CAZ is a dual driver, dual receiver RS-232 transceiver manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 500 kb/s. The device features full-duplex communication capability and includes an automatic power-down mode that reduces operating current to approximately 1 mA. It provides 15 kV electrostatic discharge (ESD) protection on all RS-232 lines. The component is housed in a 20-lead SSOP package and is rated for an industrial temperature range from -40 °C to +85 °C.

Feature Summary

• Integrated automatic power-down functionality for significant current reduction during idle periods
• Robust 15 kV ESD protection across all RS-232 signal lines to enhance system reliability
• Single 3 V or 5 V power supply operation eliminating the need for external charge pumps

Applications

• Industrial control systems requiring reliable serial communication
• Portable battery-powered equipment utilizing low-voltage logic interfaces
• Data acquisition modules interfacing with standard RS-232 peripherals

Procurement Notes

Verify the specific suffix 'CAZ' against official Renesas documentation to confirm the exact temperature grade and RoHS compliance status. Ensure the SSOP-20 package variant matches the target PCB footprint requirements. Cross-reference the manufacturer part number directly with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a dual-channel RS-232 interface is required with low standby current consumption. It is suitable for designs needing 15 kV ESD protection without external clamping diodes. Verify that the 500 kb/s data rate meets the application's throughput needs and that the SSOP-20 package fits the available board space constraints.

Part Context

This part belongs to the ICL3222 series of RS-232 transceivers designed for 3 V and 5 V applications. It serves as a bridge between microprocessor logic levels and RS-232 voltage standards. The series typically includes variants with different driver/receiver counts and packaging options to support diverse embedded system architectures.

Replacement Considerations

Direct substitutes include other 3 V/5 V dual RS-232 transceivers with similar pinouts and electrical characteristics. Verify compatibility regarding ESD protection levels and data rate specifications before substitution.