ICL3222IB

Overview

The ICL3222IB is a dual transmitter and receiver RS-232 interface integrated circuit manufactured by Intersil. It operates from a single 3V to 5.5V power supply and complies with EIA/TIA-232 and V.28/V.24 specifications. The device features two drivers and two receivers, providing full RS-232 signal levels. It includes an automatic shutdown feature that reduces power consumption when the part is not in use. The component is housed in an 18-pin SOIC-wide package.

Feature Summary

• Dual driver and receiver configuration for complete RS-232 communication
• Single low-voltage power supply operation capability
• Automatic power-down mode for reduced energy usage
• Compliance with standard RS-232 electrical specifications

Applications

• Industrial control systems requiring serial communication
• Portable battery-powered equipment needing low power interfaces
• Modems and data transmission devices

Procurement Notes

Verify the exact suffix against official Renesas/Intersil documentation to confirm pinout and electrical characteristics. Confirm RoHS compliance status as manufacturing processes evolve. Check current lifecycle status since older Intersil parts may be discontinued or replaced by newer equivalents. Ensure the supplier provides valid traceability for critical applications.

Selection Notes

Select this component when a dual-channel RS-232 interface is required with minimal external capacitance. Consider the automatic shutdown feature for battery-operated designs. Verify voltage compatibility with the target system's logic levels. Compare against newer generations like the ISL3232E for improved performance if available.

Part Context

This IC belongs to the ICL3222 family of RS-232 transceivers. Intersil was acquired by Renesas Electronics, which continues to support these legacy interface products. The ICL3222 series is designed for applications requiring reliable serial communication with low power consumption.

Replacement Considerations

Check for ISL3222IB as a direct equivalent. Newer alternatives include ISL3232E or ISL4221E which offer similar functionality with updated manufacturing processes.