ICL3222EIAZ-T

Overview

The ICL3222EIAZ-T is a CMOS RS-232 transceiver from the ICL32xxE series, manufactured by Renesas Electronics. It features two drivers and two receivers in a full-duplex configuration, housed in a 20-pin SSOP package. The device operates on a single power supply ranging from 3V to 5.5V, with a typical operating current of 1mA. It supports data rates up to 250 kb/s and includes integrated charge pumps requiring only external 0.1µF capacitors. Key electrical parameters include a maximum propagation delay of 0.15µs at specified load conditions, high-level output current of 1.0mA, and low-level output current of 1.6mA. It provides 15kV ESD protection on all pins and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated 15kV human body model ESD protection on all RS-232 lines for enhanced robustness
• Power-down feature significantly reduces standby current consumption
• Single-supply operation compatible with 3V and 5V logic systems
• Internal charge pump eliminates need for external dual-voltage supplies

Applications

• Industrial equipment serial communication interfaces
• Portable battery-powered devices requiring low power consumption
• Embedded systems connecting microcontrollers to RS-232 peripherals
• Data acquisition systems in harsh electromagnetic environments

Procurement Notes

Verify the suffix 'T' indicates tape-and-reel packaging when ordering. Confirm RoHS compliance status through official Renesas documentation or distributor datasheets prior to procurement. Ensure the SSOP-20 footprint matches the target PCB layout. Check for any specific humidity sensitivity level (MSL) requirements during storage and handling procedures as indicated in the manufacturer's specifications.

Selection Notes

Select this component when a dual-driver, dual-receiver RS-232 interface is required with low quiescent current. The 250 kb/s data rate suits most standard asynchronous communication needs. Consider the 15kV ESD rating for applications exposed to static discharge risks. Verify that the 3V to 5.5V supply range aligns with the system's power architecture before finalizing the design choice.

Part Context

This part belongs to the ICL32xxE family of RS-232 transceivers, which are successors to the classic MAXIM/INTERSIL line. The 'E' designation typically denotes enhanced features such as lower power consumption and improved ESD protection compared to earlier generations. Renesas acquired Intersil, retaining these legacy interface products for continued support in industrial and consumer markets.

Replacement Considerations

Direct pin-compatible substitutes may include the ICL3221EIAZ-T or ICL3223EIAZ-T from the same series, depending on driver/receiver count requirements. Cross-reference with Maxim Integrated MAX3222EIDR for equivalent functionality. Verify voltage levels and ESD ratings match application constraints before substitution.