ICL3222IAZ

Overview

The ICL3222IAZ is a CMOS RS-232 transceiver from the ICL3222 series, manufactured by Renesas Electronics. It features two drivers and two receivers for full-duplex communication with a data rate of 500 kb/s. Operating on a single 3 V to 5.5 V supply, it includes integrated charge pumps and supports 1 mA quiescent current. The device offers 15 kV ESD protection and operates within a temperature range of -40°C to +85°C. Packaged in SSOP-20, it complies with RS-232 standards.

Feature Summary

• Integrated charge pump eliminates external capacitor requirements
• High electrostatic discharge (ESD) protection up to 15 kV
• Low power consumption with 1 mA typical operating current
• Single-supply operation compatible with 3.3 V and 5 V logic

Applications

• Industrial control systems requiring serial communication
• Portable battery-powered devices due to low power profile
• Data acquisition systems interfacing with PC or terminal equipment
• Embedded systems needing robust ESD-resistant RS-232 links

Procurement Notes

Verify the exact suffix 'IAZ' against the manufacturer's official datasheet to confirm package type, temperature grade, and RoHS compliance status. Ensure the ordering code matches the specific revision required for your design. Cross-reference with authorized distributors to confirm current availability and authenticity, as component markings may vary slightly between manufacturing lots.

Selection Notes

Select this component when a dual-driver, dual-receiver RS-232 interface is needed with high ESD tolerance. It is suitable for designs requiring operation from a single 3 V to 5.5 V supply without external charge pump capacitors. Consider the SSOP-20 package constraints and the -40°C to +85°C industrial temperature range during PCB layout and thermal management planning.

Part Context

This part belongs to the ICL3222 family of RS-232 transceivers, which are CMOS versions of the classic MAXIM MAX3222. Renesas acquired Intersil, the original developer, maintaining the lineage. The ICL3222 series provides a drop-in replacement for legacy designs while offering improved ESD performance and lower power consumption compared to older bipolar counterparts.

Replacement Considerations

Direct pin-compatible substitutes include the MAX3222EIDR from Analog Devices and the SP3232EEN from MaxLinear. Verify that alternative parts match the 500 kb/s data rate and 15 kV ESD rating. Check if the replacement supports the same SSOP-20 package and industrial temperature range (-40°C to +85°C) for seamless integration.