ICL3221EIVZ

Overview

The ICL3221EIVZ is a single-driver, single-receiver RS-232 transceiver manufactured by Renesas Electronics. It operates within a supply voltage range of 3 V to 5.5 V and supports full-duplex communication at data rates up to 250 kb/s. The device features ±15 kV electrostatic discharge (ESD) protection on all RS-232 pins. It incorporates automatic power-down functionality to minimize standby current when the cable is disconnected. The component is housed in a 16-pin TSSOP package and is rated for an industrial operating temperature range from -40 °C to +85 °C.

Feature Summary

• Integrated automatic power-down circuitry that reduces supply current when the RS-232 cable is disconnected or peripheral devices are inactive.
• Robust ±15 kV ESD protection on driver outputs and receiver inputs, ensuring reliability against electrostatic discharge events.
• Single-ended output configuration compatible with standard RS-232 signaling requirements for portable applications.

Applications

• Personal Digital Assistants (PDAs)
• Laptop computers
• Portable computing devices

Procurement Notes

Verify the specific suffix 'IVZ' corresponds to the TSSOP-16 package and industrial temperature grade (-40°C to +85°C). Confirm RoHS compliance status through official manufacturer documentation. Ensure the ordering part number matches the exact pinout and electrical specifications required for the target design.

Selection Notes

Select this component for designs requiring low-power RS-232 connectivity in space-constrained portable electronics. The automatic power-down feature makes it suitable for battery-operated systems where standby current reduction is critical. Verify that the 250 kb/s data rate meets the application's throughput requirements.

Part Context

This device belongs to the ICL322xE series of low-power RS-232 transceivers. It shares architectural similarities with other members like the ICL3223E but differs in configuration and specific feature sets such as the presence of automatic power-down. The series targets mobile and handheld markets requiring efficient power management.

Replacement Considerations

Direct substitutes include other ICL322xE variants with matching driver/receiver counts and package types. Verify compatibility regarding the automatic power-down function and ESD protection levels before substitution.