ICL3221CVZ-T

Overview

The ICL3221CVZ-T is a single driver, single 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 with a propagation delay of 0.3 µs and includes an integrated shutdown function. It provides 15 kV ESD protection on input and output pins. The component is housed in a TSSOP-16 package and functions at temperatures between 0°C and +70°C while consuming 1 mA of operating current.

Feature Summary

• Integrated automatic power-down circuitry that reduces standby current when the RS-232 cable is disconnected or peripheral devices are powered off.
• Robust electrostatic discharge protection rated at ±15 kV on both transmitter outputs and receiver inputs.
• Single-ended receiver signal processing capability designed for standard RS-232 interface compliance.

Applications

• Portable computing devices requiring low-power serial communication interfaces
• Personal digital assistants and handheld computers
• Battery-operated systems utilizing mixed 3.3 V and 5.0 V logic levels

Procurement Notes

Verify the specific suffix 'CVZ-T' against official Renesas documentation to confirm package type and tape-and-reel configuration. Confirm RoHS compliance status and moisture sensitivity level requirements prior to assembly. Ensure the ordering information matches the exact manufacturer part number to avoid functional discrepancies in automated pick-and-place processes.

Selection Notes

Select this component for applications requiring a single-channel RS-232 interface with minimal external capacitor requirements. The automatic shutdown feature makes it suitable for battery-powered portable electronics where standby power consumption is critical. Verify that the required data rate does not exceed 500 kb/s and that the operating environment remains within the specified commercial temperature range.

Part Context

This device belongs to the ICL3221 series of RS-232 transceivers from Renesas Electronics. The series is characterized by its ability to operate efficiently at lower supply voltages while maintaining compatibility with standard RS-232 signaling levels. The CVZ-T designation indicates a specific surface-mount packaging variant optimized for automated manufacturing processes.

Replacement Considerations

Consult official substitution guides for equivalent single-driver RS-232 transceivers with similar pinouts and electrical characteristics. Verify compatibility regarding shutdown functionality and ESD protection ratings before implementing any alternative components in existing designs.