ICL3221ECVZ-T

Overview

The ICL3221ECVZ-T is a single driver and receiver RS-232 transceiver manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 3 V to 5.5 V, supporting both 3.3 V and 5 V logic systems. The device achieves data rates up to 250 kbps with full duplex communication capability. It features 15 kV auto-down ESD protection on all RS-232 lines and includes automatic power-down functionality to reduce current consumption during idle periods. The component is housed in a 16-TSSOP surface-mount package and is rated for operation between 0°C and +70°C.

Feature Summary

• Integrated 15 kV auto-down electrostatic discharge protection across all RS-232 signal lines
• Automatic power-down mode significantly reduces quiescent current during non-active states
• Single-ended receiver design with specified hysteresis for noise immunity

Applications

• Portable battery-powered equipment requiring low standby current
• Industrial control systems utilizing RS-232 serial communication
• Embedded devices interfacing microcontrollers with legacy serial peripherals

Procurement Notes

Verify the specific suffix 'ECVZ-T' against official Renesas documentation to confirm the tape-and-reel packaging format and commercial temperature grade. Ensure compatibility with RoHS3 standards as indicated in distributor records. Cross-reference the manufacturer part number with the DigiKey designation ICL3221ECVZ-TTR-ND for accurate sourcing channels.

Selection Notes

Select this component when a single channel of RS-232 communication is required alongside strict low-power constraints. The automatic power-down feature distinguishes it from standard variants lacking this function. Confirm that the 250 kbps data rate meets system requirements, as higher-speed alternatives exist within the broader ICL32xxE family.

Part Context

This part belongs to the ICL3221 series of RS-232 transceivers designed for 3V to 5.5V applications. It serves as a bridge between TTL/CMOS logic levels and RS-232 voltage swings. The 'E' designation typically indicates enhanced features such as ESD protection and power-down modes compared to earlier generations.

Replacement Considerations

ICL3221CVZ is a pin-compatible variant available in tube packaging without the trailing 'T'. Verify if the specific power-down or ESD specifications match exactly before substitution.