ICL3232ECBZ-T

Overview

The ICL3232ECBZ-T is a dual RS-232 transceiver manufactured by Renesas Electronics Corporation, designed for operation within a single +3V to +5.5V power supply range. It features two drivers and two receivers, ensuring compliance with EIA/TIA-232 and V.28/V.24 specifications even at the minimum 3.0V supply voltage. The device incorporates an efficient on-chip charge pump requiring only four external 0.1µF capacitors. Key electrical parameters include a guaranteed data rate of 250kbps, a minimum slew rate of 6V/µs, and a standby supply current reduced to 1µA via automatic power-down functionality. It operates across a temperature range of -40°C to +85°C and provides ±15kV ESD protection.

Feature Summary

• Automatic power-down function reduces standby current to 1µA when peripherals are off or cables are disconnected
• On-chip charge pump requires only four small 0.1µF external capacitors for operation
• Provides ±15kV ESD protection on all pins for enhanced robustness
• Maintains full RS-232 compliance at low 3.0V supply voltages

Applications

• Battery-powered handheld devices and PDAs
• Notebook and laptop computers
• Portable communication equipment
• Modems and printers

Procurement Notes

Verify the specific suffix 'ECBZ' against the manufacturer's official datasheet to confirm package type and temperature grade. Ensure the ordering part number matches the exact RoHS status and tape-and-reel quantity specified in the latest Renesas documentation before finalizing procurement.

Selection Notes

Select this component for designs requiring low-power RS-232 connectivity in space-constrained portable applications. It serves as a direct replacement for legacy Intersil parts and offers pin compatibility with certain competitor devices while providing superior power efficiency through its automatic shutdown feature.

Part Context

This part belongs to the ISL32xx family of RS-232 transmitters and receivers. The family includes variants like ICL3221, ICL3222, ICL3241, and ICL3243, which share similar electrical characteristics but differ in the number of drivers and receivers. The ICL3232 specifically provides a balanced 2-driver, 2-receiver configuration suitable for standard serial port implementations.

Replacement Considerations

ICL3232IVZ-T7A

FAQ

Does the ICL3232ECBZ-T support automatic power-down?

Yes, the ICL3232E series includes an automatic power-down function that powers off the on-chip charge pump and driver circuits when no valid RS-232 signal is detected, reducing standby current to 1µA.

What is the minimum supply voltage for this device?

The device operates from a single +3.0V to +5.5V supply and meets EIA/TIA-232 specifications down to 3.0V.