ICL3225IAZ-T

Overview

The ICL3225IAZ-T is a CMOS RS-232 transceiver from the ICL32xxE series, manufactured by Renesas Electronics. It operates on a single power supply ranging from 3V to 5.5V and supports full-duplex communication with two drivers and two receivers. The device features an SSOP-20 package and meets EIA/TIA-232 and V.28/V.24 specifications at 3V. Key electrical parameters include a maximum propagation delay of 0.15μs, a data rate up to 1Mbps, and ±15kV ESD protection. It functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pumps requiring only four external 0.1µF capacitors for voltage conversion
• Enhanced automatic powerdown functionality reducing standby current to 1µA
• Built-in receiver hysteresis to improve noise immunity
• Dedicated 'Ready to Transmit' indicator output

Applications

• Personal Digital Assistants (PDAs)
• Palmtop computers
• Notebook and laptop systems

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for SSOP-20 packages. Confirm RoHS compliance status if required by local regulations. Check moisture sensitivity levels for proper storage handling.

Selection Notes

Select this component when low power consumption is critical in portable devices. It serves as a drop-in replacement for MAX3225 and MAX3245 equivalents. Verify that the 1Mbps data rate meets system requirements. Ensure the 3V to 5.5V supply range aligns with the target platform's voltage rails.

Part Context

This part belongs to the ICL32xxE family of RS-232 interface ICs designed for low-voltage operation. It integrates transmitter and receiver circuits with on-chip voltage converters. The series targets applications where board space and power efficiency are primary design constraints.

Replacement Considerations

ICL3225EIAZ-T is a verified alternative within the same manufacturer lineup.