ICL3225IA

Overview

The Intersil ICL3225IA is a single RS-232 transceiver designed for operation within a +3.0V to +5.5V supply voltage range. It features one driver and two receivers, supporting data rates up to 1Mbps while meeting EIA/TIA-232 and V.28/V.24 specifications at the lower voltage limit. The device incorporates on-chip voltage converters requiring only four external 0.1µF capacitors. Key electrical parameters include a maximum supply current of 1mA in active mode and 1µA in powerdown state. It provides ±15kV ESD protection (Human Body Model) and operates across commercial temperature ranges.

Feature Summary

• Enhanced automatic powerdown functionality reduces standby power consumption significantly
• Integrated charge pumps eliminate the need for external inductors or transformers
• Receiver hysteresis improves noise immunity in electrically noisy environments
• Compatible with 3.3V, 5.0V, and mixed voltage systems

Applications

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

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and temperature grade. Ensure compatibility with existing board layouts regarding capacitor values and pin configurations when replacing legacy components. Confirm RoHS compliance status if required by manufacturing standards.

Selection Notes

Select this component for applications requiring low standby current and minimal external component count. It serves as a drop-in replacement for similar industry-standard parts like the MAX3225. Consider the PDIP-20 or SSOP-20 package options based on available board space and mounting requirements.

Part Context

This part belongs to the ICL32XXE family of RS-232 transceivers manufactured by Intersil, now part of Renesas Electronics. The family shares common architectural features such as enhanced powerdown modes and robust ESD protection, tailored for portable electronics where battery life is critical.

Replacement Considerations

The datasheet identifies the ICL3225IA as a drop-in replacement for the Maxim MAX3225. Verify pinout compatibility and electrical specifications before substitution.