ICL3225IA-T

Overview

The Intersil ICL3225IA-T is a dual transmitter and dual receiver RS-232 transceiver designed for low-power applications. It operates within a supply voltage range of 3.0V to 5.5V, ensuring compatibility with single 3.3V and 5.0V systems. The device supports data rates up to 1Mbps and features enhanced automatic powerdown functionality that reduces standby current to 1µA. It includes on-chip voltage converters requiring only four external 0.1µF capacitors. The component provides ±15kV ESD protection and meets EIA/TIA-232 specifications.

Feature Summary

• Enhanced automatic powerdown mechanism significantly reduces standby power consumption
• Integrated charge pumps eliminate the need for external inductors or transformers
• High noise immunity provided by receiver hysteresis characteristics
• Robust electrostatic discharge protection rated at ±15kV via human body model

Applications

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

Procurement Notes

Verify the specific suffix against official documentation, as standard datasheets typically list ICL3225IAZ-T. Confirm RoHS compliance status and package type availability through authorized Renesas or Intersil distributors. Ensure the source document explicitly identifies the 'IA' variant without additional manufacturing codes to avoid substitution errors.

Selection Notes

Select this component when designing portable electronics requiring minimal standby current. It serves as a drop-in replacement for MAX3225 devices. Verify that the system operates within the 3V to 5.5V range and requires full-duplex communication. Check if the 'Ready to Transmit' indicator output is necessary for the specific interface logic.

Part Context

This part belongs to the ICL32XXE family of RS-232 transceivers from Intersil, now part of Renesas Electronics. The family is characterized by low supply current and small footprint packaging. These devices are engineered to meet EIA/TIA-232 standards while supporting modern low-voltage digital interfaces found in mobile computing hardware.

Replacement Considerations

Publicly documented direct drop-in replacements include the Maxim MAX3225. Verify pinout compatibility and electrical parameters before substituting. Other variants within the ICL3225 series may offer different package options or temperature ranges.