ICL3243CA-T

Overview

The ICL3243CA-T is a full-duplex RS-232 transceiver manufactured by Intersil, operating within a supply voltage range of 3.0V to 5.5V. It integrates three drivers and five receivers, supporting data rates up to 250kbps while consuming only 1µA in power-down mode. The device features on-chip charge pumps requiring four external 0.1µF capacitors and includes automatic powerdown functionality. It provides 15kV ESD protection and meets EIA/TIA-232 specifications at 3V operation.

Feature Summary

• Integrates manual and automatic powerdown functions to minimize standby current consumption
• Includes on-chip voltage converters that require only four small external capacitors
• Provides enhanced electrostatic discharge protection rated at 15kV via human body model

Applications

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

Procurement Notes

Verify the specific suffix 'CA-T' against official Renesas or Intersil documentation to confirm package type and temperature grade. Ensure compatibility with existing board layouts regarding capacitor placement and pin assignments before procurement.

Selection Notes

Select this component for designs requiring low-power RS-232 communication in portable electronics. It serves as a drop-in replacement for legacy MAX3243 devices. Confirm that the 250kbps speed meets application requirements and that the SSOP-28 package fits the mechanical constraints.

Part Context

This part belongs to the ICL32XX family of low-power RS-232 transceivers designed for battery-operated equipment. The series emphasizes reduced standby power through efficient charge pump technology and automatic shutdown features, targeting mobile computing platforms.

Replacement Considerations

The datasheet identifies this device as a drop-in replacement for MAX3243, SP3243, and similar legacy parts. Verify pinout compatibility and electrical parameters against the original design specifications when substituting.