ICL3243CV

Overview

The Intersil ICL3243CV is a single-driver, five-receiver RS-232 transceiver designed for low-power applications. It operates within a supply voltage range of 3.0V to 5.5V and supports data rates up to 250kbps. The device features manual and automatic powerdown functions that reduce standby current to approximately 1µA. It includes on-chip charge pumps requiring only four external 0.1µF capacitors. The component provides 15kV ESD protection and meets EIA/TIA-232 specifications at 3V operation.

Feature Summary

• Integrated automatic powerdown functionality reduces standby power consumption significantly
• On-chip voltage converters eliminate the need for external inductors or transformers
• High electrostatic discharge (ESD) protection ensures robust signal integrity
• Compatible with 3.3V and 5.0V logic systems without level shifting

Applications

• Portable personal digital assistants (PDAs)
• Notebook and laptop computer serial interfaces
• Palmtop devices requiring minimal power draw
• Battery-operated industrial communication equipment

Procurement Notes

Verify the suffix 'CV' against official Renesas/Intersil documentation to confirm temperature grade and package variant. Ensure RoHS compliance status matches project requirements. Cross-reference ordering information directly with manufacturer datasheets to avoid discrepancies in pinout or electrical characteristics.

Selection Notes

Select this component when a single driver and multiple receivers are required for RS-232 communication. It is suitable for designs prioritizing low standby current over high-speed data transmission. Consider the SOIC-28 package constraints and ensure adequate board space for the required external capacitors.

Part Context

The ICL3243 belongs to the ICL32XX family of low-power RS-232 transceivers. This series was developed to replace older 5V-only devices with more efficient 3V-compatible alternatives. The ICL3243 specifically addresses applications needing one transmitter and five receivers in a compact footprint.

Replacement Considerations

The ICL3243 serves as a drop-in replacement for MAX3243, SP3243, and similar legacy parts. Verify pin compatibility and electrical parameters before substitution. Ensure the alternative device supports the same 3V operating voltage and data rate requirements.