ICL3232CV

Overview

The Intersil ICL3232CV is a dual transmitter and dual receiver RS-232 interface integrated circuit designed for operation with supply voltages ranging from 3.0V to 5.5V. It meets EIA/TIA-232 and V.28/V.24 specifications at the minimum 3.0V supply level. The device features on-chip voltage converters that require only four external 0.1µF capacitors, eliminating the need for inductors or transformers. It supports data rates up to 250kbps and includes ±15kV human body model ESD protection on RS-232 I/O pins. The component is latch-up free and operates within a temperature range of 0°C to 70°C.

Feature Summary

• On-chip charge pumps requiring minimal external capacitance
• Low standby power consumption via automatic powerdown
• High electrostatic discharge protection on serial ports

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. Confirm RoHS compliance status as manufacturing processes evolve. Ensure the ordering code matches the required pinout and electrical characteristics for the target design.

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 MAX3232 devices. Verify system voltage compatibility with 3.3V or 5V logic levels before integration.

Part Context

This part belongs to the Intersil ICL32XX family of low-power RS-232 transceivers. The family shares common architecture but varies in driver/receiver counts and power management features. The ICL3232 specifically provides two drivers and two receivers.

Replacement Considerations

Officially documented drop-in replacements include MAX3232, MAX3243, SP3243, HIN232, and ICL232. Verify pin compatibility and electrical parameters when substituting.