ICL3232CP

Overview

The ICL3232CP is a dual transmitter and dual receiver RS-232 line transceiver manufactured by Intersil. It operates from a single power supply ranging from 3V to 5.5V, ensuring compatibility with both 3.3V and 5V logic systems. The device integrates an on-chip voltage converter requiring only four external 0.1µF capacitors. It supports data rates up to 250kbps and features Schmitt trigger inputs for noise immunity. The component provides full duplex communication and includes low standby current capabilities.

Feature Summary

• Integrates on-chip charge pump voltage converters requiring minimal external capacitance
• Provides EIA/TIA-232 and V.28/V.24 compliance across wide supply voltages
• Features Schmitt trigger receivers to enhance noise immunity
• Supports automatic power-down mode to minimize standby current consumption

Applications

• Battery-powered portable devices such as PDAs and laptops
• Modems and peripheral equipment connections
• Industrial control systems requiring RS-232 serial ports
• Handheld terminals and cellular telephones

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and temperature range. Ensure RoHS compliance status matches project requirements. Confirm availability through authorized Renesas or Intersil distributors. Validate pinout compatibility if replacing legacy components. Check moisture sensitivity levels for surface mount assembly processes.

Selection Notes

Select this component when designing systems requiring dual-channel RS-232 communication with low power constraints. It is suitable for applications needing operation at 3.3V logic levels without additional level shifters. Consider the SSOP or SOIC package options based on board space limitations. Verify that the 250kbps data rate meets the system's throughput requirements.

Part Context

The ICL3232 belongs to the Intersil RS-232 transceiver family designed for low-power applications. It serves as a drop-in replacement for older CMOS RS-232 drivers while offering improved efficiency. The series is widely used in portable electronics where battery life is critical. Intersil, now part of Renesas Electronics, maintains this product line for industrial and consumer markets.

Replacement Considerations

The MAX3232 is a common functional substitute. Verify pin compatibility and capacitor requirements before substitution. Ensure the alternative device supports the same 3V to 5.5V operating range.