ICL3241CAZ

Overview

The ICL3241CAZ is a low-power RS-232 transceiver manufactured by Renesas Electronics, designed for portable applications. It integrates three drivers and five receivers within a single package, providing a complete serial port solution. The device operates on a single 3.0V to 5.5V supply voltage while maintaining compliance with EIA/TIA-232 and V.28/V.24 standards. It features an internal dual charge pump requiring only small external capacitors. Key electrical parameters include a guaranteed data rate of 250kbps, ±15kV electrostatic discharge (ESD) protection on all RS-232 pins, and a shutdown mode reducing supply current to 1µA. The component is housed in a 28-pin SSOP package.

Feature Summary

• Integrates three drivers and five receivers for full serial port functionality
• Provides ±15kV ESD protection on transmitter outputs and receiver inputs
• Includes automatic power-down circuitry to minimize standby current consumption
• Features always-on receiver R2 to support system wake-up capabilities

Applications

• Notebook and sub-notebook computers
• Personal Digital Assistants (PDAs)
• Handheld and battery-powered equipment
• Portable peripherals and printers

Procurement Notes

Verify the specific suffix 'CAZ' against official Renesas documentation to confirm the SSOP-28 package type and commercial temperature range specifications. Ensure compatibility with required PCB footprint dimensions and moisture sensitivity levels before procurement. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current production status.

Selection Notes

Select this component when a compact RS-232 interface is required for 3V to 5V systems. It is suitable for designs needing multiple transmit and receive lines in a limited space. Consider the automatic power-down feature for battery-operated devices requiring extended standby life. Verify that the 250kbps data rate meets the application's communication speed requirements.

Part Context

This device belongs to the Intersil ICL32xxE series of low-power RS-232 transceivers. The series is characterized by its ability to operate at lower voltages compared to traditional RS-232 chips. The ICL3241 variant specifically provides the driver and receiver counts necessary for standard PC serial ports. Renesas acquired the Intersil product line, continuing support for these established interface components.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.