ICL3241IV

Overview

The Intersil ICL3241IV is a low-power RS-232 transceiver designed for portable applications. It operates on a single 3.0V to 5.5V supply and includes three drivers and five receivers, meeting EIA/TIA-232 and V.28/V.24 standards. The device features an internal charge pump requiring only 0.1µF external capacitors. It provides ±15kV ESD protection on all RS-232 pins per IEC61000-4-2. Data rates exceed 250kbps under worst-case loading. The part supports manual shutdown modes to reduce standby current to 1µA.

Feature Summary

• Integrated charge pump enables operation with minimal external capacitance
• High electrostatic discharge immunity on signal lines
• Low power consumption with dedicated shutdown functionality

Applications

• Personal digital assistants (PDAs)
• Laptop computers
• Portable computing devices

Procurement Notes

Verify the package type matches the specific suffix requirements for the target application. Confirm that the manufacturer designation aligns with current Renesas Electronics documentation, as Intersil branding may appear on legacy stock. Ensure the component meets the required temperature range specifications for the intended environment.

Selection Notes

Select this component when a full serial port interface is needed in space-constrained designs. The combination of three drivers and five receivers supports standard modem control signals. Verify compatibility with 3.3V and 5.0V logic systems. Consider the TSSOP or SSOP package options based on board layout constraints.

Part Context

This device belongs to the ICL32xE series of RS-232 transceivers. The series is characterized by its ability to function at lower voltages while maintaining standard compliance. The ICL3241 variant specifically offers a higher receiver count compared to dual-driver counterparts, making it suitable for complex peripheral connections in mobile hardware.

Replacement Considerations

Check for ICL3241E variants with different suffixes indicating package changes. Verify if newer Renesas-branded equivalents maintain identical pinouts and electrical characteristics. Confirm that any substitute supports the same 250kbps data rate and ESD protection levels.