ICL3241EIR

Overview

The Intersil ICL3241EIR is a low-power RS-232 transceiver designed for portable applications. It operates on a single 3.0V to 5.5V supply and meets EIA/TIA-232 and V.28/V.24 specifications at voltages as low as 3.0V. The device integrates three drivers and five receivers, providing a complete serial port solution. It features ±15kV electrostatic discharge (ESD) protection on all RS-232 pins. The internal charge pump allows operation with small external capacitors. Data rates are guaranteed up to 250kbps under worst-case load conditions.

Feature Summary

• Integrated three drivers and five receivers for full serial port functionality
• Automatic power-down mode reduces standby current to microampere levels
• Enhanced ESD protection on RS-232 input and output pins
• Single-supply operation compatible with 3.3V and 5.0V systems

Applications

• Personal Digital Assistants (PDAs)
• Laptop and notebook computers
• Portable battery-powered equipment
• Handheld devices requiring serial communication

Procurement Notes

Verify the specific suffix against manufacturer documentation to confirm package type and temperature range. Ensure the component matches the required RoHS compliance status if applicable. Cross-reference the ordering code with official Renesas or Intersil catalogs to avoid counterfeit parts. Confirm availability of technical datasheets for integration purposes.

Selection Notes

Select this component when a complete RS-232 interface is needed in space-constrained designs. It is suitable for systems requiring low standby power due to its automatic shutdown feature. Verify that the operating voltage range aligns with the system's power supply. Consider the pin count and package dimensions for PCB layout compatibility.

Part Context

This part belongs to the ICL32xE series of low-power RS-232 transceivers from Intersil, now part of Renesas Electronics. The series is characterized by its ability to operate from a single low-voltage supply while maintaining standard RS-232 signal levels. These devices are widely used in mobile computing and portable electronics where power efficiency and board space are critical constraints.

Replacement Considerations

Compatible substitutes include the ISL4241E series and ST3241E. Verify pinout compatibility and electrical specifications before substitution. Ensure the replacement supports the same data rate and ESD protection levels.