ICL3241ECA

Overview

The Intersil ICL3241ECA is a full-duplex RS-232 transceiver designed for 3.0V to 5.5V power supplies, ensuring compliance with EIA/TIA-232 and V.28/V.24 standards even at the minimum voltage. It integrates three drivers and five receivers within an SSOP-28 package. The device supports data rates up to 250 kb/s with a propagation delay of 0.15 µs. Operating current is specified at 1 mA, while shutdown mode reduces consumption to 1 µA. It features ±15 kV ESD protection on all RS-232 pins and operates across a commercial temperature range of 0°C to +70°C.

Feature Summary

• Integrated dual charge pump enables true RS-232 performance from low-voltage single supplies without external inductors.
• Includes a dedicated always-on receiver input to support system wake-up functionality from serial port events.
• Provides robust electrostatic discharge protection on transmitter outputs and receiver inputs to safeguard connected peripherals.

Applications

• Notebook and sub-notebook computers requiring complete serial port solutions
• Portable digital assistants (PDAs) and handheld devices
• Battery-powered equipment and palmtop computers

Procurement Notes

Verify the specific suffix against manufacturer documentation to confirm exact packaging configuration and moisture sensitivity level. Ensure the component meets RoHS requirements if applicable to the target assembly process. Cross-reference the ordering part number with official Renesas or Intersil catalogs to validate availability and revision status before finalizing procurement plans.

Selection Notes

Select this component when a full RS-232 interface is required in space-constrained portable designs. It is suitable for systems operating between 3.0V and 5.5V that need low standby power. The inclusion of an always-active receiver makes it ideal for applications requiring remote wake-up capabilities via serial communication lines.

Part Context

This device belongs to the ICL324xE series of low-power RS-232 transceivers. It shares architectural similarities with other members like the ICL3241EIVZ but differs in package type and operational temperature specifications. The series is characterized by its ability to maintain standard RS-232 signal levels using small external capacitors and efficient charge pumps.

Replacement Considerations

The ST3241EB serves as a functional substitute offering similar driver/receiver counts and auto power-down features. Verify pin compatibility and thermal characteristics when substituting, as package dimensions and operating temperature ranges may differ between manufacturers.