ICL3241EIV

Overview

The Intersil ICL3241EIV is a low-power RS-232 transceiver designed for portable applications. It integrates three drivers and five receivers, providing a complete serial port solution within a TSSOP-28 package. The device operates on a single 3.0V to 5.5V supply and meets EIA/TIA-232 and V.28/V.24 specifications at the minimum voltage. It supports data rates up to 250kbps with a typical propagation delay of 0.15µs. The component features ±15kV ESD protection on all RS-232 pins and includes an automatic power-down mode that reduces standby current to 1µA.

Feature Summary

• Integrates three drivers and five receivers for full serial port functionality
• Provides ±15kV electrostatic discharge protection on RS-232 input and output pins
• Features automatic power-down circuitry to minimize standby power consumption
• Includes always-on receiver inputs to support wake-up capabilities

Applications

• Notebook and laptop computers
• Personal digital assistants (PDAs)
• Palmtop computers
• Battery-powered handheld equipment

Procurement Notes

Verify the specific suffix against manufacturer documentation to confirm package type and temperature range. Ensure the ordering code matches the required RoHS compliance status and tape-and-reel or tube packaging format. Cross-reference the part number with official Renesas or Intersil catalogs to validate availability and revision history before procurement.

Selection Notes

Select this component when a complete RS-232 interface is required in space-constrained portable devices. It is suitable for systems operating between 3.0V and 5.5V where low standby power is critical. Consider the TSSOP-28 footprint and external capacitor requirements during PCB layout. Verify compatibility with host system logic levels and ensure adequate decoupling for the internal charge pump.

Part Context

The ICL3241EIV belongs to the Intersil ICL32xE series of low-power RS-232 transceivers. This family is engineered to replace older 5V-only devices in modern 3.3V and mixed-voltage environments. The series emphasizes reduced power consumption through efficient charge pumps and automatic shutdown features, making it ideal for battery-operated electronics requiring reliable serial communication.

Replacement Considerations

The MAX3241E from Analog Devices is a pin-compatible alternative with similar electrical characteristics. Other compatible options include the ST3241E and SP3241E. Verify that substitute parts maintain the same driver/receiver count and package dimensions for direct replacement.