ICL3241ECBZ-T

Overview

The ICL3241ECBZ-T is an RS-232 transceiver manufactured by Renesas Electronics Corporation, belonging to the ICL3241 series. It features a full-duplex architecture with three drivers and five receivers, supporting data rates up to 250 kb/s. The device operates on a supply voltage range of 3 V to 5.5 V, including compatibility with 3.3 V and 5.0 V systems. It incorporates a shutdown function that reduces operating supply current to 1 mA. The component provides ±15 kV electrostatic discharge (ESD) protection on RS-232 pins and utilizes a propagation delay of 0.15 µs. It is housed in an SSOP-28 package suitable for surface mount installation.

Feature Summary

• Integrated charge pump circuitry enabling operation from a single 3.0 V to 5.5 V power supply without external negative voltages.
• Includes one non-inverting always-active receiver designed to support wake-up functionality for serial port management.
• Provides enhanced robustness through ±15 kV ESD protection on transmitter outputs and receiver inputs per IEC61000-4-2 standards.

Applications

• Portable computers and notebook systems requiring complete serial port solutions.
• Personal digital assistants (PDAs) and handheld devices prioritizing low standby power consumption.
• Battery-powered equipment and peripherals utilizing mixed 3.3 V and 5.0 V logic levels.

Procurement Notes

Verify the specific suffix 'CBZ' against official Renesas documentation to confirm the exact package type and temperature rating, as variations exist within the ICL3241 family. Ensure the 'T' suffix indicates the correct reel packaging configuration required for automated assembly processes. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before procurement.

Selection Notes

Select this component when a design requires a comprehensive RS-232 interface with multiple transmit and receive lines in a compact form factor. It is appropriate for applications needing automatic or manual power-down capabilities to extend battery life in portable electronics. Consider the SSOP-28 footprint and thermal characteristics during PCB layout planning to ensure adequate spacing for the required external capacitors.

Part Context

This device is part of the broader ICL324xE family of low-power RS-232 transceivers developed by Intersil and now produced by Renesas. The family shares common architectural features such as the dual charge pump and ESD protection but varies in driver/receiver counts and specific package options. The ICL3241 variant specifically targets applications needing three drivers and five receivers for full serial port implementation.

Replacement Considerations

Compatible substitutes include the ST3241EB from STMicroelectronics and other members of the ICL324x family such as the ICL3243EIVZ, provided pinout and functional specifications match the design requirements.