ICL3237EIAZ-T

Overview

The ICL3237EIAZ-T is a low-power RS-232 transceiver manufactured by Renesas Electronics. It operates on a single power supply ranging from 3 V to 5.5 V, supporting both 3.3 V and 5 V logic systems. The device integrates five drivers and three receivers for full-duplex communication with a data rate of 1 Mb/s. It features an automatic shutdown mode that reduces operating current to 1 mA and standby current to 1 µA. ESD protection is rated at 15 kV. The component is housed in an SSOP-28 package and functions within a temperature range of -40 °C to +85 °C.

Feature Summary

• Automatic shutdown circuitry reduces standby power consumption significantly when no valid signal is detected.
• Integrated charge pumps enable operation from a single 3 V to 5.5 V supply without external voltage inversion components.
• High electrostatic discharge tolerance protects RS-232 I/O pins against transient events.

Applications

• Portable computing devices such as PDAs and palmtops requiring low standby power.
• ISDN terminal adaptors and peripheral interfaces.
• Notebook and laptop computer serial communication ports.

Procurement Notes

Verify the specific suffix 'T' indicates reel or cut tape packaging configuration upon ordering. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the SSOP-28 footprint matches the target PCB layout constraints. Validate humidity sensitivity handling requirements during assembly processes.

Selection Notes

Select this component for applications requiring high-speed 1 Mb/s transmission over standard RS-232 lines. It is suitable for designs needing reduced power consumption in battery-operated equipment. Verify compatibility with existing system voltage levels between 3 V and 5.5 V. Consider the SSOP-28 package size relative to available board space compared to alternative interface solutions.

Part Context

This part belongs to the ICL3237 series of RS-232 interface integrated circuits. It serves as a successor to earlier generations like the ICL3217, offering improved data rates while maintaining low power characteristics. The device is designed to replace legacy transceivers in modern portable electronics where space and energy efficiency are critical design parameters.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Cross-reference with other members of the ICL32XXE family for functional similarities, but verify pinout and electrical specifications independently before substitution.