ISL32432EIUZ-T7A

Overview

The ISL32432EIUZ-T7A is a half-duplex transceiver manufactured by Renesas Electronics Corporation, designed for RS-422 and RS-485 communication protocols. It integrates one driver and one receiver within an 8-pin MSOP surface-mount package. The device operates on a supply voltage ranging from 3V to 5.5V with a data rate of 250kbps. Key electrical specifications include a receiver hysteresis of 30 mV and an operating temperature range of -40°C to 85°C. The component features ±40V fault protection on the bus pins and ±15kV ESD protection, ensuring robust performance in industrial environments.

Feature Summary

• Provides ±40V overvoltage protection on the bus lines to safeguard against transient faults.
• Features full fail-safe receiver design that ensures a logic high output when inputs are floating or shorted.
• Supports ±15V common mode voltage range, exceeding standard RS-485 requirements.

Applications

• Industrial automation control systems requiring reliable serial communication.
• Building automation networks utilizing RS-485 multi-drop configurations.
• Data acquisition modules operating in electrically noisy environments.

Procurement Notes

Verify the specific ordering suffix T7A to confirm tape-and-reel packaging compatibility with automated assembly equipment. Ensure the procurement source provides valid RoHS3 compliance documentation. Cross-reference the manufacturer part number with official Renesas databases to authenticate the component origin before finalizing orders.

Selection Notes

Select this component when designing circuits requiring half-duplex RS-485/RS-422 communication with integrated fault protection. It is suitable for applications needing operation across a wide supply voltage range of 3V to 5.5V. Consider the 8-MSOP package dimensions for PCB layout constraints and verify thermal management requirements for the specified operating temperature range.

Part Context

This part belongs to the ISL3243xE series of fault-protected transceivers. It shares functional similarities with other members like the ISL32435E and ISL32437E but differs in specific pinout configurations and feature sets such as shutdown modes or additional drivers. The series is characterized by its ability to withstand harsh electrical conditions while maintaining signal integrity.

Replacement Considerations

ISL32432EIUZ is a non-tape variant of the same core device. ISL32437EIUZ offers similar half-duplex functionality but may differ in specific interface characteristics. Verify pin-to-pin compatibility and electrical parameter alignment before substituting these parts in existing designs.

FAQ

What is the receiver hysteresis value for the ISL32432EIUZ-T7A?

The receiver hysteresis is specified as 30 mV, which helps prevent false triggering due to noise on the differential input lines.

Does the ISL32432EIUZ-T7A support shutdown mode?

Yes, the datasheet indicates the presence of a shutdown feature to reduce power consumption when the transceiver is not actively transmitting or receiving.

What is the maximum common mode voltage supported by this transceiver?

The device supports a common mode voltage range of up to ±15V, which exceeds the standard RS-485 requirement of ±7V.