ISL31496EIUZ-T7A

Overview

The ISL31496EIUZ-T7A is a full-duplex, fault-protected RS-485/RS-422 transceiver manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 4.5V to 5.5V and supports data rates up to 15Mbps. The device features an extended common mode range of ±25V and bus pin protection against faults up to ±60V. It utilizes a 10-lead MSOP package with a -40°C to +85°C operating temperature range. Key electrical parameters include a typical quiescent current of 2.3mA, shutdown current of 10µA, and receiver hysteresis of 25mV.

Feature Summary

• Full fail-safe receiver design ensures logic high output when inputs are floating, shorted, or on an undriven terminated bus.
• Integrated hot plug circuitry maintains three-state outputs during power-up and power-down sequences.
• High transient overvoltage tolerance provides robustness against cable faults and environmental stress.

Applications

• Utility meters and automated meter reading systems
• PROFIBUS and field bus networks in factory automation
• Security camera networks
• Building lighting and environmental control systems

Procurement Notes

Verify component authenticity through authorized channels as this part number is marked obsolete. Confirm the specific suffix matches the required tape and reel packaging specifications. Cross-reference datasheet FN7637 for final technical validation before integration into production designs.

Selection Notes

Select this component for applications requiring high noise immunity and operation in environments with significant common mode voltages. Ensure the system design accommodates the 10-lead MSOP footprint and thermal requirements. Verify compatibility with existing logic levels and bus termination strategies for optimal signal integrity.

Part Context

This device belongs to the ISL3149xE series of differential transceivers designed to exceed standard RS-485 and RS-422 requirements. It shares architectural similarities with other variants in the family but is distinctively configured for full-duplex communication at higher data rates compared to the slew-rate limited models.

Replacement Considerations

The ISL32496EIUZ-T is documented as a parameter-equivalent replacement. Verify pinout compatibility and electrical specifications against the original datasheet before substitution.

FAQ

What is the maximum common mode voltage range supported?

The device supports an extended common mode range of ±25V, which exceeds the standard RS-485 requirement.

How does the fail-safe feature function?

The receiver outputs a logic high state if the A and B inputs are unconnected (floating), shorted together, or connected to an idle, terminated bus.

Is the device suitable for hot-plugging?

Yes, it includes hot plug circuitry that keeps the transmitter and receiver outputs in a three-state condition during power-up and power-down.