SN74LVC245AZQNR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC245AZQNR is an automotive-grade octal bus transceiver designed for 1.65-V to 3.6-V VCC operation. It supports asynchronous communication between data buses with a maximum propagation delay of 6.3 ns at 3.3 V. The device features inputs that accept voltages up to 5.5 V, enabling mixed-mode signal operation. It includes Ioff support for partial-power-down mode and back drive protection. Latch-up performance exceeds 250 mA per JESD 17, and ESD protection exceeds JESD 22 specifications.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation on all ports, allowing 5-V input/output voltage compatibility with 3.3-V VCC.
• Ioff circuitry enables live insertion, partial-power-down mode, and back drive protection by disabling outputs during power loss.
• Latch-up performance exceeds 250 mA according to JESD 17 standards.

Buffers, Drivers, Receivers, Transceivers Applications

• Cable Modem Termination Systems
• Servers
• LED Displays
• Network Switches
• I/O Expanders

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the 'ZQ' suffix indicates automotive qualification requirements before procurement. Confirm package availability matches the specific BGA Microstar Junior 20 footprint required for the design. Ensure supply chain sources provide valid traceability documentation for automotive grade components.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when bidirectional data transfer between 8-bit buses is required in automotive environments. It is suitable for systems needing down voltage translation from 5 V to lower logic levels. Verify that the operating temperature range meets the specific application thermal constraints.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC245A family of octal bus transceivers manufactured by Texas Instruments. The ZQ suffix denotes automotive grade qualification. It provides non-inverting transmission controlled by DIR and OE pins within a compact surface-mount package.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC245ADBR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle partial-power-down scenarios?

The Ioff circuit disables the outputs to prevent damaging current backflow through the device when it is powered down.

What is the maximum input voltage tolerance?

Inputs can accept voltages up to 5.5 V regardless of the VCC level, supporting mixed-mode signal operation.