SN74LVTH2952PWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVTH2952PWR is an octal bus transceiver and register designed for low-voltage 3.3-V VCC operation with TTL interface capability to 5-V systems. It consists of two 8-bit back-to-back registers storing data flowing bidirectionally between buses A and B. Data is latched on the low-to-high clock transition when clock-enable is low, while output-enable controls access. The device supports unregulated battery operation down to 2.7 V, features active bus-hold circuitry, and provides Ioff and power-up 3-state support for hot insertion.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation by providing a TTL interface to 5-V system environments while operating at 3.3 V.
• Contains two 8-bit back-to-back registers that store data flowing in both directions between two bidirectional buses.
• Features active bus-hold circuitry on data inputs to maintain valid logic levels without external pullup or pulldown resistors.
• Includes Ioff and power-up 3-state circuitry to prevent damaging current backflow and driver conflicts during hot insertion.

Buffers, Drivers, Receivers, Transceivers Applications

• Hot-insertion applications requiring protection against current backflow
• Bidirectional data storage between 3.3-V and 5-V system buses
• Unregulated battery-powered system interfaces

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'PWR' corresponds to the TSSOP-24 tape and reel packaging configuration. Confirm the manufacturer part number matches the datasheet exactly to ensure correct package type and moisture sensitivity level. Check RoHS compliance status and lead finish details in the latest package addendum before finalizing procurement specifications.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when bidirectional data latching is required between 3.3-V and 5-V logic domains. The integrated bus-hold feature simplifies design by eliminating external resistors. Ensure the application utilizes the clock-enable control for precise data capture timing. Verify that the 3.3-V supply voltage range meets the system requirements for proper operation.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the Texas Instruments LVTH logic family, which combines ABT technology with low-voltage operation. It is functionally related to other octal bus transceivers but uniquely integrates dual 8-bit registers for bidirectional data storage. The PWR suffix indicates surface-mount TSSOP packaging suitable for automated assembly processes.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVTH2952PW (Tube version)

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle unused or floating data inputs?

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level, making external pullup or pulldown resistors unnecessary.

What mechanism prevents damage during hot insertion?

The device features Ioff circuitry that disables outputs when powered down to prevent backflow, and power-up 3-state circuitry that places outputs in a high-impedance state during power transitions.