SN74LVTH2952PW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVTH2952PW is an octal bus transceiver and register manufactured by Texas Instruments, 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 stored on the low-to-high clock transition when clock-enable is low. 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. It operates within a temperature range of -40°C to +85°C in a TSSOP-24 package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation with 5-V input/output voltages while operating at 3.3 V
• Active bus-hold circuitry eliminates the need for external pullup or pulldown resistors
• Provides Ioff and power-up 3-state functionality to prevent damaging current backflow during hot insertion
• Designed specifically for low-voltage 3.3-V VCC operation with TTL interface compatibility

Buffers, Drivers, Receivers, Transceivers Applications

• Mixed-mode signal environments requiring 5-V system interfacing
• Hot-insertion applications utilizing Ioff and power-up 3-state support
• Bidirectional data storage between two octal buses

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix matches the required package type, as the PW suffix denotes the TSSOP package. Confirm RoHS compliance status and lead finish details via the manufacturer's official documentation before procurement. Ensure the component meets the specified operating temperature range for your application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring bidirectional octal data transfer with integrated latching capabilities. It is suitable for systems needing TTL-level compatibility with 3.3-V logic. Consider the TSSOP-24 package constraints and verify that the active bus-hold feature adequately replaces external pull-up/down resistors in your schematic design.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74LVTH series of low-voltage CMOS logic components. It functions as both a bus transceiver and a register, distinguishing it from standard buffers or simple transceivers. The technology utilizes BiCMOS processes to achieve high-speed performance while maintaining low power consumption typical of LVTH family devices.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVTH2952PWR (Tape and reel version of the same device)

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle unused inputs?

The device includes active bus-hold circuitry that holds unused or floating data inputs at a valid logic level, eliminating the need for external pullup or pulldown resistors.

What is the function of the Ioff circuitry?

The Ioff circuitry disables the outputs when VCC is between 0 and 1.5 V, preventing damaging current backflow through the device during power-down or hot-insertion scenarios.