SN74LVTH2952NSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVTH2952NSR 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 stored on the low-to-high clock transition when the clock-enable input is low, while output enable inputs access the stored data. The device supports unregulated battery operation down to 2.7 V and features active bus-hold circuitry to eliminate external pullup or pulldown resistors.

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
• Features active bus-hold circuitry on data inputs to maintain valid logic levels without external components
• Includes Ioff and power-up 3-state support to facilitate safe hot-insertion applications
• Provides latch-up protection exceeding 500 mA per JESD 17 standards

Buffers, Drivers, Receivers, Transceivers Applications

• Mixed-mode signal processing between 3.3-V and 5-V logic domains
• Bidirectional data storage in bus architectures requiring simultaneous port access
• Hot-insertion systems utilizing controlled power-up states

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'NSR' corresponds to the SOP-24 tape and reel packaging configuration. Confirm that the component meets RoHS compliance requirements as indicated in the manufacturer's documentation. Ensure the supply voltage range aligns with the recommended operating conditions for the target application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring bidirectional octal data latching with mixed-voltage compatibility. The LVTH series offers high-speed performance suitable for demanding digital interfaces. Consider the package constraints and thermal characteristics during PCB layout planning to ensure reliable operation within the specified temperature range.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the Texas Instruments SN74LVTH family of low-voltage CMOS logic devices. The LVTH series is engineered to bridge 3.3-V and 5-V logic systems, offering robust performance in mixed-signal environments. The SN74LVTH2952 specifically provides dual 8-bit registers for efficient data management in complex digital circuits.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVTH2952DW

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle floating inputs?

Active bus-hold circuitry is provided on the data inputs to hold unused or floating inputs at a valid logic level, eliminating the need for external pullup or pulldown resistors.

What is the mechanism for data storage?

Data on either bus is stored in the registers on the low-to-high transition of the respective clock input, provided that the corresponding clock-enable input is held low.