CLVTH16952IDGGREP

Overview

The CLVTH16952IDGGREP is a military-enhanced, 16-bit registered transceiver from the SN74LVTH16952-EP series by Texas Instruments. It utilizes Advanced BiCMOS (ABT) technology for 3.3-V operation with low static-power dissipation and supports mixed-mode signal operation, allowing 5-V input/output compatibility. The device operates within a supply voltage range of 2.7 V to 3.6 V and an ambient temperature range of -40°C to +85°C. It features Ioff and power-up 3-state support for hot-insertion applications, active bus-hold on data inputs, and distributed VCC/GND pins to minimize switching noise. Packaged in a 56-pin Thin Shrink Small-Outline (DGG) TSSOP.

Feature Summary

• Military-grade enhanced plastic construction with controlled baseline manufacturing and enhanced diminishing manufacturing sources support.
• Registered transceiver architecture with independent clock and output enable controls for each A-to-B and B-to-A direction.
• Active bus-hold circuitry maintains valid logic levels on floating or unused data inputs without external resistors.
• Integrated Ioff and power-up 3-state circuits prevent damaging backflow currents and driver conflicts during hot insertion.

Applications

• Military and aerospace systems requiring qualified widebus family components
• High-speed data acquisition systems utilizing registered bus architectures
• Mixed-voltage system environments interfacing 3.3-V logic with 5-V peripherals

Procurement Notes

Verify the specific ordering suffix IDGGREP corresponds to the Tape and Reel packaging format and the DGG 56-pin package configuration. Confirm that the component meets the required environmental specifications for your application, as this part is designated as a military-enhanced device. Ensure all control inputs are properly terminated to VCC or GND to maintain operational integrity.

Selection Notes

Select this component when a registered 16-bit transceiver is required for high-speed data latching in mixed-voltage environments. The ABT technology provides superior performance over standard LVC families regarding ground bounce and speed. Consider the registered nature of the device if data synchronization at the receiving end is necessary to mitigate skew issues across wide buses.

Part Context

This device belongs to the SN74LVTH16952-EP family, which represents the military-enhanced version of the standard LVTH16952 transceiver. It shares functional similarities with other Widebus family members but offers enhanced reliability features such as one assembly/test site and one fabrication site. The EP designation indicates qualification in accordance with JEDEC and industry standards for extended temperature ranges.

Replacement Considerations

Direct replacement options include the commercial grade SN74LVTH16952DGGR. For non-registered applications, the SN74LVTH16245 may be considered, though it lacks the internal register functionality. Verify pinout compatibility and electrical characteristics before substituting with non-EP variants.

FAQ

How does the device handle hot-insertion scenarios?

The CLVTH16952IDGGREP includes dedicated Ioff and power-up 3-state circuitry. This ensures outputs remain in a high-impedance state during power-up or power-down, preventing current backflow and driver conflicts when the system is live.

What is the function of the bus-hold feature?

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

Can this device interface between 3.3-V and 5-V systems?

Yes, the device supports mixed-mode signal operation. It is designed for 3.3-V VCC operation but can tolerate 5-V input and output voltages, making it suitable for interfacing with 5-V system environments.