SNJ54LVTH162244WD

Overview

The SNJ54LVTH162244WD is a military-grade, 3.3-V ABT octal buffer/driver featuring 16-bit capacity with three-state outputs. It supports mixed-mode signal operation, allowing 5-V input and output voltages while operating on a 3.3-V VCC supply. The device includes equivalent 22-ohm series resistors in the output ports to reduce overshoot and undershoot without external components. It operates down to 2.7 V for unregulated battery applications and features active bus-hold circuitry on data inputs to eliminate the need for external pullup or pulldown resistors.

Feature Summary

• Supports mixed-mode signal operation with 5-V tolerant inputs and outputs alongside 3.3-V VCC operation
• Integrated Ioff and power-up three-state circuitry enables safe hot-insertion applications
• Active bus-hold circuitry maintains valid logic states on unused or undriven data inputs
• Distributed VCC and GND pins minimize high-speed switching noise during operation

Applications

• Military-grade buffered memory address drivers
• Clock distribution buffers for high-speed systems
• Bus-oriented communications interfaces requiring 5-V tolerance
• High-performance register drives in aerospace environments

Procurement Notes

Verify that the specific part number matches the required military qualification standards and ceramic packaging configuration. Confirm that the ordering suffix corresponds to the intended temperature range and package type. Ensure compatibility with existing system voltage levels and interface requirements before finalizing procurement decisions.

Selection Notes

Select this component when a 16-bit buffer with 5-V tolerance and military reliability is required. Consider the CFP package for hermetic sealing needs. Evaluate the symmetric active-low OE inputs and flow-through architecture for optimal PCB layout efficiency compared to alternative logic families.

Part Context

This device belongs to Texas Instruments' Widebus family of 3.3-V ABT logic products. It is designed for low-voltage operation but provides TTL interface capabilities to 5-V system environments. The SNJ54LVTH162244 variant specifically denotes the military-grade version housed in a ceramic dual flatpack (CFP) package, ensuring performance under extreme environmental conditions.

Replacement Considerations

SN54LVTH162244WD

FAQ

How does the device handle unused inputs?

The device utilizes active bus-hold circuitry on all data inputs to hold them at a valid logic state, eliminating the need for external pullup or pulldown resistors.

What is the purpose of the internal series resistors?

The output ports include equivalent 22-ohm series resistors to reduce signal overshoot and undershoot, removing the requirement for external series termination resistors.

Can this device be used in hot-insertion applications?

Yes, the device is fully specified for hot-insertion applications due to its integrated Ioff and power-up three-state circuitry, which prevents damaging current backflow and driver conflicts.