Texas Instruments SNJ54LVTH162244WD

Overview

SNJ54LVTH162244WD from Texas Instruments is a 3.3-V ABT 16-bit buffer/driver with 3-state outputs in a 48-lead CFP (WD) package, rated for –55°C to 125°C operation. It supports mixed-mode signaling (5-V inputs/outputs with 3.3-V V_CC), provides bus-hold on all data inputs, and integrates 22-Ω series output resistors to suppress overshoot/undershoot - used in military-grade backplane interface and high-reliability data path isolation.

For engineers reviewing the SNJ54LVTH162244WD datasheet, SNJ54LVTH162244WD pinout, SNJ54LVTH162244WD application, or SNJ54LVTH162244WD equivalent, key selection considerations include its MIL-PRF-38535 qualification, hot-insertion support via I_off and power-up 3-state, TTL-compatible 5-V interface capability, and guaranteed operation down to 2.7-V V_CC.

Technical Context

The SNJ54LVTH162244WD implements four independent 4-bit noninverting buffers, each with active-low 3-state enable (1OE–4OE). Its ABT (Advanced BiCMOS Technology) architecture delivers symmetrical drive strength (±12 mA), low ground bounce (<0.8 V typical), and distributed V_CC/GND pins to minimize switching noise.

Bus-hold circuitry actively maintains valid logic states on undriven inputs without external resistors, while I_off protection prevents current backflow during power-down. The device enters high-impedance state when V_CC is between 0 and 1.5 V, and supports unregulated battery operation across its full temperature range.

Key Specifications

Pinout & Package

The SNJ54LVTH162244WD uses a 48-lead Ceramic Dual Flatpack (CFP) package (WD), with gull-wing leads, hermetic ceramic body, and MIL-STD-1835/GDFP1-F48 compliance. Pin 1 is marked by an index point on the cap.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit buffer applications.

Compared with SN54LVTH162244WD and SN74LVTH162244DL, the SNJ54LVTH162244WD uniquely combines full MIL-PRF-38535 Class V qualification, hermetic CFP packaging, and guaranteed –55°C to 125°C operation - making it the sole option for flight-critical and space-qualified designs requiring documented reliability and traceable lot history.

Availability

SNJ54LVTH162244WD is available at Aetrix Electronics and suitable for avionics data bus interface, military backplane isolation, and secure communication module applications requiring stable component supply across long production lifecycles and extreme environmental conditions.

Supply support for SNJ54LVTH162244WD includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions with deep expertise in high-reliability design and military qualification.

The SNJ54LVTH162244WD belongs to TI's Widebus™ family of ABT logic devices, engineered specifically for demanding military, aerospace, and industrial systems requiring robust signal integrity, mixed-voltage interoperability, and guaranteed operation across extended temperature ranges.

FAQ

What is the operating temperature range of the SNJ54LVTH162244WD?

The SNJ54LVTH162244WD is fully specified for operation from –55°C to 125°C, meeting MIL-PRF-38535 Class V environmental requirements. This range is validated across all electrical parameters including propagation delay, drive strength, and bus-hold functionality - unlike commercial variants such as SN74LVTH162244DL, which only operate from –40°C to 85°C. The SNJ54LVTH162244WD achieves this through enhanced process controls and 100% temperature-screened testing.

Does the SNJ54LVTH162244WD support hot insertion?

Yes, the SNJ54LVTH162244WD supports hot insertion via two integrated features: I_off circuitry disables outputs when V_CC = 0 V to prevent damaging back-current flow, and power-up 3-state forces outputs into high-impedance during power ramp-up. These functions are verified per MIL-STD-883 methods and ensure safe live insertion into powered backplanes - a requirement explicitly met by the SNJ54LVTH162244WD but not guaranteed in commercial-grade equivalents.

Can the SNJ54LVTH162244WD interface directly with 5-V logic?

Yes, the SNJ54LVTH162244WD accepts input voltages up to 5.5 V and drives outputs compatible with 5-V TTL loads while operating from a 3.3-V V_CC. Its ABT input structure provides true 5-V tolerance without external clamping, and its ±12 mA output drive meets TTL fan-out requirements. This mixed-mode capability is intrinsic to the SNJ54LVTH162244WD design and confirmed across its full military temperature range.

What package type does the SNJ54LVTH162244WD use?

The SNJ54LVTH162244WD uses a 48-lead Ceramic Dual Flatpack (CFP) package designated WD, compliant with MIL-STD-1835 GDFP1-F48 and JEDEC MO-146AA. It features a hermetically sealed ceramic body, gull-wing leads, and an index point on the cap for pin 1 identification - distinct from plastic packages like SSOP (DL) or TSSOP (DGG) used in commercial variants of the same logic function.

How does bus-hold functionality work on the SNJ54LVTH162244WD?

The SNJ54LVTH162244WD incorporates active bus-hold circuitry on all 16 data inputs (1A1–4A4), maintaining a valid logic state (VIH ≥ 2 V or VIL ≤ 0.8 V) when inputs float. It sources or sinks ±75 µA minimum to hold the line, eliminating external pull-up/pull-down resistors. This feature is fully characterized from –55°C to 125°C and is integral to the SNJ54LVTH162244WD's reliability in unterminated military bus architectures.