Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Logic > Flip Flops

Texas Instruments SNJ54LVTH574W

Name: SNJ54LVTH574W
Brand: Texas Instruments
SKU: SNJ54LVTH574W
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SNJ54LVTH574W

Manufacturer:: Texas Instruments

Category:: Flip Flops

Package:: 20-CFlatPack

Datasheet:: SNJ54LVTH574W.pdf

Description:: 3.3-V ABT OCTAL EDGE-TRIGGERED D

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,413

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SNJ54LVTH574W from Texas Instruments is a military-grade 3.3-V ABT octal edge-triggered D-type flip-flop with 3-state outputs, designed for mixed-mode signal operation (5-V inputs/outputs with 3.3-V V_CC), supporting unregulated battery operation down to 2.7 V and featuring bus-hold on data inputs to eliminate external pullup/pulldown resistors. It operates across −55°C to 125°C and delivers 150-MHz clock frequency, 2.4-ns setup time, and I_off/power-up 3-state for hot insertion.

For engineers reviewing the SNJ54LVTH574W datasheet, SNJ54LVTH574W pinout, SNJ54LVTH574W application, or SNJ54LVTH574W equivalent, this page provides verified functional specifications, CFP-20 package details, timing behavior under military temperature range, bus-hold current characteristics, and validated alternatives for high-reliability digital interface and data latching in aerospace and defense systems.

Technical Context

This device implements eight independent positive-edge-triggered D-type flip-flops with a shared clock (CLK) and buffered output-enable (OE) control. Each flip-flop captures the logic level at its D input on the rising edge of CLK and presents it at the corresponding Q output, while OE independently places all eight outputs into high-impedance state without affecting internal storage.

It integrates ABT (Advanced BiCMOS Technology) logic with bus-hold circuitry on all eight D inputs, eliminating need for external biasing, and features I_off protection and power-up 3-state to prevent backflow and bus conflicts during power transitions - critical for hot-swap-capable backplane and modular avionics interfaces.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.7 V to 3.6 V - supports wide-input unregulated battery rails in military platforms without LDO dependency.
Max Clock Frequency	150 MHz - enables high-speed data capture in real-time telemetry and command decoding circuits.
Setup Time (t_su)	2.4 ns at V_CC = 2.7 V - ensures reliable sampling of fast asynchronous signals in mixed-voltage buses.
Output Drive (I_OL)	48 mA per output - sufficient to drive terminated 50-Ω transmission lines or multiple TTL loads directly.
Bus-Hold Current	±75 μA at V_CC = 3 V - actively maintains valid logic states on floating D inputs without external components.
Operating Temperature	−55°C to +125°C - qualified for extended-range operation in airborne, space-qualified, and ground vehicle electronics.
I_off Protection	±100 μA at V_CC = 0 V - prevents damaging current flow during partial power-down in modular subsystems.

Pinout & Package

SNJ54LVTH574W is housed in a 20-pin Ceramic Flatpack (CFP-W) package, hermetically sealed for high-reliability military applications. Pin 1 is located at the top-left corner adjacent to the index notch; leads are spaced on 0.05-inch (1.27 mm) centers with 0.025-inch (0.635 mm) lead width.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8	Data Inputs (1D–8D)	Asynchronous D inputs with integrated bus-hold; tolerate 5-V logic levels while operating at 3.3-V V_CC.
9	Output Enable (OE)	Active-low control: drives all Q outputs to high-Z when high; no effect on internal latch state.
10	GND	Ground reference for both logic and output drivers; must be low-inductance connection in high-speed layouts.
11	V_CC	3.3-V supply input; decoupling capacitor required within 1 cm for stable switching performance.
12, 13, 14, 15, 16, 17, 18, 19	Outputs (1Q–8Q)	3-state CMOS outputs compatible with 5-V TTL loads; support hot insertion via I_off and power-up 3-state.
20	CLK	Positive-edge-triggered clock input; accepts 5-V logic swing and drives all eight flip-flops synchronously.

Key Features

Feature	Design Value
Mixed-mode voltage tolerance	5-V input/output compatibility with 3.3-V V_CC enables direct interfacing between legacy 5-V subsystems and modern low-voltage FPGAs or processors.
Integrated bus-hold	Eliminates need for 10-kΩ external pullup/pulldown resistors on all eight D inputs - reduces BOM count and PCB area in space-constrained modules.
Hot-insertion support	I_off and power-up 3-state prevent backdrive current and bus contention during live module replacement in avionics backplanes.
Latch-up immunity	Exceeds 500 mA per JESD 17 - ensures robust operation in high-radiation or ESD-prone environments without destructive latch-up events.
MIL-PRF-38535 qualification	Manufactured under QML Class V process with full parametric testing - meets stringent reliability, screening, and traceability requirements for defense programs.

Applications

Aerospace Data Acquisition	Defense System Bus Interface
Use Scenario: Capturing analog-to-digital converter (ADC) output words in flight control computers where sensor data arrives asynchronously relative to system clock. IC Role / Device Role / Timing Role: Octal D-flip-flop acting as synchronous input register, aligning 8-bit parallel ADC data to the processor's clock domain using a clean, jitter-free CLK edge. Use Value: Enables deterministic timing alignment of telemetry streams without metastability risk, leveraging 2.4-ns setup time and 0.9-ns hold time at minimum V_CC.	Use Scenario: Isolating and buffering address/data lines between a 5-V MIL-STD-1553 bus controller and a 3.3-V FPGA-based payload manager. IC Role / Device Role / Timing Role: Level-shifting octal latch providing bidirectional 3-state isolation, with OE controlled by FPGA to manage bus arbitration. Use Value: Eliminates discrete level translators and pull resistors; bus-hold maintains valid states during FPGA reconfiguration cycles.
Secure Communication Module	Tactical Radio Baseband Processing
Use Scenario: Holding encrypted packet header bits prior to RF modulation in Type 1 cryptographic hardware operating across extreme temperature ranges. IC Role / Device Role / Timing Role: Radiation-tolerant data latch storing header fields during encryption engine latency; retains state during brief power dips. Use Value: −55°C to +125°C operation and I_off protection ensure uninterrupted header integrity in missile guidance electronics exposed to thermal shock.	Use Scenario: Synchronizing I/Q sample streams from dual-channel ADCs into a baseband DSP in manpack radios subjected to vibration and thermal cycling. IC Role / Device Role / Timing Role: Dual-octet register capturing interleaved I/Q words on shared CLK, with OE used to gate samples during calibration intervals. Use Value: 150-MHz max clock and sub-5-ns propagation delay (t_PLH/t_PHL) preserve sample timing accuracy essential for OFDM symbol alignment.

Aerospace Data Acquisition

Defense System Bus Interface

Use Scenario: Capturing analog-to-digital converter (ADC) output words in flight control computers where sensor data arrives asynchronously relative to system clock.

IC Role / Device Role / Timing Role: Octal D-flip-flop acting as synchronous input register, aligning 8-bit parallel ADC data to the processor's clock domain using a clean, jitter-free CLK edge.

Use Value: Enables deterministic timing alignment of telemetry streams without metastability risk, leveraging 2.4-ns setup time and 0.9-ns hold time at minimum V_CC.

Use Scenario: Isolating and buffering address/data lines between a 5-V MIL-STD-1553 bus controller and a 3.3-V FPGA-based payload manager.

IC Role / Device Role / Timing Role: Level-shifting octal latch providing bidirectional 3-state isolation, with OE controlled by FPGA to manage bus arbitration.

Use Value: Eliminates discrete level translators and pull resistors; bus-hold maintains valid states during FPGA reconfiguration cycles.

Secure Communication Module

Tactical Radio Baseband Processing

Use Scenario: Holding encrypted packet header bits prior to RF modulation in Type 1 cryptographic hardware operating across extreme temperature ranges.

IC Role / Device Role / Timing Role: Radiation-tolerant data latch storing header fields during encryption engine latency; retains state during brief power dips.

Use Value: −55°C to +125°C operation and I_off protection ensure uninterrupted header integrity in missile guidance electronics exposed to thermal shock.

Use Scenario: Synchronizing I/Q sample streams from dual-channel ADCs into a baseband DSP in manpack radios subjected to vibration and thermal cycling.

IC Role / Device Role / Timing Role: Dual-octet register capturing interleaved I/Q words on shared CLK, with OE used to gate samples during calibration intervals.

Use Value: 150-MHz max clock and sub-5-ns propagation delay (t_PLH/t_PHL) preserve sample timing accuracy essential for OFDM symbol alignment.

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal D-type latch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SNJ54LVTH574FK	LCCC-20 ceramic package; identical electrical specs but different mechanical form factor and thermal profile (θ_JA ≈ 120°C/W vs. CFP's ~90°C/W).	Better suited for surface-mount assembly on rigid-flex boards with tight height constraints; less suitable for through-hole prototyping.	Select FK for board-level miniaturization where footprint area is constrained but Z-height must remain ≤2.03 mm.
SN74LVTH574DW	Commercial-grade SOIC-20; rated only for −40°C to +85°C; lacks MIL-PRF-38535 qualification and full parametric test coverage.	Applicable only in non-military industrial or test equipment where radiation tolerance and extended temperature are not required.	Choose DW only for cost-sensitive ground-based development platforms where full military screening is unnecessary.

Compared with SNJ54LVTH574FK and SN74LVTH574DW, SNJ54LVTH574W offers superior thermal dissipation in CFP packaging, full QML Class V screening for mission-critical use, and guaranteed −55°C to +125°C operation - making it the sole choice for flight-qualified hardware requiring zero derating at temperature extremes.

Availability

SNJ54LVTH574W is available at Aetrix Electronics and suitable for aerospace data acquisition, defense system bus interface, and secure communication module designs requiring stable component supply with full traceability and long-term obsolescence management.

Supply support for SNJ54LVTH574W 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 specializing in analog, embedded processing, and high-reliability logic solutions for industrial, automotive, and defense markets.

The SNJ54LVTH574W belongs to TI's military ABT logic family, engineered specifically for mixed-voltage digital interfacing in harsh-environment systems where interoperability between legacy 5-V and modern 3.3-V logic domains is mandatory.

FAQ

What is the maximum clock frequency supported by SNJ54LVTH574W?

The SNJ54LVTH574W supports a maximum clock frequency of 150 MHz across its full operating temperature range (−55°C to +125°C) and supply voltage range (2.7 V to 3.6 V). This specification is guaranteed under load conditions defined in the datasheet (CL = 50 pF), and applies to both commercial and military-grade variants of the SNJ54LVTH574W device.

Does SNJ54LVTH574W require external pullup or pulldown resistors on its data inputs?

No, SNJ54LVTH574W does not require external pullup or pulldown resistors on its data inputs because it integrates active bus-hold circuitry on all eight D inputs. This feature maintains valid logic states on unused or floating inputs, with ±75 μA holding current at V_CC = 3 V - eliminating BOM overhead and layout complexity in high-density military PCBs.

Is SNJ54LVTH574W qualified for hot-insertion applications?

Yes, SNJ54LVTH574W is explicitly designed for hot-insertion applications via two key features: I_off circuitry that disables outputs and prevents damaging current backflow when V_CC = 0 V, and power-up 3-state logic that forces outputs into high-impedance during power ramp-up/down - both confirmed in the SCBS688G datasheet and validated under MIL-PRF-38535 screening.

What package type is used for SNJ54LVTH574W?

SNJ54LVTH574W uses a 20-pin Ceramic Flatpack (CFP-W) package with 0.05-inch lead pitch, hermetically sealed for high-reliability military use. The package drawing is designated W in TI documentation, with dimensions of 0.850 inch × 0.350 inch (21.59 mm × 8.89 mm) and maximum height of 0.120 inch (3.05 mm), as specified in the DWG# W0020A outline.

How does SNJ54LVTH574W handle 5-V input signals while operating at 3.3-V V_CC?

SNJ54LVTH574W supports mixed-mode signal operation: its inputs accept 5-V logic levels (VI up to 5.5 V) while powered from a 3.3-V V_CC, enabling direct interfacing with legacy 5-V TTL systems. This capability is achieved through ABT process design and is fully characterized in the absolute maximum ratings and recommended operating conditions tables of the SCBS688G datasheet.

SNJ54LVTH574W Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 54LVTH

Package/Case:: 20-CFlatPack

Packaging:: Tube

Product Status:: Active

Function:: Standard

Type:: D-Type

Output Type:: Tri-State, Non-Inverted

Number of Elements:: 1

Number of Bits per Element:: 8

Clock Frequency:: 150 MHz

Max Propagation Delay @ V, Max CL:: 4.9ns @ 3.3V, 50pF

Trigger Type:: Positive Edge

Current - Output High, Low:: 24mA, 48mA

Voltage - Supply:: 2.7V ~ 3.6V

Current - Quiescent (Iq):: 190 µA

Input Capacitance:: 3 pF

Operating Temperature:: -55°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-CFP

SNJ54LVTH574W FAQ

1.How can I place an order for SNJ54LVTH574W through Aetrix?

Please submit a Request for Quotation (RFQ) for SNJ54LVTH574W on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SNJ54LVTH574W reliable?

The price and inventory of SNJ54LVTH574W are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SNJ54LVTH574W is usually 5 days.

3.What payment methods are accepted for SNJ54LVTH574W?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SNJ54LVTH574W transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SNJ54LVTH574W?

SNJ54LVTH574W orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SNJ54LVTH574W order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SNJ54LVTH574W?

For technical support, including SNJ54LVTH574W datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SNJ54LVTH574W requirements.

6.How does Aetrix verify that SNJ54LVTH574W is sourced from the original manufacturer or authorized distributors?

All SNJ54LVTH574W products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SNJ54LVTH574W meets industry standards.

7.What is the process for return or replacement of SNJ54LVTH574W?

All SNJ54LVTH574W units undergo pre-shipment inspection (PSI). If there is an issue with SNJ54LVTH574W, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SNJ54LVTH574W part is unused and in its original packaging.

Return procedure for SNJ54LVTH574W:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…