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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments SNJ54ABT241FK

Name: SNJ54ABT241FK
Brand: Texas Instruments
SKU: SNJ54ABT241FK
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SNJ54ABT241FK

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: -

Datasheet:: SNJ54ABT241FK.pdf

Description:: 54ABT241 OCTAL BUFFERS/DRIVERS W

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Product details

Overview

SNJ54ABT241FK from Texas Instruments is a military-grade octal noninverting buffer/driver with 3-state outputs, designed for high-density memory address and bus-oriented applications. It operates across –55°C to 125°C, delivers ±32-mA/±64-mA drive strength, features EPIC-II^B BiCMOS architecture for low power dissipation, and uses a 20-pin LCCC (FK) ceramic package.

For engineers reviewing the SNJ54ABT241FK datasheet, SNJ54ABT241FK pinout, SNJ54ABT241FK application, or SNJ54ABT241FK equivalent, this device is selected for high-reliability military and aerospace systems requiring robust 3-state bus driving, latch-up immunity >500 mA, and ESD protection >2000 V per MIL-STD-883.

Technical Context

The SNJ54ABT241FK implements two independent 4-bit noninverting buffer sections (1A→1Y and 2A→2Y), each controlled by an active-low output-enable (OE) input. Its EPIC-II^B BiCMOS process enables TTL-compatible input thresholds (V_IL = 0.8 V, V_VIH = 2 V) while supporting 5-V supply operation with rail-to-rail output swing.

Output switching is characterized at CL = 50 pF, with propagation delays t_PLH/t_PHL ≤ 4.4 ns and enable/disable times t_PZH/t_PZL ≤ 7 ns. Ground bounce (V_OLP) is specified <1 V at V_CC = 5 V, TA = 25°C, ensuring signal integrity in fast-switching bus environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	4.5 V to 5.5 V - Ensures compatibility with standard 5-V TTL and CMOS logic rails without level-shifting.
I_OH/I_OL	–32 mA / 64 mA - Supports high-fanout bus loading and drives heavy capacitive loads without external buffers.
t_PLH/t_PHL	≤ 4.4 ns @ CL = 50 pF - Enables reliable operation in sub-10-ns timing-critical address/data paths.
Latch-up Immunity	>500 mA per JESD-17 - Guarantees robustness against transient current faults in harsh environments.
ESD Protection	>2000 V HBM, >200 V MM - Meets MIL-STD-883 requirements for handling and board-level reliability.
Operating Temperature	–55°C to 125°C - Qualified for full military temperature range, suitable for avionics and space-qualified subsystems.
V_OLP (Ground Bounce)	<1 V @ V_CC = 5 V - Minimizes noise coupling into shared ground planes during simultaneous output switching.

Pinout & Package

LCCC (FK) package: 20-terminal leadless ceramic chip carrier, hermetically sealed, 8.89 mm × 8.89 mm footprint, 1.27 mm pitch, 2.03 mm max height, designed for high-reliability military PCB mounting with solder reflow or epoxy bonding.

Pin/Terminal	Circuit Role	Design Meaning
1OE, 19	Active-low output enable for Channel 1 (1A1–1A4 → 1Y1–1Y4)	Drives all four Channel 1 outputs into high-impedance when high; requires pull-up to V_CC for power-up safety.
2OE, 2	Active-low output enable for Channel 2 (2A1–2A4 → 2Y1–2Y4)	Independent control of Channel 2; enables bidirectional bus partitioning and staggered enable sequencing.
1A1–1A4, 3,5,7,9	Noninverting inputs for Channel 1	Accept TTL/CMOS logic levels; VIH = 2 V min ensures noise margin in noisy military platforms.
2A1–2A4, 11,13,15,17	Noninverting inputs for Channel 2	Electrically isolated from Channel 1 inputs; supports dual-bus or mirrored signal routing.
1Y1–1Y4, 18,16,14,12	Noninverting 3-state outputs for Channel 1	High-drive outputs (64 mA sink) with controlled edge rates; VOL ≤ 0.55 V @ 48 mA ensures valid logic LOW under load.
2Y1–2Y4, 10,8,6,4	Noninverting 3-state outputs for Channel 2	Matched electrical characteristics to Channel 1; allows symmetrical bus driver design across both channels.
V_CC, 20	Positive supply	Must be decoupled locally; ICC ≤ 30 mA max ensures stable power delivery in multi-device backplanes.
GND, 10	Signal and power ground	Single ground reference for all I/O; layout must minimize inductance to suppress V_OLP.

Key Features

Feature	Design Value
EPIC-II^B BiCMOS Process	Reduces static power consumption vs. bipolar-only equivalents while retaining TTL-compatible speed and drive.
Symmetrical Active-Low OE Inputs	Enables clean, glitch-free bus arbitration via simple OR/NOR logic; eliminates need for inverters in enable control networks.
High-Drive Outputs (–32 mA / 64 mA)	Drives up to 20+ TTL loads or long PCB traces without signal degradation or timing skew.
Input Clamp Current (–18 mA)	Allows safe interfacing with overvoltage or hot-plug sources without external protection diodes.
Output Clamp Current (–50 mA)	Protects against negative transients on bus lines, critical in MIL-STD-461E conducted emissions environments.

Applications

Memory Address Buffering	High-Speed Bus Transceiver
Use Scenario: Driving 20-bit address buses between microprocessor and SRAM/ROM in airborne mission computers. IC Role / Device Role / Timing Role: Noninverting octal buffer providing fanout expansion and noise isolation between CPU and memory arrays. Use Value: Delivers sub-5-ns propagation delay and <1-V ground bounce to maintain setup/hold timing margins across extended temperature ranges.	Use Scenario: Bidirectional data bus isolation between DSP and FPGA in radar signal processing modules. IC Role / Device Role / Timing Role: Dual-channel 3-state driver enabling time-multiplexed read/write cycles on shared 32-bit data paths. Use Value: Independent OE controls allow precise channel gating, preventing bus contention during clock domain crossings.
Clock Distribution Network	Military Backplane Interface
Use Scenario: Distributing synchronized clock signals to multiple ADC/DAC channels in electronic warfare receivers. IC Role / Device Role / Timing Role: Low-skew buffer replicating master clock to eight analog front-end ICs with matched trace lengths. Use Value: Matched t_PLH/t_PHL and tight enable timing (t_PZH ≤ 7 ns) ensure <100-ps inter-channel skew at 50-MHz operation.	Use Scenario: Interfacing VMEbus or CompactPCI control signals between chassis backplane and plug-in processor cards. IC Role / Device Role / Timing Role: Robust 3-state driver handling hot-swap insertion, ESD events, and voltage transients on shared bus lines. Use Value: >500 mA latch-up immunity and >2000 V HBM ESD rating meet MIL-STD-883 Class B requirements for field-deployable systems.

Memory Address Buffering

High-Speed Bus Transceiver

Use Scenario: Driving 20-bit address buses between microprocessor and SRAM/ROM in airborne mission computers.

IC Role / Device Role / Timing Role: Noninverting octal buffer providing fanout expansion and noise isolation between CPU and memory arrays.

Use Value: Delivers sub-5-ns propagation delay and <1-V ground bounce to maintain setup/hold timing margins across extended temperature ranges.

Use Scenario: Bidirectional data bus isolation between DSP and FPGA in radar signal processing modules.

IC Role / Device Role / Timing Role: Dual-channel 3-state driver enabling time-multiplexed read/write cycles on shared 32-bit data paths.

Use Value: Independent OE controls allow precise channel gating, preventing bus contention during clock domain crossings.

Clock Distribution Network

Military Backplane Interface

Use Scenario: Distributing synchronized clock signals to multiple ADC/DAC channels in electronic warfare receivers.

IC Role / Device Role / Timing Role: Low-skew buffer replicating master clock to eight analog front-end ICs with matched trace lengths.

Use Value: Matched t_PLH/t_PHL and tight enable timing (t_PZH ≤ 7 ns) ensure <100-ps inter-channel skew at 50-MHz operation.

Use Scenario: Interfacing VMEbus or CompactPCI control signals between chassis backplane and plug-in processor cards.

IC Role / Device Role / Timing Role: Robust 3-state driver handling hot-swap insertion, ESD events, and voltage transients on shared bus lines.

Use Value: >500 mA latch-up immunity and >2000 V HBM ESD rating meet MIL-STD-883 Class B requirements for field-deployable systems.

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal 3-state buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SNJ54ABT240FK	Inverting outputs (1A→1Y̅); identical pinout, timing, and drive strength.	Required where bus polarity inversion is needed for signal alignment or logic optimization.	Select when system-level logic requires inverted buffering without adding external inverters.
SNJ54ABT244FK	Two independent 4-bit noninverting buffers with complementary OE/OE̅ inputs; same FK package and temp range.	Supports active-high and active-low enable logic simultaneously; simplifies mixed-control bus architectures.	Choose for designs needing flexible enable polarity without redesigning enable generation circuitry.

Compared with SNJ54ABT240FK and SNJ54ABT244FK, the SNJ54ABT241FK provides dedicated noninverting functionality with single-polarity OE control-ideal for straightforward address/data buffering where polarity preservation and minimal enable logic are priorities.

Availability

SNJ54ABT241FK is available at Aetrix Electronics and suitable for military avionics, spaceflight payload interfaces, and ruggedized industrial control systems requiring stable component supply across extended temperature and lifecycle demands.

Supply support for SNJ54ABT241FK 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 components for industrial, automotive, and defense markets.

The SNJ54ABT241FK belongs to TI's military-grade ABT logic family, engineered for high-speed, high-drive 3-state bus interfacing in mission-critical systems operating under extreme environmental stress.

FAQ

What is the operating temperature range of the SNJ54ABT241FK?

The SNJ54ABT241FK is characterized for operation from –55°C to 125°C, meeting full military temperature specifications per MIL-PRF-38535. This range is validated across all electrical parameters including propagation delay, output drive, and 3-state leakage, making SNJ54ABT241FK suitable for deployment in jet engine controllers, satellite power management units, and other high-stress environments where commercial-grade parts would fail.

Does the SNJ54ABT241FK require external pull-up resistors on its OE pins?

Yes - to ensure the high-impedance state during power-up or power-down, OE pins (1OE and 2OE) must be tied to V_CC through a pull-up resistor. The minimum resistance value depends on the current-sinking capability of the driver controlling OE; TI recommends verifying against the specific control logic's I_OL rating. Failure to implement pull-ups risks bus contention or undefined output states at power transition.

How does the SNJ54ABT241FK differ from the commercial-grade SN74ABT241A?

The SNJ54ABT241FK differs from the SN74ABT241A in three key ways: it is screened to MIL-PRF-38535 Class B standards, rated for –55°C to 125°C operation (vs. –40°C to 85°C), and packaged in a hermetic LCCC (FK) ceramic body (vs. plastic DB/DW/PW). Electrical specs are otherwise identical, but SNJ54ABT241FK undergoes additional burn-in, radiation hardness screening, and lot traceability required for defense contracts.

Can the SNJ54ABT241FK be used in place of the SN54ABT241 in legacy designs?

Yes - SNJ54ABT241FK is the qualified, production-ready version of SN54ABT241, sharing identical pinout, logic function, timing, and DC characteristics. It replaces earlier SN54ABT241 variants with enhanced process control, updated test coverage, and full compliance to current MIL-PRF-38535 revision requirements. No PCB or schematic changes are needed when upgrading from SN54ABT241 to SNJ54ABT241FK.

What is the maximum capacitive load the SNJ54ABT241FK can drive while maintaining timing specs?

The SNJ54ABT241FK's switching characteristics (e.g., t_PLH, t_PHL, t_PZH) are guaranteed only at C_L = 50 pF, as defined in the datasheet test conditions. While the device can physically drive higher capacitance (e.g., >100 pF), timing margins degrade linearly with load; for designs exceeding 50 pF, engineers must perform board-level timing analysis using the device's output impedance model and actual trace capacitance. SNJ54ABT241FK's 64-mA sink capability supports such loads but does not guarantee published delays beyond 50 pF.

SNJ54ABT241FK Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Logic Type:: -

Number of Elements:: -

Number of Bits per Element:: -

Input Type:: -

Output Type:: -

Current - Output High, Low:: -

Voltage - Supply:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

SNJ54ABT241FK FAQ

1.How can I place an order for SNJ54ABT241FK through Aetrix?

Please submit a Request for Quotation (RFQ) for SNJ54ABT241FK 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 SNJ54ABT241FK reliable?

The price and inventory of SNJ54ABT241FK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SNJ54ABT241FK is usually 5 days.

3.What payment methods are accepted for SNJ54ABT241FK?

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4.How is shipping managed for SNJ54ABT241FK?

SNJ54ABT241FK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SNJ54ABT241FK 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 SNJ54ABT241FK?

For technical support, including SNJ54ABT241FK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SNJ54ABT241FK requirements.

6.How does Aetrix verify that SNJ54ABT241FK is sourced from the original manufacturer or authorized distributors?

All SNJ54ABT241FK 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 SNJ54ABT241FK meets industry standards.

7.What is the process for return or replacement of SNJ54ABT241FK?

All SNJ54ABT241FK units undergo pre-shipment inspection (PSI). If there is an issue with SNJ54ABT241FK, 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 SNJ54ABT241FK part is unused and in its original packaging.

Return procedure for SNJ54ABT241FK:

1.Submit a request within 90 days.

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

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