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 > Buffers, Drivers, Receivers, Transceivers

Texas Instruments SNJ54AS241AJ

Name: SNJ54AS241AJ
Brand: Texas Instruments
SKU: SNJ54AS241AJ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SNJ54AS241AJ

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: -

Datasheet:: SNJ54AS241AJ.pdf

Description:: 54AS241A OCTAL BUFFERS/DRIVERS W

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:595

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

Product details

Overview

SNJ54AS241AJ from Texas Instruments is a military-grade octal 3-state noninverting buffer/driver with dual independent output-enable controls, designed for memory address bus driving and clock distribution in high-reliability systems. It operates across −55°C to 125°C, delivers 48 mA low-level output current (I_OL), supports 5 V supply, and features pnp input structure to reduce DC loading.

For engineers reviewing the SNJ54AS241AJ datasheet, SNJ54AS241AJ pinout, SNJ54AS241AJ application, or SNJ54AS241AJ equivalent, this page provides verified functional identity, military-temperature performance data, dual OE timing behavior, 3-state bus-driving capability, and direct substitution guidance against qualified alternatives.

Technical Context

The SNJ54AS241AJ implements two independent 4-bit noninverting buffer sections, each with separate active-low output-enable (1OE, 2OE) inputs controlling four outputs (1Y1–1Y4 and 2Y1–2Y4). Its TTL-compatible inputs and totem-pole outputs support direct interfacing with legacy 5 V logic families.

It uses bipolar AS (Advanced Schottky) technology, delivering faster propagation delays (t_PLH/t_PHL ≤ 9 ns at V_CC = 5 V, C_L = 50 pF) and higher drive strength than ALS variants, while maintaining full military temperature qualification and compatibility with standard 20-pin CDIP (J) packaging.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	4.5 V to 5.5 V - Ensures stable operation under regulated 5 V rail with ±10% tolerance in harsh environments.
I_OL (max)	48 mA - Enables direct drive of heavy capacitive loads or multiple TTL inputs without external buffering.
t_PLH/t_PHL	≤ 9 ns - Supports high-speed address or clock distribution in real-time military avionics and test equipment.
Operating Temp	−55°C to 125°C - Qualified for deployment in extended-range aerospace, defense, and downhole industrial systems.
Output Type	3-State Totem-Pole - Allows bidirectional bus sharing and prevents contention when multiple drivers share a common line.
Input Structure	pnp-based - Reduces input DC loading (I_IL ≤ −1 mA), minimizing power draw on upstream logic stages.
V_OH (min)	2.4 V at I_OH = −12 mA - Guarantees robust high-level noise margin (>0.4 V) when driving TTL/AS loads.

Pinout & Package

Ceramic Dual-In-Line Package (CDIP), 20-pin, 300-mil body width, hermetically sealed, lead finish: SnPb (SNPB), MSL rating: N/A (non-reflowable).

Pin/Terminal	Circuit Role	Design Meaning
1, 19	1OE, 2OE	Active-low output-enable controls for Group 1 (pins 18,16,14,12) and Group 2 (pins 9,7,5,3) outputs.
2, 4, 6, 8	1A1–1A4	Noninverting input signals for first buffer group; directly routed to corresponding Y outputs when OE asserted.
3, 5, 7, 9	2Y4–2Y1	Noninverting outputs of second buffer group; driven only when 2OE = LOW.
12, 14, 16, 18	1Y1–1Y4	Noninverting outputs of first buffer group; high-impedance when 1OE = HIGH.
11, 13, 15, 17	2A1–2A4	Noninverting input signals for second buffer group; match pin order to output numbering (2A1 → 2Y1).
10	GND	Signal reference and power return for all internal circuitry; requires low-inductance grounding in high-speed layouts.
20	V_CC	+5 V supply input; bypassing with 0.1 µF ceramic capacitor near pin is mandatory for noise suppression.

Key Features

Feature	Design Value
Dual independent 3-state control	Separate 1OE and 2OE pins allow asynchronous enable/disable of two 4-bit data paths-critical for multiplexed address/data buses.
Military temperature qualification	Full −55°C to 125°C operation validated per MIL-PRF-38535, enabling use in flight control computers and hardened ground stations.
AS-series speed-performance	Propagation delay <9 ns and enable/disable times <12 ns ensure timing compliance in sub-100 MHz synchronous systems.
pnp input stage	Reduces input current draw (I_IL = −1 mA max), lowering fan-out loading on preceding logic and improving system-level power efficiency.
High-current 3-state outputs	48 mA sink capability supports direct interface to legacy TTL loads and eliminates need for discrete pull-up resistors or buffer stages.

Applications

Memory Address Buffering	Clock Distribution Network
Use Scenario: Driving 20-bit address bus in radiation-tolerant microprocessor subsystems used in satellite command modules. IC Role / Device Role / Timing Role: Noninverting buffer isolating CPU address outputs from high-capacitance backplane traces; dual OE enables dynamic bus partitioning during DMA cycles. Use Value: Prevents address skew and ensures setup/hold timing margins are maintained across −55°C to 125°C, even with 100+ pF trace capacitance.	Use Scenario: Distributing synchronized clock signals to multiple ASICs in phased-array radar signal processors. IC Role / Device Role / Timing Role: Low-skew clock driver with matched propagation delay across all eight outputs; 3-state capability allows hot-swap reconfiguration. Use Value: Delivers sub-10 ns channel-to-channel skew and 48 mA drive strength to overcome interconnect losses without added jitter.
Legacy Bus Interface Adapter	Test Equipment Signal Conditioning
Use Scenario: Interfacing modern FPGA-based controllers to vintage MIL-STD-1553B bus transceivers requiring TTL-level strobes and enables. IC Role / Device Role / Timing Role: Level-shifting and fan-out buffer translating 3.3 V FPGA outputs to robust 5 V TTL-compatible control lines. Use Value: Eliminates level-shifters and discrete buffers; pnp inputs tolerate FPGA I/O leakage while maintaining noise immunity.	Use Scenario: Generating precise stimulus waveforms in automated test equipment (ATE) for mixed-signal IC validation. IC Role / Device Role / Timing Role: High-fidelity digital pattern generator stage driving DUT control pins with fast edge rates and minimal overshoot. Use Value: Achieves <10 ns rise/fall times and 0.35 V VOL at 48 mA load-ensuring clean transitions into 50 Ω terminated test fixtures.

Memory Address Buffering

Clock Distribution Network

Use Scenario: Driving 20-bit address bus in radiation-tolerant microprocessor subsystems used in satellite command modules.

IC Role / Device Role / Timing Role: Noninverting buffer isolating CPU address outputs from high-capacitance backplane traces; dual OE enables dynamic bus partitioning during DMA cycles.

Use Value: Prevents address skew and ensures setup/hold timing margins are maintained across −55°C to 125°C, even with 100+ pF trace capacitance.

Use Scenario: Distributing synchronized clock signals to multiple ASICs in phased-array radar signal processors.

IC Role / Device Role / Timing Role: Low-skew clock driver with matched propagation delay across all eight outputs; 3-state capability allows hot-swap reconfiguration.

Use Value: Delivers sub-10 ns channel-to-channel skew and 48 mA drive strength to overcome interconnect losses without added jitter.

Legacy Bus Interface Adapter

Test Equipment Signal Conditioning

Use Scenario: Interfacing modern FPGA-based controllers to vintage MIL-STD-1553B bus transceivers requiring TTL-level strobes and enables.

IC Role / Device Role / Timing Role: Level-shifting and fan-out buffer translating 3.3 V FPGA outputs to robust 5 V TTL-compatible control lines.

Use Value: Eliminates level-shifters and discrete buffers; pnp inputs tolerate FPGA I/O leakage while maintaining noise immunity.

Use Scenario: Generating precise stimulus waveforms in automated test equipment (ATE) for mixed-signal IC validation.

IC Role / Device Role / Timing Role: High-fidelity digital pattern generator stage driving DUT control pins with fast edge rates and minimal overshoot.

Use Value: Achieves <10 ns rise/fall times and 0.35 V VOL at 48 mA load-ensuring clean transitions into 50 Ω terminated test fixtures.

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
SNJ54ALS241CJ	ALS technology: slower (t_PLH ≤ 31 ns), lower I_OL (24 mA), same pinout and temp range.	Suitable for cost-sensitive, lower-speed military designs where power and speed trade-offs favor ALS.	Select SNJ54ALS241CJ only if system timing budget allows ≥3× longer propagation delay and reduced drive strength is acceptable.
SN54AS241AJ	Identical electrical specs and package; differs only in part marking convention and procurement channel (non-JM prefix).	No functional difference; used interchangeably in new designs where TI's standard military ordering path is preferred.	SN54AS241AJ is functionally identical and available through standard TI channels; SNJ54AS241AJ is sourced via defense logistics agencies.

Compared with SNJ54AS241AJ, SNJ54ALS241CJ trades speed and drive for lower power (ICC ≤ 32 mA vs. 56 mA), while SN54AS241AJ offers identical performance with broader commercial/military supply chain access-making it ideal for dual-sourced programs.

Availability

SNJ54AS241AJ is available at Aetrix Electronics and suitable for aerospace vehicle control systems, defense electronics test platforms, and radiation-hardened embedded computing requiring stable component supply over extended product lifecycles.

Supply support for SNJ54AS241AJ 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 with over 60 years of analog and logic innovation, serving aerospace, defense, industrial, and automotive markets with high-reliability components.

The SNJ54AS241AJ belongs to TI's military-qualified Advanced Schottky (AS) logic family, engineered specifically for high-speed, high-drive 3-state buffering in mission-critical systems operating under extreme environmental stress.

FAQ

What is the maximum operating temperature range for SNJ54AS241AJ?

The SNJ54AS241AJ is fully characterized and guaranteed to operate from −55°C to 125°C. This military-grade temperature range is validated per MIL-PRF-38535 requirements and applies across all electrical parameters including propagation delay, output drive, and input thresholds-no derating is required within this span.

Does SNJ54AS241AJ support true bidirectional bus operation?

No, SNJ54AS241AJ is a unidirectional noninverting buffer. It has separate input (A) and output (Y) terminals with no internal feedback path. Bidirectional operation requires external control logic managing OE states and direction signals-SNJ54AS241AJ itself does not implement bus transceiver functionality.

Can SNJ54AS241AJ be used with 3.3 V logic inputs?

SNJ54AS241AJ inputs are TTL-compatible with V_IL = 0.8 V max and V_IH = 2.0 V min. While 3.3 V CMOS outputs typically exceed V_IH, direct connection risks excessive input current due to internal clamp diodes. A series resistor (≥1 kΩ) or level-shifter is recommended for reliable interfacing with 3.3 V systems.

What is the meaning of "J" in the SNJ54AS241AJ part number?

The "J" suffix in SNJ54AS241AJ denotes the Ceramic Dual-In-Line Package (CDIP) variant-20-pin, 300-mil width, hermetic ceramic construction with SnPb leads. It distinguishes this military-spec package from plastic DIP (N), SOIC (DW), or LCCC (FK) versions of the same logic function.

How does SNJ54AS241AJ differ from SN74AS241AN?

SNJ54AS241AJ is the military-qualified version (−55°C to 125°C, QML-38535 certified, CDIP package), while SN74AS241AN is the commercial version (0°C to 70°C, PDIP package, RoHS-compliant NiPdAu finish). Electrical specs are identical within their respective temperature ranges, but SNJ54AS241AJ undergoes additional screening and traceability protocols for defense use.

SNJ54AS241AJ 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:: -

SNJ54AS241AJ FAQ

1.How can I place an order for SNJ54AS241AJ through Aetrix?

Please submit a Request for Quotation (RFQ) for SNJ54AS241AJ 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 SNJ54AS241AJ reliable?

The price and inventory of SNJ54AS241AJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SNJ54AS241AJ is usually 5 days.

3.What payment methods are accepted for SNJ54AS241AJ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SNJ54AS241AJ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SNJ54AS241AJ?

SNJ54AS241AJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SNJ54AS241AJ 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 SNJ54AS241AJ?

For technical support, including SNJ54AS241AJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SNJ54AS241AJ requirements.

6.How does Aetrix verify that SNJ54AS241AJ is sourced from the original manufacturer or authorized distributors?

All SNJ54AS241AJ 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 SNJ54AS241AJ meets industry standards.

7.What is the process for return or replacement of SNJ54AS241AJ?

All SNJ54AS241AJ units undergo pre-shipment inspection (PSI). If there is an issue with SNJ54AS241AJ, 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 SNJ54AS241AJ part is unused and in its original packaging.

Return procedure for SNJ54AS241AJ:

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…