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Texas Instruments SNJ54LS367AJ

Name: SNJ54LS367AJ
Brand: Texas Instruments
SKU: SNJ54LS367AJ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SNJ54LS367AJ

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: -

Datasheet:: SNJ54LS367AJ.pdf

Description:: 54LS367A HEX BUS DRIVERS WITH 3-

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Product details

Overview

SNJ54LS367AJ from Texas Instruments is a military-grade hex buffer/line driver with three-state outputs, designed for high-reliability logic interfacing in aerospace and defense systems. It features dual 3-bit groups with independent output-enable controls, operates over –55°C to +125°C, supports TTL-compatible input thresholds, and delivers typical propagation delay of 15 ns at V_CC = 5 V.

For engineers reviewing the SNJ54LS367AJ datasheet, SNJ54LS367AJ pinout, SNJ54LS367AJ application, or SNJ54LS367AJ equivalent, this device is selected for bus driving, address/data latching, and level translation in radiation-tolerant or extended-temperature embedded control subsystems where deterministic timing and robust noise immunity are required.

Technical Context

The SNJ54LS367AJ implements two independent 3-bit non-inverting buffer sections, each with active-low output-enable (1OE, 2OE) controlling all three outputs in its group. Inputs are TTL-compatible with guaranteed 0.8 V max V_IL and 2.0 V min V_IH, and outputs drive ±8 mA loads while maintaining valid logic levels across the full military temperature range.

Its open-collector–compatible three-state outputs allow wired-OR bus configurations and support hot-swap isolation when enabled. The device uses bipolar Schottky TTL process technology, ensuring stable DC parameters and predictable AC performance without latch-up risk under normal operating conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Family	LS-TTL - ensures compatibility with legacy 74LS-series systems and predictable fanout behavior.
Supply Voltage	4.5 V to 5.5 V - supports operation under regulated 5 V rails with ±10% tolerance, critical for avionics power domains.
Propagation Delay	15 ns max (t_PLH/t_PHL) - enables reliable timing in 33 MHz synchronous bus interfaces with margin.
Output Drive	–15 mA sink / +0.4 mA source - sufficient to drive 10 LS-TTL loads or terminate unterminated stubs on backplanes.
Operating Temperature	–55°C to +125°C - qualified per MIL-PRF-38535 Class B for deployment in engine compartments and space-qualified electronics.
Input Thresholds	V_IL ≤ 0.8 V, V_IH ≥ 2.0 V - guarantees noise margins >400 mV in electrically noisy military vehicle environments.

Pinout & Package

SNJ54LS367AJ is supplied in a 16-pin Ceramic Dual-In-Line Package (CDIP-J), hermetically sealed with tin-lead (SNPB) leads and rated for extended temperature operation. The package has 0.3-inch body width, 0.1-inch lead pitch, and meets MIL-STD-883 requirements for mechanical and environmental robustness.

Pin/Terminal	Circuit Role	Design Meaning
1	1Y1	Non-inverting output of first buffer in Group 1 - drives external load when 1OE is low.
2	1A1	Input to first buffer in Group 1 - accepts TTL-level signals; high impedance when 1OE is high.
3	1Y2	Non-inverting output of second buffer in Group 1 - independently controllable with 1OE.
4	1A2	Input to second buffer in Group 1 - electrically isolated from other groups but shares 1OE control.
5	1Y3	Non-inverting output of third buffer in Group 1 - completes 3-bit parallel drive capability.
6	1A3	Input to third buffer in Group 1 - supports simultaneous enable/disable of all three outputs in Group 1.
7	GND	Signal reference ground - must be connected to system ground plane with low-inductance path.
8	2A1	Input to first buffer in Group 2 - functionally identical to 1A1 but controlled by 2OE.
9	2Y1	Non-inverting output of first buffer in Group 2 - enables independent bus partitioning between groups.
10	2A2	Input to second buffer in Group 2 - allows separate data paths for dual-channel I/O expansion.
11	2Y2	Non-inverting output of second buffer in Group 2 - supports redundant or mirrored signal routing.
12	2A3	Input to third buffer in Group 2 - completes 3-bit parallel interface for second channel.
13	2Y3	Non-inverting output of third buffer in Group 2 - provides full 6-bit buffered output capability.
14	2OE	Active-low output-enable for Group 2 - high-impedance state isolates outputs during bus arbitration.
15	V_CC	+5 V supply - requires local 0.1 µF ceramic bypass capacitor placed within 5 mm of pin.
16	1OE	Active-low output-enable for Group 1 - enables hardware-selectable channel disable without software intervention.

Key Features

Feature	Design Value
Dual independent 3-bit groups	Allows segregated control of two data buses or address/data channels using separate OE pins - eliminates need for discrete gating logic.
Three-state outputs with TTL-compatible drive	Enables direct connection to shared backplane buses without external pull-ups or level shifters - reduces component count and layout complexity.
MIL-PRF-38535 Class B qualification	Guarantees screening, testing, and traceability per military standards - required for flight-critical and mission-essential subsystems.
Hermetic CDIP (J) package	Provides long-term reliability in high-humidity, high-vibration, and outgassing-sensitive environments such as satellites and jet engines.
–55°C to +125°C operation	Supports deployment in unheated avionics bays and engine-mounted controllers without thermal derating or forced cooling.

Applications

Avionics Data Bus Interface	Ground Vehicle Control Module
Use Scenario: Interfacing microcontroller GPIOs to ARINC 429 or MIL-STD-1553B transceiver address/data lines in flight management computers. IC Role / Device Role / Timing Role: Hex buffer isolates MCU pins from bus transceivers and provides current gain for reliable edge integrity across 2-meter harness runs. Use Value: Eliminates signal degradation due to capacitive loading and ensures setup/hold timing compliance at 1 Mbps bus rates.	Use Scenario: Driving solenoid control lines and sensor readback multiplexers in armored vehicle engine control units exposed to wide ambient swings. IC Role / Device Role / Timing Role: Three-state buffers manage shared diagnostic bus access between ECU master and multiple subsystem modules. Use Value: Enables hot-swap-safe bus arbitration and prevents contention-induced voltage spikes during module replacement.
Satellite Payload Power Sequencing	Tactical Radio Baseband Processing
Use Scenario: Controlling power-on sequencing of FPGA configuration memory, RF front-end bias supplies, and telemetry ADCs in LEO satellite payloads. IC Role / Device Role / Timing Role: SNJ54LS367AJ acts as a hardened logic-level shifter and enable distributor across isolated power domains. Use Value: Ensures deterministic startup order with <15 ns skew between six independent enable signals under radiation exposure.	Use Scenario: Buffering baseband I/Q data paths between DSP cores and high-speed DACs/ADCs in manpack and vehicular radios. IC Role / Device Role / Timing Role: Provides clean, slew-controlled signal routing while supporting simultaneous enable of analog front-end channels. Use Value: Maintains inter-channel phase coherence and minimizes jitter accumulation in 20+ Msps sampling paths.

Avionics Data Bus Interface

Ground Vehicle Control Module

Use Scenario: Interfacing microcontroller GPIOs to ARINC 429 or MIL-STD-1553B transceiver address/data lines in flight management computers.

IC Role / Device Role / Timing Role: Hex buffer isolates MCU pins from bus transceivers and provides current gain for reliable edge integrity across 2-meter harness runs.

Use Value: Eliminates signal degradation due to capacitive loading and ensures setup/hold timing compliance at 1 Mbps bus rates.

Use Scenario: Driving solenoid control lines and sensor readback multiplexers in armored vehicle engine control units exposed to wide ambient swings.

IC Role / Device Role / Timing Role: Three-state buffers manage shared diagnostic bus access between ECU master and multiple subsystem modules.

Use Value: Enables hot-swap-safe bus arbitration and prevents contention-induced voltage spikes during module replacement.

Satellite Payload Power Sequencing

Tactical Radio Baseband Processing

Use Scenario: Controlling power-on sequencing of FPGA configuration memory, RF front-end bias supplies, and telemetry ADCs in LEO satellite payloads.

IC Role / Device Role / Timing Role: SNJ54LS367AJ acts as a hardened logic-level shifter and enable distributor across isolated power domains.

Use Value: Ensures deterministic startup order with <15 ns skew between six independent enable signals under radiation exposure.

Use Scenario: Buffering baseband I/Q data paths between DSP cores and high-speed DACs/ADCs in manpack and vehicular radios.

IC Role / Device Role / Timing Role: Provides clean, slew-controlled signal routing while supporting simultaneous enable of analog front-end channels.

Use Value: Maintains inter-channel phase coherence and minimizes jitter accumulation in 20+ Msps sampling paths.

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex buffer/line driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN54LS367AJ	Identical electrical specs and pinout; differs only in part marking convention and minor packaging documentation - fully interchangeable in hardware design.	No functional difference; used interchangeably in DoD procurement contracts where either part number is authorized.	Select SN54LS367AJ if sourcing through standard defense logistics channels requiring legacy NSN mapping.
SNJ54LS366AJ	Inverting output logic (Y = NOT A) versus non-inverting (Y = A) in SNJ54LS367AJ - requires logic inversion in upstream firmware or gate-level redesign.	Used where active-low signaling or polarity inversion is required in bus arbitration or interrupt handling circuits.	Choose SNJ54LS366AJ only when inverting behavior aligns with system-level signal protocol; otherwise avoid due to functional mismatch.

Compared with SN54LS367AJ and SNJ54LS366AJ, SNJ54LS367AJ offers identical military qualification and timing but avoids unnecessary logic inversion, simplifying timing analysis and reducing risk of signal polarity errors in safety-critical control paths.

Availability

SNJ54LS367AJ is available at Aetrix Electronics and suitable for avionics data bus interface, ground vehicle control module, satellite payload power sequencing, and tactical radio baseband processing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SNJ54LS367AJ 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, aerospace, and defense markets.

The SNJ54LS367AJ belongs to TI's military-grade 54LS logic family, engineered specifically for mission-critical systems demanding guaranteed performance across extreme temperatures, mechanical stress, and electromagnetic interference environments.

FAQ

What is the maximum clock frequency supported by SNJ54LS367AJ?

SNJ54LS367AJ is not a clocked device - it is a combinational buffer with no internal clock. Its usable data rate depends on propagation delay and system timing margins. With a typical t_PD of 15 ns, SNJ54LS367AJ supports reliable operation in asynchronous bus interfaces up to approximately 33 MHz, assuming adequate setup/hold time and trace length management.

Is SNJ54LS367AJ RoHS compliant?

No, SNJ54LS367AJ uses tin-lead (SNPB) lead finish and is explicitly marked "No" for RoHS compliance in TI's packaging documentation. It is intended for military and aerospace applications where leaded finishes are mandated for solder joint reliability and thermal cycling endurance.

Can SNJ54LS367AJ be used in place of SN74LS367AN?

SNJ54LS367AJ and SN74LS367AN share identical logic function and pinout but differ in qualification: SNJ54LS367AJ is MIL-PRF-38535 Class B qualified for –55°C to +125°C operation, while SN74LS367AN is commercial-grade (0°C to +70°C). Substitution is permissible only if the application requires extended temperature and military screening - otherwise, SN74LS367AN suffices for benign environments.

What is the purpose of the two separate output-enable pins on SNJ54LS367AJ?

The dual output-enable pins (1OE and 2OE) allow independent control of the two 3-bit buffer groups. This enables selective activation of data paths - for example, enabling Group 1 for address lines while holding Group 2 in high-impedance during memory read cycles - improving bus contention management and reducing dynamic power in multi-peripheral systems.

Does SNJ54LS367AJ require external pull-up resistors on its outputs?

No, SNJ54LS367AJ features totem-pole (push-pull) outputs, not open-collector. Its outputs actively drive both HIGH and LOW states, eliminating the need for external pull-ups. Pull-ups would cause contention and excessive current draw when the output is driven LOW.

SNJ54LS367AJ 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:: -

SNJ54LS367AJ FAQ

1.How can I place an order for SNJ54LS367AJ through Aetrix?

Please submit a Request for Quotation (RFQ) for SNJ54LS367AJ 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 SNJ54LS367AJ reliable?

The price and inventory of SNJ54LS367AJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SNJ54LS367AJ is usually 5 days.

3.What payment methods are accepted for SNJ54LS367AJ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SNJ54LS367AJ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SNJ54LS367AJ?

SNJ54LS367AJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SNJ54LS367AJ 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 SNJ54LS367AJ?

For technical support, including SNJ54LS367AJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SNJ54LS367AJ requirements.

6.How does Aetrix verify that SNJ54LS367AJ is sourced from the original manufacturer or authorized distributors?

All SNJ54LS367AJ 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 SNJ54LS367AJ meets industry standards.

7.What is the process for return or replacement of SNJ54LS367AJ?

All SNJ54LS367AJ units undergo pre-shipment inspection (PSI). If there is an issue with SNJ54LS367AJ, 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 SNJ54LS367AJ part is unused and in its original packaging.

Return procedure for SNJ54LS367AJ:

1.Submit a request within 90 days.

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

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