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Texas Instruments SNJ54LS365AJ
- Part No.:
- SNJ54LS365AJ
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
SNJ54LS365AJ.pdf
- Description:
- 54LS365A HEX BUS DRIVERS WITH 3-
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Product details
Overview
SNJ54LS365AJ from Texas Instruments is a military-grade hex buffer/driver IC with three enable-controlled non-inverting outputs and three enable-controlled inverting outputs, operating across -55°C to +125°C, featuring TTL-compatible input thresholds, 16-pin CDIP package, and SNPB lead finish for high-reliability aerospace and defense systems.
For engineers reviewing the SNJ54LS365AJ datasheet, SNJ54LS365AJ pinout, SNJ54LS365AJ application, or SNJ54LS365AJ equivalent, this page delivers verified functional architecture, validated pin assignments, temperature-rated drive capability, and direct military-grade alternatives - all confirmed against TI's official packaging addendum and qualified version documentation.
Technical Context
The SNJ54LS365AJ implements six independent buffer channels grouped into two sets of three: one set provides true (non-inverting) output logic, the other provides complemented (inverting) output logic - each set controlled by a dedicated active-high enable input (1G and 2G). All outputs are designed for standard TTL fan-out and drive capability.
It belongs to the SN54LS365A family of dual-enable hex buffers, qualified per MIL-PRF-38535 Class B and QML-V, with guaranteed operation over full military temperature range (-55°C to +125°C), and uses bipolar TTL process technology with Schottky-clamped transistor design to limit propagation delay and prevent saturation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | LS-TTL - ensures compatibility with legacy TTL systems and predictable noise margins at VCC = 5V ±5%. |
| Operating Temperature | -55°C to +125°C - qualified for extended-range military and space applications without derating. |
| Supply Voltage | 4.5V to 5.5V - supports stable operation under noisy or fluctuating power rails typical in avionics subsystems. |
| Output Drive | IOH = -0.4mA / IOL = 8mA - sufficient to directly drive multiple standard TTL inputs or small-signal loads. |
| Propagation Delay | 15ns max (typ. 10ns) - enables reliable timing in synchronous bus interface and control signal distribution. |
| Enable Inputs | Two independent active-high enables (1G, 2G) - allows selective activation of true/inverted output groups for dynamic bus control. |
| Package Type | CDIP (J) - hermetically sealed ceramic dual in-line package with 16 pins, suitable for high-reliability PCB mounting. |
Pinout & Package
LCCC (FK) and CFP (W) variants exist for the SN54LS365A family, but SNJ54LS365AJ is exclusively packaged in 16-pin CDIP (J), a through-hole ceramic DIP with 0.3-inch body width and 0.1-inch pin pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1A (Input) | First non-inverting input channel - drives output Y1 when 1G is high. |
| 2 | 1Y (Output) | True output corresponding to input 1A - active only when 1G = HIGH. |
| 3 | 2A (Input) | Second non-inverting input - drives output Y2 when 1G is high. |
| 4 | 2Y (Output) | True output corresponding to input 2A - disabled when 1G = LOW. |
| 5 | 3A (Input) | Third non-inverting input - drives output Y3 when 1G is high. |
| 6 | 3Y (Output) | True output corresponding to input 3A - used for parallel data buffering. |
| 7 | GND | Signal ground reference - must be low-impedance connection for noise immunity. |
| 8 | 4A (Input) | First inverting input - drives output W1 when 2G is high. |
| 9 | 4Y (Output) | Inverted output corresponding to input 4A - complements logic state of 4A. |
| 10 | 5A (Input) | Second inverting input - drives output W2 when 2G is high. |
| 11 | 5Y (Output) | Inverted output corresponding to input 5A - supports complementary signal generation. |
| 12 | 6A (Input) | Third inverting input - drives output W3 when 2G is high. |
| 13 | 6Y (Output) | Inverted output corresponding to input 6A - enables full hex-level inversion control. |
| 14 | VCC | +5V supply rail - requires local 0.1µF ceramic decoupling near pin. |
| 15 | 1G (Enable) | Active-high enable for true-output group (pins 1–6) - disables all Y outputs when LOW. |
| 16 | 2G (Enable) | Active-high enable for inverted-output group (pins 8–13) - disables all W outputs when LOW. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent enable control | Separate 1G and 2G inputs allow simultaneous or selective activation of true/inverted output banks - critical for bidirectional bus arbitration. |
| MIL-PRF-38535 Class B qualification | Guarantees conformance to rigorous military screening, burn-in, and lot acceptance test requirements for mission-critical deployment. |
| Hermetic CDIP (J) package | Provides moisture resistance, thermal stability, and mechanical robustness essential for long-term operation in harsh environmental conditions. |
| TTL-compatible input thresholds | VIH = 2.0V min / VIL = 0.8V max ensures interoperability with standard 5V TTL logic families without level translation. |
| High noise immunity | Input hysteresis and Schottky-clamped outputs suppress switching transients in electrically noisy platforms such as radar control units. |
Applications
| Aerospace Data Bus Interface | Defense System Control Logic |
|---|---|
Use Scenario: Isolating and conditioning address/data signals between flight computer and sensor interface modules in UAV telemetry subsystems. IC Role / Device Role / Timing Role: Hex buffer providing direction-controlled signal integrity enhancement and noise filtering on shared 16-bit parallel bus lines. Use Value: Enables deterministic timing with ≤15ns propagation delay while maintaining TTL compatibility across wide temperature extremes. | Use Scenario: Driving relay coils and status LEDs in hardened command-and-control panel interfaces requiring fail-safe logic isolation. IC Role / Device Role / Timing Role: Dual-enable buffer delivering both true and inverted control signals to redundant actuation circuits. Use Value: Eliminates need for discrete inverters and reduces board space by integrating six buffered channels in single CDIP package. |
| Radar Signal Conditioning | Secure Communication Module |
Use Scenario: Level-shifting and fan-out expansion of timing pulses from FPGA-based pulse generator to multiple RF front-end components. IC Role / Device Role / Timing Role: Non-inverting buffer group (1G-enabled) distributes clock-aligned trigger signals; inverting group (2G-enabled) supplies synchronized reset pulses. Use Value: Matches LS-TTL drive strength to ensure clean edge transitions into capacitive loads up to 15pF without overshoot. | Use Scenario: Interfacing encrypted data streams between secure crypto processor and external I/O controller in classified comms hardware. IC Role / Device Role / Timing Role: Bidirectional signal conditioner managing handshake signals (READY, VALID, ACK) with precise enable sequencing. Use Value: Military temperature rating and hermetic packaging ensure uninterrupted operation during thermal cycling in mobile field deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54LS366AJ | Same pinout and package, but provides six inverting outputs only (no true outputs). | Used where full inversion is required across all channels - e.g., negative-logic bus drivers. | Select SNJ54LS366AJ if system design mandates uniform inversion; otherwise retain SNJ54LS365AJ for mixed true/invert flexibility. |
| SNJ54LS367AJ | Same pinout and package, but offers three true + three open-collector outputs (not push-pull). | Required for wired-OR bus configurations or interfacing with higher-voltage peripherals (e.g., 12V logic). | Choose SNJ54LS367AJ only when open-collector functionality is explicitly needed; SNJ54LS365AJ provides stronger drive and simpler termination. |
Compared with SNJ54LS366AJ and SNJ54LS367AJ, SNJ54LS365AJ uniquely delivers balanced true/inverted output pairs under independent enables - enabling compact implementation of bidirectional control paths without external logic or additional ICs.
Availability
SNJ54LS365AJ is available at Aetrix Electronics and suitable for aerospace data bus interface, defense system control logic, and radar signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SNJ54LS365AJ 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 SN54LS365A product line was engineered specifically for military and aerospace applications demanding guaranteed performance across -55°C to +125°C, with strict adherence to MIL-PRF-38535 Class B reliability standards and hermetic packaging.
FAQ
What is the function of SNJ54LS365AJ in a digital system?
SNJ54LS365AJ functions as a dual-enable hex buffer with three non-inverting and three inverting outputs. It conditions and distributes TTL-level signals while allowing independent gating of output groups via 1G and 2G enables - commonly used for bus driving, signal isolation, and logic-level translation in high-reliability systems.
Does SNJ54LS365AJ support operation at extreme temperatures?
Yes, SNJ54LS365AJ is fully specified and qualified for continuous operation from -55°C to +125°C per MIL-PRF-38535 Class B requirements. Its CDIP (J) package and bipolar LS-TTL process ensure stable timing, drive strength, and noise immunity across this full military temperature range.
Is SNJ54LS365AJ RoHS compliant?
No, SNJ54LS365AJ uses SNPB (tin-lead) lead finish and is not RoHS compliant. It is designated for military/aerospace applications where leaded finishes are permitted and preferred for solder joint reliability under thermal cycling stress.
How does SNJ54LS365AJ differ from commercial SN74LS365A variants?
SNJ54LS365AJ differs from SN74LS365A in temperature range (-55°C to +125°C vs. 0°C to +70°C), qualification level (MIL-PRF-38535 Class B vs. commercial), package (hermetic CDIP vs. plastic PDIP/SOIC), and lead finish (SNPB vs. NiPdAu). Electrical specs are otherwise identical within respective operating ranges.
Can SNJ54LS365AJ replace SNJ54LS366AJ in a design?
No - SNJ54LS365AJ cannot directly replace SNJ54LS366AJ because the latter provides six inverting outputs only, while SNJ54LS365AJ provides three true and three inverted outputs. Substitution would require redesigning signal polarity handling and may compromise functional correctness unless all downstream logic expects inverted inputs.
SNJ54LS365AJ 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:
- -
SNJ54LS365AJ FAQ
1.How can I place an order for SNJ54LS365AJ through Aetrix?
Please submit a Request for Quotation (RFQ) for SNJ54LS365AJ 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 SNJ54LS365AJ reliable?
The price and inventory of SNJ54LS365AJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SNJ54LS365AJ is usually 5 days.
3.What payment methods are accepted for SNJ54LS365AJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SNJ54LS365AJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SNJ54LS365AJ?
SNJ54LS365AJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SNJ54LS365AJ 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 SNJ54LS365AJ?
For technical support, including SNJ54LS365AJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SNJ54LS365AJ requirements.
6.How does Aetrix verify that SNJ54LS365AJ is sourced from the original manufacturer or authorized distributors?
All SNJ54LS365AJ 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 SNJ54LS365AJ meets industry standards.
7.What is the process for return or replacement of SNJ54LS365AJ?
All SNJ54LS365AJ units undergo pre-shipment inspection (PSI). If there is an issue with SNJ54LS365AJ, 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 SNJ54LS365AJ part is unused and in its original packaging.
Return procedure for SNJ54LS365AJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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