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Texas Instruments SNJ54ALS08J
- Part No.:
- SNJ54ALS08J
- Manufacturer:
- Texas Instruments
- Category:
- Gates and Inverters
- Package:
- 14-CDIP (0.300", 7.62mm)
- Datasheet:
-
SNJ54ALS08J.pdf
- Description:
- IC GATE AND 4CH 2-INP 14CDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,377
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Product details
Overview
SNJ54ALS08J from Texas Instruments is a military-grade quad 2-input positive-AND gate IC operating across −55°C to 125°C, featuring 14-pin CDIP (J) ceramic package, 2 ns minimum propagation delay (tPLH), 4 mA low-level output drive, and TTL-compatible input thresholds (VIH = 2 V, VIL = 0.8 V). It performs Boolean Y = A • B logic in digital control, bus gating, and discrete logic subsystems for aerospace and defense systems.
For engineers reviewing the SNJ54ALS08J datasheet, SNJ54ALS08J pinout, SNJ54ALS08J application, or SNJ54ALS08J equivalent, this page delivers verified electrical specs, military temperature validation, package mechanical data, functional truth table, and direct alternatives with documented parameter divergence - all specific to the SNJ54ALS08J variant.
Technical Context
This device implements four independent, non-inverting AND gates using Advanced Low-Power Schottky (ALS) bipolar technology. Each gate accepts two TTL-level inputs and drives standard TTL loads with guaranteed VOH ≥ VCC − 2 V and VOL ≤ 0.4 V at IOL = 4 mA.
It is fully characterized for the extended military temperature range (−55°C to 125°C) and specified for VCC = 4.5 V to 5.5 V operation. Input clamp voltage (VIK = −1.5 V) and high noise immunity (VIL = 0.8 V, VIH = 2 V) support robust signal integrity in noisy avionics and ground vehicle environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - Ensures compatibility with regulated 5 V military power rails and tolerance against supply droop. |
| Propagation Delay (tPLH/tPHL) | 2–14 ns - Guarantees sub-15 ns timing for synchronous logic interfacing in real-time control loops. |
| IOL / IOH | 4 mA / −0.4 mA - Drives up to 10 standard TTL loads without external buffering in distributed logic networks. |
| VIH / VIL | 2 V / 0.8 V - Provides 0.4 V noise margin under worst-case conditions across full temperature range. |
| Operating Temperature | −55°C to 125°C - Qualified per MIL-PRF-38535 for use in uncontrolled environmental enclosures and engine bays. |
| Input Clamp Voltage (VIK) | −1.5 V - Protects inputs from negative transients during hot-swap or ESD events without external diodes. |
| Power Dissipation (ICCL) | 2.2–4 mA typical - Enables low-static-power logic partitioning in thermally constrained modules. |
Pinout & Package
Ceramic Dual-In-Line Package (CDIP), 14-pin, hermetically sealed, 300-mil body width, 5.08 mm max height, compliant with MIL-STD-1835 GDIP1-T14.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 1B / 2A, 2B / 3A, 3B / 4A, 4B | Input terminals for Gates 1–4 | Dedicated TTL-compatible inputs; no internal sharing - enables independent gate enable/disable via external logic. |
| 1Y, 2Y, 3Y, 4Y | Output terminals for Gates 1–4 | Active-high totem-pole outputs; capable of sourcing −0.4 mA or sinking 4 mA while maintaining valid logic levels. |
| 7 | GND | Ground reference for all internal circuitry and output stage return path. |
| 14 | VCC | Positive supply rail connection; decoupling capacitor placement adjacent to Pin 14 is required for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Military temperature qualification | Tested and rated over −55°C to 125°C per MIL-PRF-38535, enabling deployment in airborne, space, and ground vehicle electronics without derating. |
| ALS process technology | Delivers 2× speed improvement over standard LS TTL while reducing power consumption by ~30% versus SN54LS08. |
| Input clamping diodes | Integrated VIK = −1.5 V clamps protect against negative overshoot during signal transitions or cable discharge events. |
| TTL-compatible interface | Direct drop-in replacement for SN5408/SN54LS08 in legacy designs - matches VIH/VIL, VOH/VOL, and fanout specifications. |
| Hermetic ceramic packaging | CDIP (J) package provides moisture resistance, long-term reliability, and immunity to outgassing in vacuum or high-humidity environments. |
Applications
| Avionics Data Bus Gating | Missile Guidance Logic Interface |
|---|---|
|
Use Scenario: Isolating sensor data paths on MIL-STD-1553B remote terminal interfaces during mode switching. IC Role / Device Role / Timing Role: Quad AND gate enables/disables four parallel data lanes synchronously using a single mode-select signal. Use Value: Eliminates need for discrete transistor arrays or programmable logic; meets <15 ns setup/hold timing budgets in flight-critical subsystems. |
Use Scenario: Enabling analog-to-digital converter (ADC) sample strobes only when guidance processor asserts valid command window. IC Role / Device Role / Timing Role: Acts as precision timing gate between processor GPIO and ADC CONVST line, preventing spurious conversions. Use Value: Leverages guaranteed tPHL ≤12.5 ns to meet 20 MHz sampling window alignment requirements under thermal stress. |
| Secure Communication Module Control | Radar Signal Processing Subsystem |
|
Use Scenario: Controlling encryption key loading sequence in FIPS-140-2 Level 3 cryptographic modules. IC Role / Device Role / Timing Role: Validates dual independent enable signals before releasing key material to AES engine registers. Use Value: Hardware-enforced AND logic prevents single-point failure from compromising key integrity - certified for Class III physical security. |
Use Scenario: Synchronizing pulse-Doppler radar IF chain components (mixers, filters, AGC) during transmit/receive mode transitions. IC Role / Device Role / Timing Role: Generates clean, glitch-free enable strobes for RF front-end bias control based on master timing generator outputs. Use Value: Sub-15 ns propagation delay ensures <500 ps skew across four parallel RF sections, preserving phase coherence in beamforming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input AND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN54AS08J | Higher speed (tPLH/tPHL = 1–6.5 ns), higher ICC (14.9–24 mA), lower noise margin (VIL = 0.8 V but IIL = −0.5 mA). | Better suited for high-frequency clock distribution where propagation delay dominates over power budget. | Select SN54AS08J only when system timing closure requires <7 ns gate delay and thermal management supports higher dissipation. |
| SNJ54ALS08FK | LCCC-20 ceramic package (20-pin), same ALS logic family, identical electrical specs, but different pinout and footprint. | Used where board space is constrained and surface-mount assembly is preferred over through-hole CDIP. | Choose SNJ54ALS08FK for automated SMT production; requires PCB redesign due to incompatible pin mapping and land pattern. |
Compared with SN54AS08J, SNJ54ALS08J trades 3× lower power for 2× longer propagation delay - ideal for thermally limited avionics bays. Versus SNJ54ALS08FK, it retains identical logic behavior but demands through-hole assembly and offers superior mechanical ruggedness in high-vibration platforms.
Availability
SNJ54ALS08J is available at Aetrix Electronics and suitable for avionics data bus gating, missile guidance logic interface, secure communication module control, and radar signal processing subsystems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SNJ54ALS08J 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 founded in 1930, specializing in analog, embedded processing, and high-reliability components for industrial, automotive, aerospace, and defense markets.
SNJ54ALS08J belongs to TI's military-grade ALS logic family, designed specifically for high-integrity digital control in mission-critical systems where extended temperature operation, hermetic packaging, and MIL-PRF-38535 conformance are mandatory.
FAQ
What is the maximum supply voltage rating for SNJ54ALS08J?
The absolute maximum supply voltage (VCC) for SNJ54ALS08J is 7 V, as specified in the Absolute Maximum Ratings table. Operation above 5.5 V - the upper limit of the recommended range - risks permanent damage and violates MIL-PRF-38535 qualification limits. Designers must ensure transient suppression on the 5 V rail to prevent excursions beyond 5.5 V during load dump or coupling events. SNJ54ALS08J is not rated for sustained 7 V operation.
Does SNJ54ALS08J support 3.3 V logic interfacing?
No, SNJ54ALS08J does not support direct 3.3 V logic interfacing. Its input thresholds (VIH = 2 V, VIL = 0.8 V) and output swing (VOH ≥ VCC − 2 V, VOL ≤ 0.4 V) are defined only for VCC = 4.5–5.5 V operation. Driving it from 3.3 V CMOS outputs may result in marginal VIH margin, and connecting its 5 V outputs to 3.3 V inputs risks overvoltage damage unless level-shifting circuitry is used. SNJ54ALS08J is strictly a 5 V TTL-family device.
Is SNJ54ALS08J RoHS-compliant?
No, SNJ54ALS08J is not RoHS-compliant. Per TI's Package Option Addendum, its lead finish is SNPB (tin-lead), and RoHS status is explicitly marked "No". This reflects its heritage as a military-specification part manufactured under QML Class V or QML Class Q processes, where leaded finishes are retained for solder joint reliability in high-reliability, high-temperature, and high-vibration applications.
What is the meaning of "J" in SNJ54ALS08J?
The "J" suffix in SNJ54ALS08J denotes the Ceramic Dual-In-Line Package (CDIP) variant with 14 pins and 300-mil width, per TI's standard packaging nomenclature. It distinguishes this hermetically sealed, through-hole military-grade version from plastic DIP (N), SOIC (D), or LCCC (FK) variants. The "J" package is qualified to MIL-STD-1835 GDIP1-T14 and features glass-frit-sealed ceramic construction.
How does SNJ54ALS08J differ from commercial SN74ALS08N?
SNJ54ALS08J differs from SN74ALS08N in three critical dimensions: temperature range (−55°C to 125°C vs. 0°C to 70°C), package (hermetic CDIP-J vs. plastic PDIP-N), and qualification (MIL-PRF-38535 QML-certified vs. commercial catalog). Electrically, both share identical ALS logic characteristics, but SNJ54ALS08J undergoes additional screening including burn-in, temperature cycling, and radiation hardness assurance - making it suitable for flight hardware where SN74ALS08N is not approved.
SNJ54ALS08J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54ALS
- Package/Case:
- 14-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Logic Type:
- AND Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 4 mA
- Current - Output High, Low:
- 400µA, 4mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 14ns @ 5V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-CDIP
SNJ54ALS08J FAQ
1.How can I place an order for SNJ54ALS08J through Aetrix?
Please submit a Request for Quotation (RFQ) for SNJ54ALS08J 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 SNJ54ALS08J reliable?
The price and inventory of SNJ54ALS08J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SNJ54ALS08J is usually 5 days.
3.What payment methods are accepted for SNJ54ALS08J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SNJ54ALS08J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SNJ54ALS08J?
SNJ54ALS08J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SNJ54ALS08J 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 SNJ54ALS08J?
For technical support, including SNJ54ALS08J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SNJ54ALS08J requirements.
6.How does Aetrix verify that SNJ54ALS08J is sourced from the original manufacturer or authorized distributors?
All SNJ54ALS08J 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 SNJ54ALS08J meets industry standards.
7.What is the process for return or replacement of SNJ54ALS08J?
All SNJ54ALS08J units undergo pre-shipment inspection (PSI). If there is an issue with SNJ54ALS08J, 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 SNJ54ALS08J part is unused and in its original packaging.
Return procedure for SNJ54ALS08J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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