SNJ54ALS20AJ Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
SNJ54ALS20AJ is a dual 4-input positive NAND gate by Texas Instruments, part of the military-grade SNJ54 ALS bipolar logic series, housed in a 14-pin ceramic DIP package rated for -55°C to +125°C operation. Key specs: 2 independent 4-input NAND gates, 4.5V to 5.5V supply, 0.4mA output sink current. Available in stock worldwide.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- SNJ54ALS20AJ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual 4-input positive NAND gate in military-grade 14-pin ceramic DIP package
- ALS (Advanced Low-power Schottky) bipolar logic family for high-speed TTL-compatible operation
- Wide 4.5V to 5.5V supply range for compatibility with regulated 5V bipolar logic systems
- Military temperature rating from -55°C to +125°C in hermetic ceramic CDIP enclosure
- RoHS-compliant lead-free construction with YTEOL of 15 years for sustained long-term availability
Applications
The SNJ54ALS20AJ is used in military digital logic systems for wide-input NAND gate functions in control logic, address decoding, and interrupt masking circuits. Its 4-input configuration reduces gate count in designs requiring multi-condition AND logic with active-low output, and the ceramic CDIP packaging provides the environmental hermeticity required for defense avionics, space-qualified electronics, and military ground equipment.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | LG_MAX |
| Family | ALS |
| JESD-30 Code | R-GDIP-T14 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | NAND GATE |
| Max I(ol) | 0.0004A |
| Number of Functions | 2 |
| Number of Inputs | 4 |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 1.5mA |
| Prop. Delay@Nom-Sup | 12.5ns |
| Propagation Delay (tpd) | 11ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Screening Level | MIL-PRF-38535 |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | TTL |
| Temperature Grade | MILITARY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SNJ54ALS20AJ:
Frequently Asked Questions
What logic function does the SNJ54ALS20AJ implement?
The SNJ54ALS20AJ implements two independent 4-input positive NAND gates. Each gate outputs a logic low only when all four inputs are simultaneously at logic high; if any input is at logic low the output is logic high. The dual 4-input NAND configuration is useful for building 4-condition detection logic, wide fan-in control gates, and programmable logic array emulation.
What makes the SNJ54ALS20AJ different from commercial SN74ALS20A variants?
The SNJ54 prefix indicates military-grade qualification with ceramic dual in-line package (CDIP) construction and a temperature rating of -55°C to +125°C, compared to the commercial SN74 variants typically rated for 0°C to +70°C or -40°C to +85°C in plastic PDIP. The military variant undergoes additional screening and qualification testing per MIL-PRF-38535 or equivalent standards for defense applications.
What is the output sink current of the SNJ54ALS20AJ?
The SNJ54ALS20AJ has a maximum output sink current (I(ol)) of 0.4mA (0.0004A), which is lower than many ALS devices due to its 4-input wide gate architecture. This output drive level is compatible with standard ALS and LS TTL load requirements and is sufficient for driving typical gate inputs in cascaded logic networks.
Is the SNJ54ALS20AJ available for long-term supply programs?
Yes, the SNJ54ALS20AJ has a YTEOL (Years To End of Life) value of 15 years, confirming active production is planned to continue for approximately 15 more years from the current date. Texas Instruments supports this device in the SNJ54 military series, making it suitable for defense programs requiring long-term component supply commitments and lifetime buy opportunities.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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