SNJ54ALS139J Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The SNJ54ALS139J is a dual 2-to-4 line decoder/demultiplexer from Texas Instruments in the ALS logic family, providing two independent 2-line to 4-line decoding functions with active-low outputs and individual enable pins. It handles a 50pF load capacitance and is housed in a 16-pin ceramic DIP package for high-reliability address decoding in military-grade digital systems.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SNJ54ALS139J Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.2000(MOQ 1)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual independent 2-to-4 line decoder/demultiplexer in one package
- Active-low outputs with individual enable control per decoder section
- ALS logic family for low-power Schottky TTL performance
- 50pF load capacitance for standard bus interface compatibility
- 16-pin ceramic DIP (CDIP) package for hermetic high-reliability use
- Military 54-series qualification for extended temperature operation
Applications
The SNJ54ALS139J is used in memory address decoding, chip select generation, and data routing in military-grade and high-reliability digital systems. It is commonly deployed in processor systems for selecting among multiple peripheral devices, in programmable logic designs for decoding control signals, and in industrial equipment requiring reliable 2-to-4 binary decoding over extended temperature ranges.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | ALS |
| Input Conditioning | STANDARD |
| JESD-30 Code | R-GDIP-T16 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | 2-LINE TO 4-LINE DECODER |
| Max I(ol) | 0.004A |
| Number of Bits | 4 |
| Number of Functions | 2 |
| Output Characteristics | OPEN-COLLECTOR |
| Output Polarity | INVERTED |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 13mA |
| Prop. Delay@Nom-Sup | 14ns |
| Propagation Delay (tpd) | 17ns |
| Qualification Status | Not Qualified |
| 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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many decoders does the SNJ54ALS139J contain?
The SNJ54ALS139J contains two independent 2-to-4 line decoders, each with its own 2-bit address input, 4-bit active-low output, and individual active-low enable input. The dual configuration allows two separate decoding functions to be implemented in a single 16-pin package, reducing component count in address decoding and chip select generation circuits.
What logic family does the SNJ54ALS139J belong to?
The SNJ54ALS139J belongs to the ALS (Advanced Low-Power Schottky TTL) logic family. ALS devices provide lower power consumption than standard LS-TTL while maintaining comparable switching speed, making them well suited for battery-backed systems and power-sensitive digital designs where TTL-compatible logic is required.
What is the military 54-series designation on the SNJ54ALS139J?
The '54' prefix designates the SNJ54ALS139J as a military-grade device, meaning it is tested and qualified to operate over the full military temperature range of -55°C to +125°C. The 54-series also undergoes additional screening for vibration, shock, and environmental stress, making it suitable for defense avionics, radar systems, and space-grade electronics.
What package does the SNJ54ALS139J use?
The SNJ54ALS139J is housed in a 16-pin ceramic DIP (CDIP) package designated by JESD-30 code R-GDIP-T16. The hermetically sealed ceramic package provides excellent moisture resistance and mechanical ruggedness for use in military and aerospace applications where long-term reliability in harsh environments is required.
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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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| 1+ | $6.3000 | $6.30 |
| 3+ | $4.2000 | $12.60 |
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