SNJ54AHCT138J Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The SNJ54AHCT138J is a military-grade 3-line to 8-line decoder/demultiplexer in 16-pin ceramic DIP package with 3 active-low enable inputs, high-speed AHCT CMOS logic, and extended -55°C to +125°C temperature range. In stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SNJ54AHCT138J 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
- 3-line to 8-line decoder with active-low outputs for memory address decoding
- 3 enable inputs (2 active-low, 1 active-high) for flexible enable control
- AHCT family: TTL-compatible inputs with fast CMOS switching speed
- Military-grade 16-pin ceramic DIP package for harsh environments
- Operating temperature: -55°C to +125°C
- Max output low current of 8 mA
Applications
The SNJ54AHCT138J is used in military and aerospace digital systems for address decoding, memory expansion, and demultiplexing functions. It is also applied in high-reliability control systems, data routing circuits, and chipselect generation in ruggedized embedded designs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | 3 ENABLE INPUTS |
| Family | AHCT/VHCT/VT |
| Input Conditioning | STANDARD |
| JESD-30 Code | R-GDIP-T16 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | 3-LINE TO 8-LINE DECODER |
| Max I(ol) | 0.008A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Output Characteristics | 3-STATE |
| 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) | 0.04mA |
| Prop. Delay@Nom-Sup | 12ns |
| Propagation Delay (tpd) | 13ns |
| 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 | CMOS |
| 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 SNJ54AHCT138J:
D Flip-Flop, AHCT/VHCT/VT Series, 2-Func, Positive Edge Triggered, 1-Bit, Complementary Output, CMOS, CDIP14
Frequently Asked Questions
What is the SNJ54AHCT138J and what does it do?
The SNJ54AHCT138J is a military-grade 3-line to 8-line decoder/demultiplexer from Texas Instruments. It accepts a 3-bit binary address on its inputs and activates one of eight active-low outputs corresponding to that address, making it ideal for address decoding, memory chip selection, and data routing in high-reliability systems.
What temperature range does the SNJ54AHCT138J support?
The SNJ54AHCT138J is rated for an extended military temperature range of -55°C to +125°C, making it suitable for harsh environments such as aerospace, defense, and industrial applications where standard commercial-grade components would fail.
What package does the SNJ54AHCT138J use, and how many pins does it have?
The SNJ54AHCT138J comes in a 16-pin ceramic dual-in-line package (Ceramic DIP). The ceramic package provides superior hermeticity and reliability compared to plastic packages, which is critical for military and high-reliability applications.
What logic family does the SNJ54AHCT138J belong to, and what are the voltage compatibility benefits?
The SNJ54AHCT138J belongs to the AHCT (Advanced High-Speed CMOS with TTL-compatible inputs) logic family. This means it accepts TTL-level input signals (VIH = 2V minimum) while operating from a 5V supply and providing full CMOS output swings, making it easy to interface with both TTL and CMOS logic families.
How many enable inputs does the SNJ54AHCT138J have and how do they work?
The SNJ54AHCT138J features three enable inputs: two active-low enables (G2A and G2B) and one active-high enable (G1). All three must be in their active states simultaneously for the decoder to function. This three-input enable structure allows the device to be used as a demultiplexer or to cascade multiple devices for larger decoding functions without additional logic gates.
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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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