SNJ54AHC138J Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The SNJ54AHC138J is a military-grade 3-to-8 line decoder/demultiplexer IC from Texas Instruments' Advanced High-speed CMOS (AHC) logic family. It features three enable inputs (G1, G2A, G2B) for cascading and output inhibit, operates from 2V to 5.5V, and is rated for -55°C to +125°C military temperatures. Packaged in a 16-pin ceramic GDIP for high-reliability defense applications.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SNJ54AHC138J 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-to-8 line decoder/demultiplexer with active-low decoded outputs
- Three enable inputs (G1 active-high, G2A and G2B active-low) for cascading and output disable
- Wide supply range of 2V to 5.5V across the AHC high-speed CMOS family
- Military temperature range of -55°C to +125°C for extreme environment reliability
- 8 mA output sink current for direct LED and bus driving
- 16-pin ceramic GDIP with hermetic sealing for MIL-grade long-term reliability
Applications
The SNJ54AHC138J is used in memory chip select decoding, address demultiplexing, and data routing in military computing and avionics bus architectures where the wide supply range and hermetic packaging guarantee reliable operation under extreme conditions. It is also employed in space payload electronics, military radar systems, and defense communication equipment where cascadable 3-to-8 decoding enables addressing of up to 256 unique locations using multiple cascaded devices.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | 3 ENABLE INPUTS |
| Family | AHC/VHC/H/U/V |
| 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 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 | 11.5ns |
| Propagation Delay (tpd) | 18ns |
| Qualification Status | Not Qualified |
| Screening Level | MIL-PRF-38535 |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2V |
| 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 SNJ54AHC138J:
D Flip-Flop, AHC/VHC/H/U/V Series, 2-Func, Positive Edge Triggered, Complementary Output, CMOS, CDIP14
D Flip-Flop, AHCT/VHCT/VT Series, 2-Func, Positive Edge Triggered, 1-Bit, Complementary Output, CMOS, CDIP14
Frequently Asked Questions
How many enable inputs does the SNJ54AHC138J have?
The SNJ54AHC138J has three enable inputs: G1 (active-high), G2A (active-low), and G2B (active-low). All three must be in their active state simultaneously (G1 high, G2A and G2B low) for any output to assert. This arrangement allows easy cascading of multiple 138 devices to implement 4-to-16 or larger decoder trees.
What is the operating temperature range of the SNJ54AHC138J?
The SNJ54AHC138J is rated for a full military temperature range of -55°C to +125°C, meeting MIL-STD requirements for avionics, space, and defense electronics. This extreme temperature capability ensures reliable decoder operation in cold high-altitude environments and hot under-armor vehicle electronics without performance degradation.
What supply voltage does the SNJ54AHC138J support?
The SNJ54AHC138J operates from 2V to 5.5V supply, covering both 3.3V and 5V logic domains within the AHC high-speed CMOS family. This wide voltage range enables interfacing with modern 3.3V FPGAs and processors as well as legacy 5V TTL-based systems within the same military-grade design.
What package is the SNJ54AHC138J offered in?
The SNJ54AHC138J is housed in a 16-pin CDIP (Ceramic Dual-In-Line Package) with J suffix, designated JESD-30 R-GDIP-T16. The ceramic hermetic package provides maximum protection against moisture, shock, and radiation — critical for meeting military component reliability standards in long-life mission-critical applications.
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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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