SNJ54F138J Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The SNJ54F138J is a high-speed 3-line to 8-line decoder and demultiplexer from Texas Instruments, featuring two active-LOW and one active-HIGH enable inputs for gating. It belongs to the F/FAST TTL logic family and is packaged in a 16-pin ceramic DIP for high-reliability military and aerospace applications rated -55°C to 125°C.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SNJ54F138J Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $12.3473(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
- 3-line to 8-line binary decoder with 8 active-LOW outputs for full address decoding
- Two active-LOW and one active-HIGH enable inputs for flexible gating and cascading
- F/FAST TTL logic family providing high switching speed and low propagation delay
- Military temperature range -55°C to 125°C in a hermetic 16-pin ceramic DIP package
- Fully compatible with standard TTL and FAST logic families for system integration
- 50pF load capacitance support for driving standard digital bus loads
Applications
The SNJ54F138J is used in memory address decoding, chip-select generation, and data demultiplexing in military and aerospace embedded systems requiring high-reliability and wide-temperature logic. It also serves in industrial control systems for output port expansion, binary-to-octal conversion, and multiplexed data routing in high-speed digital backplanes.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | TWO ACTIVE-LOW AND ONE ACTIVE-HIGH ENABLE INPUTS |
| Family | F/FAST |
| 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) | 0.02A |
| 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) | 20mA |
| Prop. Delay@Nom-Sup | 9ns |
| Propagation Delay (tpd) | 12ns |
| 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
Compatible alternatives and drop-in replacements for SNJ54F138J:
J-Kbar Flip-Flop, F/FAST Series, 2-Func, Positive Edge Triggered, 2-Bit, Complementary Output, TTL, CDIP16
Frequently Asked Questions
What is the function of the SNJ54F138J?
The SNJ54F138J is a 3-to-8 line binary decoder and demultiplexer. It takes a 3-bit binary address input and activates one of eight active-LOW outputs corresponding to the selected address, while the enable inputs allow the device to be enabled or disabled for cascaded multi-output designs.
What temperature range is the SNJ54F138J rated for?
The SNJ54F138J is rated for the military temperature range of -55°C to 125°C. The hermetic ceramic DIP package provides excellent protection against moisture and contaminants in harsh environment military, aerospace, and industrial applications.
How many enable inputs does the SNJ54F138J have?
The SNJ54F138J has three enable inputs: two active-LOW (G1-bar and G2A-bar) and one active-HIGH (G). All three must be in their active state simultaneously to enable the decoder outputs; otherwise all outputs remain in the inactive HIGH state, useful for cascading multiple decoders.
What logic family does the SNJ54F138J belong to?
The SNJ54F138J belongs to the F/FAST (Fairchild Advanced Schottky TTL) logic family, which provides faster switching speeds and lower propagation delays than standard 54/74 TTL, making it appropriate for high-speed address decoding and timing-critical logic functions.
Related Guides
TPS61291DRVR Selection Guide: Low-Quiescent-Current Boost Converters for IoT and Wearables
How to select the TPS61291DRVR and low-Iq boost converters for IoT, wearables, and coin-cell designs. Compares specs, packages, and alternatives from TI, ADI, and Microchip.
May 13, 2026
TMS5704357BZWTQQ1 Selection Guide: Choosing the Right TMS570 Automotive MCU Variant
Compare TMS570 automotive MCU variants by ASIL level, flash, package, and peripherals. Find the right fit from entry-level LQFP to the ASIL-D TMS5704357BZWTQQ1.
May 13, 2026
TI Hercules TMS5704357BZWTQQ1 Design Guide for Automotive ASIL-D and Industrial Functional Safety
Complete integration guide for the TI Hercules TMS5704357BZWTQQ1 dual-core lockstep Cortex-R5F MCU: lockstep CPU, ECC RAM, FlexRay/CAN-FD, and ASIL-D pitfalls.
May 12, 2026
PTN78000WAH Selection Guide: Choosing the Right 1.5 A 36 V Step-Down Power Module
Compare PTN78000WAH against PTN78000WAS, PTN78060WAH, and other 1.5A 36V step-down modules. Covers package, current rating, efficiency, and drop-in replaceability.
May 12, 2026
Why Buy from FindMyChip
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.
More from Texas Instruments
LM3911N
Dual-In-Line Packages
Integrated Circuit
CC430F5143IRGZT
Quad Flat No-Lead
Integrated Circuit
CD54HC00F
Ceramic Dual-In-Line Packages
Integrated Circuit
CD54HCT86F
Ceramic Dual-In-Line Packages
Integrated Circuit
CDCL1810RGZR
Quad Flat No-Lead
Integrated Circuit
CDC2351DBR
Small Outline Packages
Integrated Circuit
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $15.0170 | $15.02 |
| 6+ | $13.3484 | $80.09 |
| 20+ | $12.3473 | $246.95 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”