SN54ALS138AJ Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The SN54ALS138AJ is a 3-to-8 line decoder and demultiplexer from Texas Instruments in the ALS family, featuring two active-low and one active-high enable inputs with Schottky-clamped outputs for high performance. It is housed in a 16-pin ceramic DIP package rated for military temperature ranges. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SN54ALS138AJ 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 Schottky-clamped outputs for high-speed address decoding and memory selection in digital systems
- Dual active-low and single active-high enable inputs enabling cascading and flexible chip-select control in complex logic designs
- Military-grade 16-pin ceramic DIP (R-GDIP-T16) package providing superior reliability in harsh environments and extended temperature operation
Applications
The SN54ALS138AJ is designed for address decoding, memory chip selection, and demultiplexing in military-grade and high-reliability digital systems. Its Schottky-clamped ALS logic provides fast propagation delays suitable for high-speed bus interface and control logic applications. This device is commonly used in ruggedized embedded systems, avionics, and defense electronics requiring dependable decoder performance over wide temperature ranges.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | 2 ACTIVE-LOW AND 1 ACTIVE-HIGH ENABLE INPUT, SCHOTTKY-CLAMPED FOR HIGH PERFORMANCE |
| Family | ALS |
| 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) | 0.004A |
| Number of Bits | 8 |
| Number of Functions | 1 |
| 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) | 10mA |
| Prop. Delay@Nom-Sup | 22ns |
| Propagation Delay (tpd) | 28ns |
| Qualification Status | Not Qualified |
| 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
What is the function of the SN54ALS138AJ?
The SN54ALS138AJ is a 3-to-8 line decoder and demultiplexer that converts a 3-bit binary input into one of eight active-low outputs, with two active-low and one active-high enable inputs for cascading and chip-select control in address decoding and logic systems.
What package does the SN54ALS138AJ use?
The SN54ALS138AJ is packaged in a 16-pin ceramic DIP (Dual In-Line Package) with JESD-30 code R-GDIP-T16, a robust package format designed for military and high-reliability applications requiring superior thermal performance and long-term stability.
What logic family does the SN54ALS138AJ belong to?
The SN54ALS138AJ is part of the ALS (Advanced Low-Power Schottky) TTL logic family, offering Schottky-clamped outputs for improved switching speed and reduced power consumption compared to standard TTL, with a 50pF load capacitance rating and 4mA output low current.
What are typical applications for the SN54ALS138AJ?
The SN54ALS138AJ is commonly used in address decoding for memory systems, chip-select generation for microprocessor buses, data demultiplexing, and control logic in military avionics, ruggedized industrial systems, and legacy TTL-based digital designs requiring reliable 3-to-8 decoding.
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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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