74138 IC High Speed 1-of-8 Decoder/ Demultiplexer
- 🔀 74138 TTL IC: high-speed 3-to-8 decoder / demultiplexer
- 🎯 Selects 1 of 8 outputs using 3 address inputs
- 🚦 Multiple enable pins for flexible control and cascading
- ⚡ Standard 5V operation (TTL compatible)
- 📉 Active-LOW outputs—great for driving logic and LEDs (with resistors)
- 🧩 Ideal for memory address decoding and I/O expansion
- 🚀 Fast switching for reliable digital systems
- 📦 Common DIP package—easy for breadboard and prototyping
20,00 EGP
Payment Methods:
Description
The 74138 is a 3-to-8 line decoder/demultiplexer IC that offers high-speed performance and is widely used in digital logic systems. It takes a 3-bit binary input and activates one of the eight outputs based on the input combination, while keeping the others inactive. Ideal for memory address decoding, data routing, and logic expansion.
With built-in enable inputs and active-low outputs, the 74138 is designed for use in microcontroller, microprocessor, and memory interfacing applications.
Key Features
-
High-speed 3-to-8 line decoder/demultiplexer
-
Active LOW outputs (Y0–Y7)
-
Three enable inputs (G1, G2A, G2B) for cascading or control logic
-
TTL-compatible inputs and outputs
-
Ideal for address decoding, data demux, and logic expansion
-
DIP-16 package, easy to breadboard and solder
Specifications
| Parameter | Value |
|---|---|
| Function | 3-to-8 Line Decoder / Demux |
| Logic Family | 74 Series TTL |
| Inputs | 3 Binary Select Inputs (A, B, C) + 3 Enable Inputs (G1, G2A, G2B) |
| Outputs | 8 Active-Low Outputs (Y0–Y7) |
| Output Type | TTL |
| Supply Voltage (Vcc) | 4.75V to 5.25V (typically 5V) |
| Package Type | DIP-16 |
| Propagation Delay | Typically ~20ns |
| Operating Temperature | 0°C to +70°C (Commercial Grade) |
| Applications | Address decoding, data routing, microprocessor systems |
Package Includes
1 × IC 74138 – 3-to-8 Line Decoder/Demultiplexer (DIP-16)
Specification
General
| WeightWeight | 0,0000 g |
|---|---|
 Dimensions | 2,5 × 0,7 × 0,3 cm |
| Product Name | 74138 IC – High Speed 1-of-8 Decoder/Demultiplexer |
| Type | Digital Logic IC |
| Model | 74138 |
| Logic Family | TTL (Transistor-Transistor Logic) |
| Function | 3-to-8 Line Decoder / Demultiplexer |
| Enable Inputs | 3 (Active Low) |
| Output Type | 8 Active Low Outputs |
| Operating Voltage | 5 V DC |
| Input Current | 1.6 mA (typical) |
| Output Current | ±8 mA (typical) |
| Propagation Delay | ~15 ns (typical) |
| Package Type | DIP-16 / Through-Hole |
| Operating Temperature | 0°C to +70°C |
| Applications | Digital Logic Circuits, Address Decoding, Microcontroller Interfacing, Educational Electronics |
| Package Contents | 1× 74138 IC – High Speed 1-of-8 Decoder/Demultiplexer |
