The IC 74138 3-to-8 Decoder/Demultiplexer is a high-performance TTL logic device designed to decode three binary input signals into one of eight active-low outputs. It features three enable inputs, allowing for cascading and hierarchical decoding in complex systems. This IC is widely used in memory address decoding, data selection, multiplexing, and control logic applications. With high fan-out capability and fast response time, the 74138 ensures efficient operation in digital systems. Its fully TTL-compatible design makes it easy to interface with microcontrollers, processors, and other logic devices. The 74138 is housed in a standard 16-pin DIP package, ideal for educational, industrial, and prototype applications requiring reliable and fast logic decoding. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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Features:
3-to-8 line decoder and demultiplexer with active-low outputs.
Three enable inputs for flexible decoding and cascading options.
TTL-compatible inputs and outputs for reliable logic interfacing.
High fan-out capacity to drive multiple devices simultaneously.
Fast propagation delay for high-speed digital systems.
Compact 16-pin DIP package for breadboard and PCB applications.
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Applications:
Memory address decoding in microprocessor systems.
Display selection and multiplexed output control.
Data routing and signal demultiplexing.
Control logic and function decoding circuits.
Educational digital electronics and TTL logic training projects.
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| General Specifications |
| IC Type | 3-to-8 Decoder/Demultiplexer |
| Logic Family | TTL |
| Number of Inputs | 3 |
| Number of Outputs | 8 (Active-Low) |
| Enable Inputs | 3 |
| Output Type | Active-Low |
| Supply Voltage | 4.75V – 5.25V |
| Logic Compatibility | TTL |
| Propagation Delay | 20 ns typical |
| Output Drive Capability | 10 TTL Loads |
| Package Type | DIP-16 |
| Operating Temperature Range | 0°C to +70°C |
| Typical Supply Current | 8 mA |
| Shipment Weight | 0.0016 kg |
| Shipment Dimensions | 4 × 3 × 3 cm |
Please allow 5% measuring deviation due to manual measurement.
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Package Includes:
1 x IC 74138 3-to-8 Decoder / Demultiplexer
