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DN74LS138

3-LINE TO 8-LINE DECORDERS/DEMULTIPLEXERS

Partnumber Manufacturer Quantity Availability
DN74LS138 84 In Stock

Description and Introduction

3-LINE TO 8-LINE DECORDERS/DEMULTIPLEXERS The DN74LS138 is a 3-to-8 line decoder/demultiplexer manufactured by NEC (now part of Renesas Electronics). Here are its key specifications:

1. **Function**: Converts a 3-bit binary input into one of eight mutually exclusive outputs (active-low).
2. **Inputs**: Three binary select inputs (A0, A1, A2) and three enable inputs (two active-low: E1, E2; one active-high: E3).
3. **Outputs**: Eight active-low outputs (Y0-Y7).
4. **Supply Voltage (VCC)**: 4.75V to 5.25V (nominal 5V).
5. **Power Dissipation**: 32mW (typical).
6. **Propagation Delay**: 21ns (max) from input to output.
7. **Operating Temperature Range**: 0°C to +70°C.
8. **Package Options**: 16-pin DIP (Dual In-line Package).
9. **Logic Family**: LS-TTL (Low-Power Schottky TTL).
10. **Current Ratings**:
   - Input High Current: 20μA (max)
   - Input Low Current: -0.36mA (max)
   - Output High Current: -0.4mA (max)
   - Output Low Current: 8mA (max)

The device is designed for high-speed decoding and data demultiplexing applications in digital systems.

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