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74HC138 3-to-8 Decoder
SN74HC138
Texas Instrumentsic logic
The 74HC138 is a high-speed CMOS 3-to-8 line decoder/demultiplexer with active-low outputs. Three select inputs and three enable inputs choose one of eight outputs, easing memory decoding and cascading.
In stock
Specifications
10- Logic Function
- 3-to-8 line decoder/demultiplexer
- Operating Voltage
- 2 to 6 V
- Operating Temperature Range
- -40 to 85 C
- Supply Current Max
- 80 uA
- Output Drive Current
- 4 mA
- Input Current Max
- 1 uA
- Propagation Delay Typical
- 15 ns
- Input Capacitance Max
- 10 pF
- Output Current Continuous
- 25 mA
- Package Types
- SOIC-16, SSOP-16, PDIP-16, SO-16, TSSOP-16, CDIP-16, CFP-16, LCCC-20
Pinout
16| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | A | GPIO | Select input A (LSB) |
| 2 | B | GPIO | Select input B |
| 3 | C | GPIO | Select input C (MSB) |
| 4 | G2A | GPIO | Active-low enable A |
| 5 | G2B | GPIO | Active-low enable B |
| 6 | G1 | GPIO | Active-high enable |
| 7 | Y7 | GPIO | Output 7 (MSB) |
| 8 | GND | GND | Ground |
| 9 | Y6 | GPIO | Output 6 |
| 10 | Y5 | GPIO | Output 5 |
| 11 | Y4 | GPIO | Output 4 |
| 12 | Y3 | GPIO | Output 3 |
| 13 | Y2 | GPIO | Output 2 |
| 14 | Y1 | GPIO | Output 1 |
| 15 | Y0 | GPIO | Output 0 (LSB) |
| 16 | VCC | POWER | Supply voltage |
Interactive pinout
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SN74HC138
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