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3-STATE Quad 2-Data Selectors/Multiplexers
74257
ic logic
The DM74LS257B is a high-performance quad data selector/multiplexer with 3-state outputs, designed for interfacing with bus-organized systems. It features Schottky-clamped inputs and outputs to improve AC performance.
In stock
Specifications
2- Operating Voltage
- 5V Volts
- Package
- 16-Lead Plastic Dual-In-Line Package (PDIP)
Pinout
16| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | VCC | POWER | Power supply |
| 2 | A4 | GPIO | Data input A4 |
| 3 | B1 | GPIO | Data input B1 |
| 4 | Y1 | GPIO | Output Y1 |
| 5 | A2 | GPIO | Data input A2 |
| 6 | B2 | GPIO | Data input B2 |
| 7 | Y2 | GPIO | Output Y2 |
| 8 | GND | GND | Ground |
| 9 | A3 | GPIO | Data input A3 |
| 10 | B3 | GPIO | Data input B3 |
| 11 | Y3 | GPIO | Output Y3 |
| 12 | A4 | GPIO | Data input A4 (repeated) |
| 13 | B4 | GPIO | Data input B4 |
| 14 | Y4 | GPIO | Output Y4 |
| 15 | CONTROL | GPIO | Control input for selecting data inputs and outputs |
| 16 | SELECT | GPIO | Select input to choose between A or B data inputs |
Interactive pinout
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74257
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