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DM74LS251 |
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| Part Number | DM74LS251 |
| Manufacturer | National Semiconductor |
| Description | These data selectors multiplexers contain full on-chip binary decoding to select one-of-eight data sources and feature a strobe-controlled TRI-STATE output The strobe must be at a low logic level to e... |
| Features |
Y Y Y Y Y Y
Y
Y
TRI-STATE version of LS151 Interface directly with system bus Perform parallel-to-serial conversion Permit multiplexing from N-lines to one line Complementary outputs provide true and inverted data Maximum number of common outputs 54LS 49 74LS 129 Typical propagation delay time (D to Y) 54LS 17 ns 74LS 17 ns Typical power dissipation 54LS 35 mW 74LS 35 mW
Connection Diagram
Dual-In-Line Package
Function Table
Inputs Select C X L L L L H H H H B X L L H H L L H H A X L H L H L H L H Strobe S H L L L L L L L L Outputs Y Z D0 D1 D2 D3 D4 D5 D6 D7 W Z D0 D1 D2 D3 D4 D5 D6 D7
... |
| Document |
 DM74LS251 Data Sheet
PDF 135.33KB |
| No. | Parte # | Fabricante | Descripción | Hoja de Datos |
|---|---|---|---|---|
| 1 | DM74LS251 |
Fairchild Semiconductor |
3-STATE 1-of-8 Line Data Selector/Multiplexer |
|
| 2 | DM74LS253 |
National Semiconductor |
TRI-STATE Data Selectors/Multiplexers |
|
| 3 | DM74LS253 |
Fairchild Semiconductor |
3-STATE Data Selector/Multiplexer |
|
| 4 | DM74LS256 |
National Semiconductor |
Dual 4-Bit Addressable Latch |
|
| 5 | DM74LS257 |
National Semiconductor |
TRI-STATE Quad 2-Data Selectors/Multiplexers |
|
| 6 | DM74LS257B |
National Semiconductor |
TRI-STATE Quad 2-Data Selectors/Multiplexers |
|
Desde 2024. D4U Semiconductor.
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