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数据： 1-of-8 Data Selectors/Multiplexers With 3-State Outputs 数据表
These data selectors/multiplexers contain full binary decoding to select one of eight data sources and feature strobe-controlled complementary outputs. The 3-state outputs can interface with and drive data lines of bus-organized systems. When the strobe (G\) input is high, both outputs are in a high-impedance state in which both the upper and lower transistors of each totem-pole output are off, and the output neither drives nor loads the bus significantly.
The SN54F251B is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74F251B is characterized for operation from 0°C to 70°C.
D0, D1,...D7 = the level of the respective D input.
| Function |
| Technology Family |
| VCC (Min) (V) |
| VCC (Max) (V) |
| Channels (#) |
| Voltage (Nom) (V) |
| F @ Nom Voltage (Max) (Mhz) |
| ICC @ Nom Voltage (Max) (mA) |
| tpd @ Nom Voltage (Max) (ns) |
| Configuration |
| Type |
| IOL (Max) (mA) |
| IOH (Max) (mA) |
| Rating |
| Operating Temperature Range (C) |
| Package Group |
| Package Size: mm2:W x L (PKG) |
| Bits (#) |
| Digital input leakage (Max) (uA) |
| ESD Charged Device Model (kV) |
| ESD HBM (kV) |
| SN74F251B |
|---|
| Encoder Multiplexer |
| F |
| 4.5 |
| 5.5 |
| 1 |
| 5 |
| 70 |
| 24 |
| 9.5 |
| 8:1 |
| 3-State Output |
| 24 |
| -3 |
| Catalog |
| 0 to 70 |
| PDIP SOIC |
| See datasheet (PDIP) 16SOIC: 59 mm2: 6 x 9.9(SOIC) |
| 2 |
| 5 |
| 0.75 |
| 2 |
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