The SN74HCS251-Q1 is a data selector/multiplexer containing full binary decoding to select 1-of-8 data sources and features strobe-controlled complementary 3-state outputs.
| Technology family | HCS |
| Function | Multiplexer |
| Configuration | 8 |
| Number of channels | 1 |
| Operating temperature range (°C) | -40 to 125 |
| Rating | Automotive |
| SOIC (D) | 16 | 59.4 mm² 9.9 x 6 |
| TSSOP (PW) | 16 | 32 mm² 5 x 6.4 |