4 entradas BCD, 7 salidas para displaySerie 74xx
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SN7447A BCD to 7-segment decoder
SN7447A
Texas Instruments · Serie 74xx
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Descripción
The SN7447A is a BCD to 7-segment decoder with open collector active-low outputs, designed for common-anode displays. It includes digit on/off control and lamp test functionality. It is TTL logic equivalent to the LS47 and widely used in classic projects.
Tabla de Verdad
| Display | Segmentos | BCD (DCBA) |
|---|---|---|
| 0 | abcdef | 0000 |
| 1 | bc | 0001 |
| 2 | abged | 0010 |
| 3 | abgcd | 0011 |
| 4 | fgbc | 0100 |
| 5 | afgcd | 0101 |
| 6 | afgedc | 0110 |
| 7 | abc | 0111 |
| 8 | abcdefg | 1000 |
| 9 | abcdfg | 1001 |