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part number : 74242 Description : 4-bit 3-state inverting bus transceiver.Two enable pins control output enables, one active high and one active low.
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/GAB| 1 14| VCC
| 2 13| GBA
A1| 3 12|
A2| 4 11| B1
A3| 5 10| B2
A4| 6 9| B3
GND| 7 8| B4
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