54F253 selector/multiplexers equivalent, dual 1-of-4 data selector/multiplexers.
SN54F253 . . . J PACKAGE SN74F253 . . . D OR N PACKAGE
(TOP VIEW)
1G 1 B2
1C3 3 1C2 4 1C1 5 1C0 6
1Y 7 GND 8
16 VCC 15 2G 14 A 13 2C3 12 2C2 11 2C1 10 2C0 9 2Y
These data selectors/multiplexers contain inverters and drivers to supply full binary .
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