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HD74HC679

Renesas
Part Number HD74HC679
Manufacturer Renesas
Description 12-bit Address Comparator
Published Dec 4, 2017
Detailed Description HD74HC679 12-bit Address Comparator REJ03D0640-0200 (Previous ADE-205-526) Rev.2.00 Mar 30, 2006 Description The HD74HC6...
Datasheet PDF File HD74HC679 PDF File

HD74HC679
HD74HC679

Overview
HD74HC679 12-bit Address Comparator REJ03D0640-0200 (Previous ADE-205-526) Rev.
2.
00 Mar 30, 2006 Description The HD74HC679 address comparator simplifies addressing of memory boards and/or other peripheral devices.
The four P inputs are normally hard wired with a preprogrammed address.
An internal decoder determines what input information applied to the 12 A inputs must be low or high to cause a low state at the output (Y).
For example, a positive-logic bit combination of 0111 (decimal 7) at the P input determines that inputs A1 through A7 must be low and that inputs A8 through A12 must be high to cause the output to go low.
Equality of the address amplified at the A inputs to the preprogramm...


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