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HD74HC680 Dataheets PDF



Part Number HD74HC680
Manufacturers Renesas
Logo Renesas
Description 12-bit Address Comparator
Datasheet HD74HC680 DatasheetHD74HC680 Datasheet (PDF)

HD74HC680 12-bit Address Comparator REJ03D0641-0200 (Previous ADE-205-527) Rev.2.00 Mar 30, 2006 Description The HD74HC680 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 .

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HD74HC680 12-bit Address Comparator REJ03D0641-0200 (Previous ADE-205-527) Rev.2.00 Mar 30, 2006 Description The HD74HC680 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 applied at the A inputs to the preprogrammed address is indicated by the output being low. The HD74HC680 features a transparent latch and a latch enable input (C). When C is high, the device is in the transparent mode. When C is low, the previous logical state of Y is latched. Features • High Speed Operation • High Output Current: Fano.


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