HD74HC677 Datasheet (Hitachi Semiconductor)

HD74HC677, 16-bit Address Comparator

The HD74HC677 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 infomation applied to the 16 A inputs must be low or high to cause a low state at

HD74HC677 Features

* an enable input (G). When G is low, the device is enabled. When G is high, the device is disabled and the output is high regardless of the A and P inputs. Features

* High Speed Operation: tpd (A to Y) = 17 ns typ (CL = 50 pF) High Output Current: Fano