The M74HC688 is a 8-bit comparator in the MC74HC series. It has the features of high speed, low power consumption, high noise immunity, symmetrical output impedance, balanced propagation delay and wide operating voltage range.
The M74HC688 is a high-speed CMOS 8-bit equality comparator fabricated with silicon gate CMOS technology. It compares two 8-bit words applied on inputs P0-P7 and Q0-Q7 to indicate whether they are equal. The device features a single active low enable input to facilitate cascading for comparisons of words greater than 8 bits.
| Supply Voltage Range | 2V to 6V |
|---|---|
| Propagation Delay (Typical) | 17ns |
| Operating Temperature Range | -55 to 125 °C |
| Input Capacitance | 10 pF |
It compares bit for bit two 8-bit words applied on inputs P0-P7 and Q0-Q7 and indicates whether or not they are equal.
A single active low enable is provided to facilitate cascading several packages.