DESCRIPTION

· The M74HCT688 is a high-speed CMOS 8-bit equality comparator using silicon-gate C2MOS technology.
· It compares two 8-bit words on inputs P0-P7 and Q0-Q7, indicating equality.
· Features an active low enable for cascading to compare words larger than 8 bits.
· All inputs have protection against static discharge and transient excess voltage.

FEATURES

· High speed: Typical propagation delay of 21ns at 4.5V.
· Low power dissipation: Maximum current of 4µA at 25°C.
· TTL compatible: Minimum high-level input voltage of 2V, maximum low-level input voltage of 0.8V.
· Symmetrical output impedance: Minimum output current of 4mA.
· Balanced propagation delays: tPLH approximately equal to tPHL.
· Pin and function compatible with 74 series 688.

APPLICATIONS

· Suitable for applications requiring high-speed 8-bit equality comparison.
· Ideal for systems needing low power consumption.
· Useful in environments requiring TTL compatibility and static discharge protection.