DESCRIPTION
The M74HCT688 is an high speed CMOS 8 BIT EQUALITY COMPARATOR fabricated with silicon gate C2MOS technology.
   
■ HIGH SPEED:
    tPD = 21ns (TYP.) at VCC = 4.5V
■ LOW POWER DISSIPATION:
    ICC = 4µA(MAX.) at TA=25°C
■ COMPATIBLE WITH TTL OUTPUTS :
    VIH = 2V (MIN.) VIL = 0.8V (MAX)
■ SYMMETRICAL OUTPUT IMPEDANCE:
    |IOH| = IOL = 4mA (MIN)
■ BALANCED PROPAGATION DELAYS:
    tPLH ≅ tPHL
■ PIN AND FUNCTION COMPATIBLE WITH
    74 SERIES 688