DESCRIPTION
The M54/74HCT245, HCT640 and HCT643 utilise silicon gate C2MOS technology to achive operating speeds eqivalent to LSTTL devices.
   
■ HIGH SPEED
    tPD = 10 ns (TYP.) at VCC = 5V
■ LOW POWER DISSIPATION
    ICC = 4 µA (MAX.) at TA = 25 °C
■ COMPATIBLE WITH TTL OUTPUTS
    VIH = 2V (MIN.) VIL = 0.8V (MAX.)
■ OUTPUT DRIVE CAPABILITY
    15 LSTTL LOADS
■ SYMMETRICAL OUTPUT IMPEDANCE
    |IOH| = IOL = 6 mA (MIN)
■ BALANCED PROPAGATION DELAYS
    tPLH = tPHL
■ PIN AND FUNCTION COMPATIBLE
    WITH 54/74LS245/640/643