
STMicroelectronics
DESCRIPTION
The M54/74HC74 is a high speed CMOS DUAL D TYPE FLOP WITH PRESET AND CLEAR fabricated in silicon gate C2MOS technology. It has the same high speed performance of LSTTL combined with true CMOSlow power consumption. A signal on the D INPUT is transferred to the Q OUTPUT during the positive going transition of the clock pulse. CLEAR and PRESET are independent of the clock and accomplished by a low on the appropriate input. All inputs are equipped with protection circuits against static discharge and transient excess voltage.
.HIGH SPEED fMAX= 71 MHz (TYP.) AT VCC=5V
.LOW POWER DISSIPATION ICC=2µA (MAX.) AT TA=25°C
.HIGH NOISE IMMUNITY VNIH=VNIL=28%VCC(MIN.)
.OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS
.SYMMETRICAL OUTPUT IMPEDANCE IOH=IOL= 4 mA (MIN.)
.BALANCED PROPAGATION DELAYS tPLH=tPHL
.WIDE OPERATING VOLTAGE RANGE VCC(OPR) = 2 V TO 6 V
.PIN AND FUNCTION COMPATIBLE WITH 54/74LS74