描述 Description

The MC74VHC74 is an advanced high speed CMOS D–type flip–flop fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation.
The signal level applied to the D input is transferred to Q output during the positive going transition of the Clock pulse.
Reset (RD) and Set (SD) are independent of the Clock (CP) and are accomplished by setting the appropriate input Low.
The internal circuit is composed of three stages, including a buffer output which provides high noise immunity and stable output. The inputs tolerate voltages up to 7V, allowing the interface of 5V systems to 3V systems.
? High Speed: fmax = 170MHz (Typ) at VCC = 5V
? Low Power Dissipation: ICC = 2μA (Max) at TA = 25°C
? High Noise Immunity: VNIH = VNIL = 28% VCC
? Power Down Protection Provided on Inputs
? Balanced Propagation Delays
? Designed for 2V to 5.5V Operating Range
? Low Noise: VOLP = 0.8V (Max)
? Pin and Function Compatible with Other Standard Logic Families
? Latchup Performance Exceeds 300mA
? ESD Performance: HBM 2000V; Machine Model 200V
? Chip Complexity: 128 FETs or 32 Equivalent Gates