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MC74VHCT74ADR2
Dual D-Type Flip-Flop with Set and Reset
MC74VHCT74A
Dual D-Type Flip-Flop
with Set and Reset
The MC74VHCT74A 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 7 V , allowing the interface of 5 V systems
to 3 V systems.
The VHCT inputs are compatible with TTL levels. This device can
be used as a level converter for interfacing 3.3 V to 5.0 V , because it
has full 5 V CMOS level output swings.
The VHCT74A input structures provide protection when voltages
between 0 V and 5.5 V are applied, regardless of the supply voltage.
The output structures also provide protection when VCC = 0 V. These
input and output structures help prevent device destruction caused by
supply voltage – input/output voltage mismatch, battery backup, hot
insertion, etc. High Speed: fmax = 60 MHz (Typ) at VCC = 5 V Low Power Dissipation: ICC = 2 �A (Max) at TA = 25°C Power Down Protection Provided on Inputs Balanced Propagation Delays Designed for 4.5 V to 5.5 V Operating Range Low Noise: VOLP = 0.8 V (Max) Pin and Function Compatible with Other Standard Logic Families Latchup Performance Exceeds 300 mA ESD Performance: HBM > 2000 V; Machine Model > 200 V Chip Complexity: 128 FETs or 32 Equivalent Gates
