Description

7474 DIP Dual D Positive Edge Triggered Flip-Flop With Preset AND Clear

74HC74N flip-flop IC utilizes the Schottky TTL circuitry to produce high-speed D-type flip-flops. Each flip-flop has individual clear and set inputs, and also complementary Q and Q`(bar) outputs.

How to use 7474

Using a Flip-Flop is pretty straightforward. Simply power the IC using the Vcc and GND pin. As told earlier each flip-flop operates independently, just connect the input signals 2 and 3 for using the 1st flip-flop and you will get the output at pins 5 and 6. Pin 3 should be provided with a clock source normally a PWM signal from an MCU or 555 timers is used. The pin can be used to clear the data and reset the flip-flop by making it high. The complete working of the Flip flop can be understood by looking at the function table below. The symbol “X” indicates don’t care and the up-arrow indicates the rising edge of the signal.

Applications

• Used as Shift Registers
• Memory/Control Registers
• Buffer Circuits
• Sampling Circuits
• Latching devices