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74HC74 - Dual D-type Positive Edge-triggered Flip-Flops IC

74HC74 - Dual D-type Positive Edge-triggered Flip-Flops IC

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  • Two Independent Negative Edge Triggered JK Flip-Flops
  • Standard Pin Arrangement
  • 4-bit Bistable Latch in a 16-Pin DIP Package
  • Outputs Directly Interface to CMOS, NMOS and TTL
  • Operating Temperature up to 70°C
  • Standard TTL Switching Voltages and symmetrical output characteristics

74HC74 - Dual D-type Positive Edge-triggered Flip-Flops IC

The 74HC Series 74HC74 device contains two independent positive-edge-triggered D flip-flops with complementary outputs. The information on the D input is accepted by the flip-flops on the positive-going edge of the clock pulse. The triggering occurs at a voltage level and is not directly related to the transition time of the rising edge of the clock.

The data on the D input may be changed while the clock is LOW or HIGH without affecting the outputs as long as the data setup and hold times are not violated. A low logic level on the preset or clear inputs will set or reset the outputs regardless of the logic levels of the other inputs. 

Pinout:

Pinout Of 74HC74 IC
Input (1D, 2D) 2, 12
Inverting Output  (1Q', 2Q') 6, 8
Non-Inverting (1Q, 2Q) 5, 9
Clock (1CLK, 2CLK) 3, 11
Enable Pin (ENP, ENT) 4, 10
RESET (R') 1,13
Power Supply (VCC) 14
Ground (GND) 7

Application:

  • Ultrasound System
  • Fans
  • Lab Instrumentation
  • Vacuum Cleaners
  • Video Communications System
  • IP Phone: Wired

Package Includes:

Selected qty of IC - 74HC74

Specifications:

Supply Voltage (VCC) 7 V
Input Voltage (VI) 7 V
Operating free-air temperature range 0°C to +70°C 
Storage temperature range –65°C to +150°C

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ADDITIONAL RESOURCES

1. What is a 74HC74 dual D type flip flop?

  • The 74HC74 device contains two independent positive-edge-triggered D flip-flops with complementary outputs. The flip-flops receive the data from the D input on the clock pulse's positive-going edge. The triggering takes place at a voltage level and is not correlated with the rising edge of the clock's transition time.

2. Which pins of 74HC74 IC are used for giving clock signals?

  • The 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.

Customer Reviews

Based on 6 reviews
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(6)
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G
Gunjan
Liked it, working perfect.

It's a flexible and reliable part that helps electronic circuits perform logic operations smoothly.

A
Arnav
Great product

Great product

B
Balaram
Excellent product

great product. Reached on time.

A
Arnav
Good product

Good product

R
Raju
Cheap - easy to use

Cheap - easy to use