HEF4013 Dual D Flip-Flop IC

6 October 2018 - 0 Comments

HEF4013 Dual D Flip-Flop IC

HEF4013 Dual D Flip-Flop Pinout

HEF4013 Pinout Description

Pin No	Pin Symbol	Name	Description
1,13	1Q/2Q	Output	Output Pin of the Flip Flop
2,12	1Q’(bar)/2Q’(bar)	Complementary Output	Inverted output pin of Flip Flop
3, 11	1CP/2CP	Clock Input Pin	These pins must be provided with clock pulse for the flip flop
4,10	1CD/2CD	Clear Data	Resets the flip flop by clearing its memory
5,9	1D/2D	Data Input Pin	Input pin of the Flip Flop
6,8	1SD/2SD	Set-direct Input	Another Input pin for Flip Flop
7	Vss	Ground	Connected to the ground of the system
14	Vdd/Vcc	Supply Voltage	Powers the IC typically with 5V

Features

Dual D Flip Flop Package IC
Operating Voltage: 2V to 15V
Transition time : 60 ns (Typically)
Minimum High Level Input Voltage: 3.5 V
Maximum Low Level Input Voltage: 1.5 V
Minimum High Level Output Voltage: 4.95 V
Maximum Low Level Output Voltage: 0.05 V
High Level Output Current: 0.640mA
Available in 14-pin SO-14, SOT42 packages

Note: The values given above are applicable only when the IC operates at 5V. Complete Technical Details can be found in the HEF4013 datasheet given at the end of this page.

HEF4013 Equivalents

74LVC2G80, 4013

Alternative D Flip-Flops

74AS74AN, 74LS74, 4013

Where to use HEF4013 D Flip-Flop?

The HEF4013 is a 14-Pin SOT-14 IC from Nexperia which has two D Flip-Flops inside a single package. Each of these two Flip-Flops can be used individually based on our application. The flip-flops are also called as latching devices meaning it can remember one single bit of data and due to this ability the D-Flip Flops are used in time delay circuits, Sampling circuits and even as buffer circuits.

Normally D flip-flops are used in digital circuits in combination with other Gates or Flip-flops. So if you are looking for an IC for latching purpose or to act as a small programmable memory for your project, then this IC might be the right choice for you. Also If you are looking for an easy to use breadboard friendly PDIP equivalent, check out CD4013BE from TI.

How to use D Flip-Flop (HEF4013)?

Using a Flip-Flop is pretty straight forward. Simply power the IC using the 7th and 14th pin. As told early each flip-flop operates independently, just connect the input signals 5 and 6 for using the 1st flip-flop and you will get the output at pins 1 and 2. The pin 3 should be provided with a clock source normally a PWM signal from a MCU or 555 timers are used. The pin a 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 taking at the function table below. The symbol “X” indicates don’t care and the up-arrow indicates the rising edge of the signal.

Flip Flop Working

You can also simulate the IC to check if it would work as desired. Here I have used logic state and logic bits to view if the IC functions as it is supposed to, but you can replace them with actual circuitry of your application to check if it would suit your need. The gif file shown below can be verified with the truth table given above to make sure that the IC works as desired.

D Flip-Flop