74LS107 Features, Alternative, Pinout and Datasheet

What is 74LS107 JK flip-flop?

74LS107 is a dual JK flip-flop integrated circuit (IC) that is part of the 74LS family of TTL (transistor-transistor logic) digital logic chips. It is designed to operate with a 5V power supply and can be used in a wide range of electronic circuits.

Two independent JK flip-flops, a key component of digital circuitry, are present in the 74LS107. An electronic circuit known as a JK flip-flop may hold a single bit of data, which can be either a logical “1” or “0.” Depending on the current state of the flip-flop and the input signals, the “J” and “K” inputs control whether the flip-flop will set, reset, or toggle its output.

A variety of helpful features are present in the 74LS107, such as a clear input for resetting the flip-flop to a known state, a clock input for timing the flip-flop operation, and an output enable input for managing the output. It can also be easily combined with other TTL logic chips because it includes inputs and outputs that are TTL compatible.

The 74LS107 is a robust and adaptable digital logic IC that may be utilized in a variety of electrical applications, such as counters, timers, and memory circuits.

What are the features of 74LS107?

• It has two separate J-K flip-flops with separate J, K, and reset inputs and a shared clock input.
• The flip-flops are negative edge triggered, meaning that they will respond to changes in the clock input when it goes from high to low.
• 4.75 to 5.25 volts of power supply voltage are required for the chip to function.
• The 74LS107 has a maximum clock frequency of 42 MHz.
•  It responds to changes in the inputs on the output in about 12 ns, which is the normal propagation delay for this device.
• The chip can dissipate up to 500mW of power.
• The 74LS107 is compatible with other 74LS TTL logic chips and is available in a 16-pin DIP (dual in-line package).

The 74LS107 is a versatile and reliable component that can be used in a wide range of digital applications, particularly in sequential logic circuits.

Application of 74LS107

A typical component in many digital circuits is the twin negative edge-triggered J-K flip-flop IC known as the 74LS107. This IC is intended for use in high-speed applications and is a member of the TTL (Transistor-Transistor Logic) family. The following are some of the applications of 74LS107:

Counters: The 74LS107 IC can be used in counters to store binary information. It can function as a decade counter or a binary counter. It can be used to count from 0 to 15 in a binary counter configuration and from 0 to 9 in a decade counter configuration.

Frequency division: The 74LS107 can also be used as a frequency divider. It can divide the oscillator’s frequency when used in tandem with one.

Shift registers: The 74LS107 IC can also be used as a shift register. Shift registers are used in digital circuits to transfer data from one register to another. The 74LS107 can be used as a shift register by connecting the output of one flip-flop to the input of the next.

Control circuits: The 74LS107 can be used in control circuits to store binary data. It can be used to store the state of a switch or a sensor. The stored data can then be used to control other parts of the circuit.

Memory circuits: The 74LS107 can be used in memory circuits. Memory circuits are used to store data that can be retrieved at a later time. The 74LS107 can be used in memory circuits to store binary data.

Clock generators: The 74LS107 can be used as a clock generator. Clock generators are used in digital circuits to generate clock signals that are used to synchronize other parts of the circuit.

Digital filters: The 74LS107 can also be used in digital filters. Digital filters are used in signal processing to remove unwanted frequencies from a signal. The 74LS107 can be used in digital filters to store the output of the filter.

The 74LS107 is a versatile IC that can be used in a variety of digital circuits. Its applications include counters, frequency dividers, shift registers, control circuits, memory circuits, clock generators, and digital filters. Its high-speed performance and low power consumption make it a popular choice for digital circuits that require high-speed and low-power operation.

74LS107 Pinout

Pin Specification:

Pin 1 (J1) serves as the first flip-J flop’s input.

Pin 2 (K1) is the first flip-K flop’s input.

Pin 3 (CLR1) serves as the first flip-clear flop’s input.

Pin 4 (CLK2) serves as the second flip-clock flop’s input.

Pin 5 (CLR2) serves as the second flip-clear flop’s input.

Pin 6 (Q2) serves as the second flip-Q flop’s output.

Ground pin is Pin 7 (GND).

Pin 8 (J2) serves as the second flip-J flop’s input.

Pin 9 (K2) serves as the second flip-K flop’s input.

Pin 10 (K1) serves as the first flip-K flop’s input.

Pin 11 (J2) serves as the second flip-J flop’s input.

Pin 12 (K2) serves as the second flip-K flop’s input.

Pin 13 (CLR2) serves as the second flip-clear flop’s input.

Pin 14 (CLK1) serves as the first flip-clock flop’s input.

Pin 15 (Q1) is the first flip-Q flop’s output.

Pin 16 (Vcc): Input for supply voltage.

Pinout 

Pin 1 (J1): J input of the first flip-flop

Pin 2 (K1): K input of the first flip-flop

Pin 3 (CLR1): Clear input of the first flip-flop

Pin 4 (CLK2): Clock input of the second flip-flop

Pin 5 (CLR2): Clear input of the second flip-flop

Pin 6 (Q2): Q output of the second flip-flop

Pin 7 (GND): Ground pin

Pin 8 (J2): J input of the second flip-flop

Pin 9 (K2): K input of the second flip-flop

Pin 10 (K1): K input of the first flip-flop

Pin 11 (J2): J input of the second flip-flop

Pin 12 (K2): K input of the second flip-flop

Pin 13 (CLR2): Clear input of the second flip-flop

Pin 14 (CLK1): Clock input of the first flip-flop

Pin 15 (Q1): Q output of the first flip-flop

Pin 16 (Vcc): Supply voltage input.

Pin Description of 74LS76:

The 74LS76 is a dual negative-edge triggered JK flip-flop, which is a type of digital logic chip. It has two independent flip-flops (A and B) with individual J, K, preset (PR), and clear (CLR) inputs, and complementary Q and Q’ outputs.

The pin configuration for the 74LS76 is as follows:

Pin 1: Clear input for Flip-Flop A (CLR A)

Pin 2: Clock input for Flip-Flop A (CLK A)

Pin 3: Negative-edge triggered clock input for Flip-Flop A (CLKEN A)

Pin 4: J input for Flip-Flop A (J A)

Pin 5: K input for Flip-Flop A (K A)

Pin 6: Preset input for Flip-Flop A (PR A)

Pin 7: Output Q’ for Flip-Flop A (Q’ A)

Pin 8: Output Q for Flip-Flop A (Q A)

Pin 9: Ground (GND)

Pin 10: Output Q for Flip-Flop B (Q B)

Pin 11: Output Q’ for Flip-Flop B (Q’ B)

Pin 12: Preset input for Flip-Flop B (PR B)

Pin 13: K input for Flip-Flop B (K B)

Pin 15: Negative-edge triggered clock input for Flip-Flop B (CLKEN B)

Pin 16: Clock input for Flip-Flop B (CLK B)

Pin 17: Clear input for Flip-Flop B (CLR B)

Pin 14: J input for Flip-Flop B (J B)

Pin 18: Vcc (Positive power supply voltage)

How to use 74LS107 Dual J-K Flip-Flop?

The 74LS107 is a dual H-K flip-flop IC that contains two Independent flip-flops in a single package. Here are the steps to use it.

Step 1- Attach pins 14 and 7 to a positive voltage source (+5V) and ground, respectively, to power the IC (GND).

Step 2- Decide on the input values: There are two inputs for the flip-flops: J (pin 1) and K. (pin 2).

Based on the results you want, you must set the initial values of these inputs. Switches or other digital logic parts can be used to link the inputs to logic high (+5V) or logic low (GND).

Step 3- Clock signal: Connect the clock input (pin 3) to a clock source, such as a 555 timer or an oscillator. The clock input triggers the flip-flop to change its output based on the values of J and K.

Step 4 – Output: The outputs of the flip-flops are Q (pin 5) and Q’ (pin 6). These outputs will change based on the clock input and the values of J and K.

Step 5- Reset: The reset input (pin 4) can be used to reset the flip-flop to a specific state. When the reset input is high, the outputs will be reset to a predetermined state, usually Q=0 and Q’=1.

Step 4 – Repeat: Repeat steps 2-5 for the second flip-flop on the IC.

Note – The 74LS107 is an active-low device, which means that a low signal (0V) rather than a high signal (+5V) triggers the inputs and the reset signal. You must therefore take this into account while using this IC and link the inputs and reset the signal appropriately.

Here are a few 74LS107 Alternatives

A dual JK flip-flop integrated circuit from the 74LS series of TTL logic circuits, the 74LS107. Here are a few alternatives to the 74LS107 that you might want to take into account:

74LS76: This is a dual JK flip-flop with a similar pinout and functionality to the 74LS107.

74LS73: This is a dual JK flip-flop with a different pinout than the 74LS107, but with the same functionality.

74LS109: This is a dual JK flip-flop with preset and clear inputs, which the 74LS107 does not have.

74LS112: This is a dual JK flip-flop with a different pinout than the 74LS107, but with the same functionality.

74LS174: This is a hex D flip-flop with a different functionality than the JK flip-flop of the 74LS107, but it may be a suitable alternative for certain applications.

It is important to remember that the precise solution you select will depend on your unique objectives and demands. Before making a choice, be careful to review the datasheets for each IC and compare their specifications.

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