MC74VHCT74ADR2G

Introduction

The MC74VHCT74ADR2G is a logic device in the Logic – Flip Flop category. This circuit combines two sets of D type flip-flops with separate clock inputs (CP and CP′) and a Clear-to-HIGH common reset which override both Clock inputs. Both sides of this dual flip-flop have independent sets, resets, and clock inputs that allow both sides of the circuit to be operated simultaneously.

Application Field

The MC74VHCT74ADR2G is suitable for general purpose applications such as shift registers, counters and multiplexers. It can also be used to store a single bit of data for clocked applications, as well as for device timing, phase shifting, pulse counting, pulse detection, pulse generation, pulse shaping and pulse width modulation.

The MC74VHCT74ADR2G can also be used in arithmetic circuits, flip-flop memory, the serial-to-parallel movement of data, and synchronous binary ripple counters. This device can be employed in applications such as power supply voltage monitoring, toggles, and instant on/off control circuits. It can also be used in high discharge current switching, and capacitive and resistive voltage sensing.

Working Principle

The MC74VHCT74ADR2G consists of two flip-flops coupled in a single package. These flip-flops operate in a standard D-type mode, with one data input (D) and one output (Q). When a logic high level (1) is applied to the data input (D), the output (Q) shall be opposite of the input and a low level (0) on the data input shall cause the output to be the same as the input.

The two flip-flops are independently clocked by two separate Clock inputs (CP and CP′). When a rising edge is applied to either of the Clock inputs, the data input at that same time is transferred to the output of the flip-flop. This allows for a data transfer from one flip-flop to the other.

The flip-flop’s output can also be reset to a LOW level by applying a Logic HIGH level to the common reset (R) input. This will cause both of the flip-flop’s outputs to reset to LOW regardless of the data input. The reset input has priority so the Clock inputs will be unresponsive until it returns back to a LOW level.

Summary

The MC74VHCT74ADR2G is logic device in the Logic – Flip Flop category. It is generally used for applications such as shift registers, counters, multiplexers and clocked applications. The working principle of this device is based on two Flip-Flops with two separate Clock inputs and a common reset that overrides both Clock inputs. This device can be employed in arithmetic circuits, flip-flop memory, serial-to-parallel movements of data and synchronous binary ripple counters.