74LVC273PW/AUJ

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• Introduction

The 74LVC273PW/AUJ is an octal D-type Latch/Flip-Flop integrated circuit (IC) used in digital logic designs such as computers, microprocessors, and other systems where a digital “yes” or “no” control is required. It is an 8-bit device that works in combination with other ICs to store binary data and control the data flow. This device contains latches to store a group of “1”s or “0”s, and flip-flops to toggle based on input signals.

• Application field

Due to their low cost and reliable performance, 74LVC273PW/AUJ are widely used for a wide range of applications including computers, microprocessors, electronic control systems, data switching and distribution systems, memory systems, and communications systems. An example of one application is mobile phones, where the latch is used to latch the display to the processor while the flip-flop is used to communicate with the processor core and provide the display a continuous status of the processor in order to maintain a stable display screen. Other applications where the 74LVC273PW/AUJ is used are digital cameras, alarm systems, industrial automation systems, embedded systems, and digital clocks.

• Working principle

The 74LVC273PW/AUJ IC is a latch-type flip-flop device, comprising two groups of four - 4bit latches, arranged together in parallel and a total of eight flip-flops. Each latch contains four data inputs (inputs 0 to 3), four enable inputs (active high and low) and four outputs (output 0 to 3). A single T-type flip-flop is composed of an inverted output (Q), and a Non-inverted output (Q’), a data input (D) and an enable input (E). When the enable input is ‘high’, the data input becomes the output signal, while if the enable input is ‘low’, the data signal is ignored. The latch operates similarly, with the enable signal controlling the capability of the circuit to recognize the data input and set the output accordingly. The 74LVC273PW/AUJ IC also has an output-enable signal which is used to disable the outputs of both, the latch and the flip-flop.

• Conclusion

The 74LVC273PW/AUJ is a reliable, cost effective logic IC and is currently being used in a wide range of applications. With four data inputs, and eight outputs, the device is ideally suited for digital systems where a binary decision is required. The two groups of four latches and eight flip-flops make it a highly efficient device, particularly when used in conjunction with other ICs to store binary data and control the data flow.

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