SN74HCT273PWT

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Logic - Flip Flops

The SN74HCT273PWT is a Quad D-type flip-flop integrated circuit that features a very wide power supply range, high noise immunity and low power consumption. This high-performance device is a combination of four synchronous D-type edge-triggered flip-flops, with each flip-flop having D, clock and master reset inputs as well as complement and true outputs. The simplicity and versatility of the SN74HCT273PWT make it a popular choice for applications such as sampling data, storing a data word, resetting counters, generating a time delay, controlling pulse widths and synchronizing digital signals.

Power supply voltage to the SN74HCT273PWT ranges from 2 to 6 V, making it suitable for both low-voltage and high-voltage applications. It also has a very low operating current of 4.5-9.0 mA and has a high noise immunity of up to 25°C. In addition, the device’s built-in output enable input can be used as an asynchronous reset or as a means of disabling a group of flip-flops, simplifying system design.

Working Principle

The SN74HCT273PWT is a synchronous edge-triggered D-type flip-flop. This device uses data (D) and clock (Clk) inputs to capture and remember a digital value. Once the data is latched, it remains in the circuit until it is changed through the application of the clock pulse or reset. The Flip-Flop follows a simple sequence:When the Clock Pulse is High, Data is transferred to the Low-to-High Transition of the Clock Edge (at this point the output begins to switch); When the Data is transferring, the output stays in that state until the Clock Pulse is Low (at which point the Data is Latched); When the Clock Pulse is Low, the Data is not transferred and the Output stays in the same State.

The output of the SN74HCT273PWT can be reset using the master reset (MR) pin, which will hold the flip-flops in their reset state, regardless of the data or clock pulses. This can be useful to simplify design and reset the circuit quickly, without having to send a reset pulse to all of the flip-flops. The complement (Q-bar) and true (Q) outputs function in opposite fashion, in which Q-bar is the inverse of Q, a useful feature when creating bistable circuits, or when creating circuits that need to transfer data in two directions.

Application Fields

The SN74HCT273PWT is widely used in a variety of applications due to its low power consumption and widely ranging power supply voltages. It is commonly used in microprocessors, memory storage, counters and analog-to- digital converters. Its uses are appropriate to applications in digital logic, data communication, instrumentation, microcomputers and automotive electronics.

The SN74HCT273PWT is also used in audio applications, such as sound mixing consoles and audio processors. In this application, the Flip-Flop is used to store the positions of knobs and faders, allowing the user to recall a particular setting at any time. In video applications, this Flip-Flop is used to store the positions of switchers, allowing the user to quickly switch between video sources.

Furthermore, this Flip-Flop is used to pulse width modulate signals, which is the process of continuously changing the duty-cycle of a waveform in order to produce a desired output waveform. This process can be used to control the speed of asynchronous motors, dim lights, or control digital-to-analog converters.

In summary, the SN74HCT273PWT is a very versatile and widely used flip-flop that can be used in a variety of applications. Its small size and low power consumption make it a popular choice for many of today’s applications.

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