HEF4021BTTJ

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Logic - Shift Registers is a type of data device that can save, store and transfer data bits. Shift registers are widely used in various areas, such as memory, display and other digital systems. HEF4021BTTJ is an 8-bit bidirectional parallel-in/serial-out shift register. This device can be used to extend the data path of 8-level directional input signals and to convert them into a serial outpout data stream.

The application of HEF4021BTTJ is used in any logic system using shift registers. The device is well-suited to construct 8-file register memory registers and allows easy parallel/serial data transfer between registers. It can also be used to construct special circuits such as memory controller and multiplexers. In addition, the device is used to spread the data from one input line to multiple output lines.

The working principle of HEF4021BTTJ is based on the basic principle of shift register. When a clock input is given, the data applied to the input pin is moved to the output in a gradual progression. The data is transferred from the input line to the first output within one positive clock displacement and then the output advances one bit at every positive clock cycle. The device contains an 8-bit parallel-in/serial-out data register that allows data to shift in parallel and shift out serially. The data is loaded in the register when MR (master reset) is high, and is clocked out when CLK (clock) is high.

HEF4021BTTJ is a very useful device for logic construction. It can be used to extend data paths, increase memory capacity and store or transfer data. It is widely used to construct registers, memory controllers and multiplexers. The device works according to the basic principle of shift registers, i.e., data is loaded in the register when MR is high and clocked out when CLK is high.

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