CD74HC194M

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The CD74HC194M is a 4-bit universal shift register that is useful for many applications. It is a member of the HC family of integrated Logic - Shift Registers, and is used in applications where rapid data processing and conversion of Serial-to-Parallel signals or vice versa is required. The CD54HC140 has the capability of providing an 8-bit bidirectional shift register as used in some microcontrollers and general application. The CD74HC194M is used to provide bidirectional serial-to-parallel or parallel to serial data transfers, allowing for multiple data fields to be used simultaneously in a single application. The CD74HC194M can be used in multiplexers, counters, comparators, storage registers, encoders, and decoders. It is also capable of providing a synchronous parallel-to-serial signal conversion.

The CD74HC194Mapplicationfield andworkingprinciplecomprisetwo primary segments, the data storage register (the "core") and the data transfer portions. The core consists of four individual shift registers, each containing four circuit elements. The four elements are connected in series, and the circuit elements apply specific logic functions as the shift register is clocked. The CD74HC194M features an internal clock that can be used to shift data from each of the four registers. This clock can be set to the desired rate and can be used to output a serial signal of suitable frequency.

The parallel data input portion of the CD74HC194M is made up of four separate shift registers. When a data signal is applied to the data inputs, the value of the signal is shifted one bit to the left. The data output of the register is a multiplexed signal providing simultaneous access to the data from all four of the registers. This allows for multiple data fields to be addressed at different times during a single application.

The CD74HC194M also utilizes an asynchronous clear input. This input can be set to a logic high or low, controlling the state of all latch elements and the data output. This input can be used to clear all data in the registers, or reset to its initial stable state after being reset.

The register can be used in applications such as alpha-numeric displays, motor controllers, and PC storage registers. The CD74HC194M is ideal for applications that require a multi-bit serial-to-parallel or parallel-to-serial signal conversion. It is also capable of providing an 8-bit bidirectional shift register for use in some microcontrollers and general applications.

In summary, the CD74HC194M application field and working principles are useful for many applications including multiplexers, counters, comparators, storage registers, encoders, and decoders. It is also capable of providing an 8-bit bidirectional shift register for use in some microcontrollers and general application. It features an internal clock for data shifting and an asynchronous clear input for resetting. It is suitable for alpha-numeric displays, motor controller, and PC storage registers.

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