CD74HC194PWR

Series:	74HC
Packaging:	Tape & Reel (TR)
Part Status:	Active
Logic Type:	Register, Bidirectional
Output Type:	Push-Pull
Number of Elements:	1
Number of Bits per Element:	4
Function:	Universal
Voltage - Supply:	2 V ~ 6 V
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	16-TSSOP
Base Part Number:	74HC194

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CD74HC194PWR Logic-Shift Registers

The CD74HC194PWR is an 8-bit serial-in/parallel-out shift register designed with a parallel enable (PE) Control input. It operates from a single supply. This shift register has very high speed and low power consumption during operation. This shift register is used in many applications such as serial-to-parallel conversion, control signal demultiplexing, and display decoders.

Overview of the CD74HC194PWR

The CD74HC194PWR is a serial-in/parallel-out shift register made up of an 8-bit shift register, two 8-bit latches, and two 3-state output buffer. This shift register has four control inputs: serial data (SDI), clock (CLK), parallel enable (PE) and control inputs (CTR), and a serial data output (SDO). The SDI, CLK and CTR inputs determine the shift range (1 to 8 bits), and the PE input allows for parallel loading. The PE input is activated by a low voltage level and is necessary for controlling the shift register. The 3-state outputs of the CD74HC194PWR provide a high fan out for more reliable pointing, and the device allows for individual strobing of the data lines.

Applications of the CD74HC194PWR

The CD74HC194PWR can be used in a variety of applications where data transfer, demultiplexing, or decoder functions are needed. Some of the applications include serial-to-parallel conversion, data transfer and assertion control, code conversion, display demultiplexing and decoder, industrial monitors and control systems, speed, direction and acceleration control, signal demultiplexing, and pattern recognition.The device is also used in modern applications such as ATM machines, automotive and medical applications, testing equipment, and voice and data communications. The CD74HC194PWR is an ideal choice for these applications because of its low-power operation and high speed operation.

Working Principle of the CD74HC194PWR

The CD74HC194PWR has four control inputs: serial data (SDI), clock (CLK), parallel enable (PE) and control inputs (CTR), and a serial data output (SDO). The shift register is designed to operate from a single supply. The shift register works by continuously shifting data from left to right, making it possible to convert an inputted serial stream into an 8-bit wide parallel output.The CLK input allows for synchronization of the shift register and the parallel enable (PE) input allows the register to read the 8-bit data stream simultaneously. When the PE input is low, the data loaded on the shift register is transferred to the internal 8-bit latches. The CTR input adjusts the rate of shift and the SDI input determines the data stream loaded on the shift register. The SDO pin is an output pin that outputs the contents of the shift register continuously as a serial stream. The shift register has a very high speed, low static power consumption, and is capable of being used with a wide range of CMOS logic gates.

Conclusion

The CD74HC194PWR is a high-speed, low-power CMOS logic-shift register designed for a variety of applications where data transfer, demultiplexing, or decoder functions are needed. The 4-input control inputs allow the shift register to decode serial input data and transfer it to a parallel output while decreasing power consumption and offering a higher speed operation. The device is suitable for modern applications such as ATM machines, automotive and medical applications, testing equipment, and voice and data communications.

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