CD74HC195PW

Series:	74HC
Packaging:	Tube
Part Status:	Active
Logic Type:	Register, Bidirectional
Output Type:	Complementary
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:	74HC195

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Introduction

CD74HC195PW is a 4-bit, parallel-load and serial-in/serial-out shift register one-chip logic integrated circuit with three-state outputs. It is one of the most popular serial-in/serial-out shift registers and is commonly used in Logic – Shift Registers applications.

Application Field

CD74HC195PW is widely used in Logic–Shift Registers applications such as fingerprint identification, safety control systems, robotic controls, security systems, embedded systems, POS systems and RFID. It can also be used in data transmission and signal conversion applications such as serial communication, data buffer, data coding and serial data transmission.

Working Principle

CD74HC195PW is a serial-in. serial-out shift register. When data is entering the register, the first bit is the first the register will register and then the bits will successively enter the serially adjacent bits on the right. The parallel inputs load the data into the register immediately.The logic levels of the outputs will depend on what type of configuration is set up. In the 3-state configuration, the inputs A - D are used to set up the logic levels at the outputs accordingly. In this mode, the outputs will only drive the outputs when the Parallel-Load (PL) is High and A-D have valid input signals.The most common application for the register is to shift the data bits one position to the right for every clock pulse. For the following timing diagram, the parallel inputs are all connected low.

Conclusion

CD74HC195PW is a versatile logic chip used in many applications such as fingerprint identification, safety control systems, robotic controls, security systems, embedded systems, POS systems and RFID. Its 4-bit, parallel-load and serial-in/serial-out shift register one-chip logic integrated circuit with three-state output makes it one of the most popular serial-in/serial-out shift registers. Its working principle involves the parallel input for loading the data and serial shifting for data transmission and signal conversion.

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