74LV165PW,112

Series:	74LV
Packaging:	Tube
Part Status:	Active
Logic Type:	Shift Register
Output Type:	Complementary
Number of Elements:	1
Number of Bits per Element:	8
Function:	Parallel or Serial to Serial
Voltage - Supply:	1 V ~ 5.5 V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	16-TSSOP
Base Part Number:	74LV165

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74LV165PW,112 Application Field and Working Principle

The 74LV165PW,112 is a medium-speed, 8-bit parallel-in/parallel-out(PIPO) shift register. It belongs to the Logic - Shift Registers family of logic devices. The 74LV165PW,112 is typically used for memory expansion, data transmission and device cascading.

Features

The 74LV165PW,112 is relatively small compared to other register types, maximizing board space. Its built-in capability for up to three registers deep cascading, allows for larger multi-register operations. The device also includes a gated clock input, allowing for a wider range of shifting configurations. Additional features include a buffered output (100MHz), overall power dissipation of less than .5mW, and an operating temperature range of -40 to 125C.

Application Field

The 74LV165PW,112 is most commonly used in applications requiring a register that can hold and access large amounts of data in a small, efficient package. It can be used in applications ranging from communication systems to robotic processors metrology tools. It is also ideal for signal processing and communication applications. The flexibility of the 74LV165PW,112, to shift the data in eight parallel ports, allows signal integrity to be maintained while the data is processed. Examples of signal processing applications include signal encoding/decoding and multiplexing/demultiplexing.

Working Principle

The 74LV165PW,112 integrates every sequential logic block necessary for parallel load register operation. Eight D-type flip-flops are connected in cascade, with the Q output of each flip-flop connected to the D input of the next flip-flop in a sequence.External inputs allow for parallel loading of the register from the data input pins, and a clock input enables the register to shift the data along the cascade of the flip-flops. The data at the output of the last flip-flop is available at the 74LV165PW,112 register’s output pins.The 74LV165PW,112 can also be configured to operate in a “shift right” or “shift left” mode. In “shift right” operation, data is shifted out of the register at the MSB (most significant bit) position while data is shifted into the register at the LSB (least significant bit) position.In “shift left” mode, data is shifted out at the LSB position and data is shifted into the register at the MSB position. The register can also be configured to have a length of one bit, in which case it functions as a shift register.The 74LV165PW,112 can also support multiple register cascading which will allow for larger multi-register operations. This can be done by simply connecting the output of the current register to the serial data input of the next register.

Conclusion

The 74LV165PW,112 is an efficient, low-power 8-bit parallel-in/parallel-out register that is ideal for signal processing and communication applications. Its built-in features include a gated clock input, buffered output, and cascading capability. Additionally, its low power consumption and small form factor are ideal for apps requiring a compact design.

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