SN74LV595ARGYRG4

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Logic - Shift Registers are digital components that use sequential control circuitry to cycle through a binary pattern. The SN74LV595ARGYRG4 is one such shift register, which is manufactured by Texas Instruments and used in a range of industrial, consumer and automotive applications. This article will discuss its application field and working principle.

Application Fields of SN74LV595ARGYRG4

The SN74LV595ARGYRG4 operates off of a single 5V supply and is fully compatible with the 5V logic range. It can interface directly with CMOS, TTL, or low-power Schottky logic. The shift register is a 47-bit length device built on TI’s advanced low voltage silicon gate BiCMOS process.This shift register is used in applications such as data communications, system management, feedback control, audio/video systems, automotive electronics and signal recognition. Its loadable shift register function enables users to load and determine sequences, and its multiplexed output can send out data directly without a latch.The SN74LV595ARGYRG4 is also characterized for operation over the temperature range of 0 - 70℃ and is available in TSSOP-14 package as well as surface mount packages.

Working Principle of SN74LV595ARGYRG4

The SN74LV595ARGYRG4 has two operating modes, the Serial in/Serial Out (SiSo) mode, and the Serial in/Parallel Out (SiPo) mode. In the SiSo mode data is loaded into the register in a serial manner. This is done by connecting the clock (CLK) pin to either a digital logic signal, or an oscillator. The logic signal can be a simple square wave, saw-tooth wave, or something more complex.For the SiPo mode, data is loaded in a parallel manner, meaning data is loaded in to the register at the same time, rather than one bit at a time. This is done by loading the data into the 8 “parallel” data pins and then latching it into the register by pulsing the clock pin.Once the data is loaded into the shift register in either mode, it can then be shifted out of the register bit by bit. The data is shifted to the output (QA Pin) bit by bit on each clock pulse. The register has a shift direction select DIR pin, which determines whether the data is shifted left or right.The SN74LV595ARGYRG4 also has an output enable pin (OE) which can be used to prevent the output from changing when the register is shifted. When OE is high, the register output does not change, making it an essential feature for data communication applications.

Conclusion

A shift registers are an important building block of digital circuits. The SN74LV595ARGYRG4 from Texas Instruments is a shift register designed to operate off of a single 5V supply and works with a range of logic. This article has provided an overview of the SN74LV595ARGYRG4’s application fields and how the device works.

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