74AHC595S16-13 Integrated Circuits (ICs)

Series:	74AHC
Packaging:	Tape & Reel (TR)
Part Status:	Active
Logic Type:	Shift Register
Output Type:	Tri-State
Number of Elements:	1
Number of Bits per Element:	8
Function:	Serial to Parallel, Serial
Voltage - Supply:	2 V ~ 5.5 V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	16-SO
Base Part Number:	74AHC595

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Introduction

In the field of digital design, shift registers are frequently used to transfer data from one location to another. One of the most popular devices for this purpose is the 74AHC595S16-13 shift register, which provides a 16-bit shift register with 13 control inputs. This device is available in a dual-in-line package, with a choice of either an SOIC-16 or a SN74Q181 package.

Operation Overview

The 74AHC595S16-13 shift register is capable of transferring digital information from one source to another over a single clock pulse. The register can be loaded with data from any source, including RAM, ROM, test systems, or multiplexers. The 74AHC595S16-13 can also be used to isolate data sources and to serialize data output.The sixteenth bit of the shift register is used as an output enable (OE) bit, allowing the output of the register to be controlled externally. This feature makes the 74AHC595S16-13 very useful for driving output devices such as light emitting diodes (LEDs), LCD displays, and motor drivers.In addition to transferring data between two points, the 74AHC595S16-13 can be used for pattern recognition and data manipulation.

Pin Configurations

The 74AHC595S16-13 shift register has a total of 23 pins, which are divided into three groups.The first group contains the control signals. These pins are used to control the operation of the 74AHC595S16-13. They include the register clock (RCK), serial clock (SCK), load (LD), and output enable (OE).The second group contains the data inputs. These pins are used to load data into the register. They include the serial data (SD), data latch (DL), and transfer clock (TC).The third group contains the data outputs. These pins are used to output the data stored in the register. They include the Q0–Q15 outputs.

Working Principle

The 74AHC595S16-13 utilizes the concept of serial data entry and parallel data output. Data is entered into the shift register one bit at a time, using the serial data input pin (SD).When the serial clock (SCK) is pulsed, the data on the SD pin is shifted into the register. The register can be clocked in as many times as necessary to enter all 16 bits of data.Once all the data has been loaded into the register, the data latch (DL) pin is pulsed, and the data stored in the register is transferred to the output pins (Q0–Q15). By controlling the number of clock pulses and the timing of the latch pulse, data can be read out of the register one bit at a time, or all at once.

Conclusion

The 74AHC595S16-13 shift register is a versatile device that can be used to transfer data from one point to another, as well as for pattern recognition and data manipulation. With its 13 control inputs, the device can easily be integrated into any existing system, providing wide flexibility for digital designers.

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