SN74AHCT595NSR

Series:	74AHCT
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
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:	4.5 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.209", 5.30mm Width)
Supplier Device Package:	16-SO
Base Part Number:	74AHCT595

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Introduction

The SN74AHCT595NSR shift register (referred to hereafter as the SN74AHCT595) is a series of Logic - Shift Registers produced by Texas Instruments. The SN74AHCT595 is made from standard CMOS logic, and is an 8-bit serial-in/serial-out shift register with parallel output capabilities. It is specifically designed to allow parallel data output with minimal power consumption, while still keeping data in synchrony. This makes the SN74AHCT595 an ideal choice for applications that require multiple data signals to be output with minimal power usage.

Applications

The SN74AHCT595 is used in applications requiring serial-in/parallel-out shift register capability. It is often used in industrial process controllers, automotive navigation systems, motor control systems, and data acquisition systems. The SN74AHCT595 is well suited for applications that require the simultaneous output of multiple signals, as it is capable of simultaneously outputting 8 parallel signals with minimal power usage. In addition, the SN74AHCT595 is frequently used in embedded systems, such as real-time clocks and other custom systems.

Pinout

The SN74AHCT595 is an 8-pin COS package with the following pin assignment:

• Pin 1: Ground (GND)
• Pin 2: Clock (CLK)
• Pin 3: Storage Clock (SCK)
• Pin 4: Reset (RST)
• Pin 5: Output Enable (OE)
• Pin 6: Serial Output (SEROUT)
• Pin 7: Serial Input (SERIN)
• Pin 8: Output (OUT)

Working Principle

The SN74AHCT595 shift register is synchronous, meaning it uses clock cycles to shift data through the register. When the SN74AHCT595 is enabled (OE pin is low), the register holds the data in place and simultaneously outputs this data through the output pins (OUT) on each clock cycle. When disabled (OE pin is high), the register’s output pins remain in the same state as the last valid data was output. When the SCK pin is low, the register is enabled and the data can be shifted through the register. The data is shifted through the register on the rising edge of the SCK pin. The SN74AHCT595 can be connected to a microcontroller or other device, and data can be shifted into the register by sending a serial data stream to the SERIN pin. The data can then be read out of the register by clocking the SEROUT pin, which outputs the data as a serial data stream. This makes it possible to store large amounts of data in the register, and read it out at whatever data rate is necessary. The SN74AHCT595 also has a clock input (CLK), which can be used to synchronize the register’s operation with external devices. The SN74AHCT595 also features a reset pin, which can be used to reset the register’s contents.

Conclusion

The SN74AHCT595 is a versatile and powerful shift register capable of simultaneously outputting eight parallel signals with minimal power usage, while still keeping data in synchrony. This makes the SN74AHCT595 an ideal choice for applications requiring multiple data signals to be output quickly and efficiently. The SN74AHCT595 is used in a wide range of applications, from industrial process controllers, to automotive navigation systems and data acquisition systems.

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