SN74HC251N

Series:	74HC
Packaging:	Tube
Part Status:	Active
Type:	Multiplexer
Circuit:	1 x 8:1
Independent Circuits:	1
Current - Output High, Low:	7.8mA, 7.8mA
Voltage Supply Source:	Single Supply
Voltage - Supply:	2 V ~ 6 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Through Hole
Package / Case:	16-DIP (0.300", 7.62mm)
Supplier Device Package:	16-PDIP
Base Part Number:	74HC251

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Logic-Signal Switches, Multiplexers, Decoders can be found in a wide range of products. The SN74HC251N is a type of this type of device, designed to provide additional features and functions to existing products or systems.The SN74HC251N is a 8 bit multiplexer/demultiplexer, an integrated circuit that is used to switch signals by enabling or disabling various blocks of different signals. It consists of four select bits, four data input lines, and eight output lines organized into two 4 output multiplexers. Their main function is to either combine multiple input signals into one output line or separate an incoming signal into multiple output lines.In terms of its application field, the SN74HC251N is mainly used in communications, networks, electronic projects and other areas, such as the digital audio receiver circuit, digital video receiver circuit, TV receiver circuit and other digital circuits. In particular, this multiplexer/demultiplexer is often used to connect 8-bit digital audio, video, and TV signals to their respective input devices.This multiplexer/demultiplexer can be used to route data signals from one place to another in a very efficient manner. For example, the SN74HC251N can be used to send multiple 8-bit signals from a computer to different outputs without having to manually construct each connection.How does the SN74HC251N work?The SN74HC251N has four select bits, which are used to choose one of the eight inputs and output a single 4-bit bus by connecting it to any of the outputs. The first two select bits (S0 and S1) are used to select a row of four inputs and the next two (S2 and S3) are used to select a column of four outputs. Each of the four bits is addressed individually, so that each individual bit can be output.When the chip is turned on, the SN74HC251N needs to be initialized. This is done by connecting the S0 and S1 select bits to either HIGH or LOW, depending on which row of the input signals needs to be read. After the chip is initialized, it can then be used to read the inputs by selecting the desired input row and outputting the data on the output bus.The SN74HC251N is a very useful device and can be used in many applications. It can connect two sequences of four digital signals, connecting the data inputs of a digital circuit to the outputs with ease. It also allows for selective routing of signals, allowing for efficient signal routing and data manipulation.

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