74VHC157MTCX

Series:	74VHC
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Multiplexer
Circuit:	4 x 2:1
Independent Circuits:	1
Current - Output High, Low:	8mA, 8mA
Voltage Supply Source:	Single Supply
Voltage - Supply:	2 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	16-TSSOP
Base Part Number:	74VHC157

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Introduction to 74VHC157MTCX

The 74VHC157MTCX is a logic signal switch and multiplexer/decoder, able to produce high-speed data transfers with low power consumption and low propagation delay. It features a 4-bit parallel bus and a single select input, making it a reliable and flexible device when used as a synchronous or asynchronous mux/demux select switch. The chip has two logic functions, a four-bit multiplexer, and a one-bit de-multiplexer. This logic chip was designed to draw the most positive, reliable and highest performance for a wide range of digital logic applications.

Application Field and Working Principle of 74VHC157MTCX

The 74VHC157MTCX chip is used in a variety of digital logic circuits, particularly in data transmission and digital signal routing. The chip is most commonly found in computer peripheral cards, communications equipment, network systems, and digital data communication applications. To understand the application field and working principle of the 74VHC157MTCX, it is important to understand its two functions.

Four-Bit Multiplexer

The multiplexer is a series of single input, multiple output electronic components. The chip’s multiplexer function is to select one of four data sources and transmit the selected logic value through the single output. The four sources are selected by applying two binary controlled inputs making it possible to select any one of four logic states. The chip’s functionality allows for a multiplexing ratio of 1:4. The multiplexer accepts TTL compatible input sources, as well as low-voltage CMOS signals, while the output is a buffered version of the selected source.

One-Bit De-Multiplexer

The de-multiplexer is similar to the multiplexer but with one output for each data source. By providing the select inputs, the chip can control any one of four logic outputs depending on the two binary controlled inputs. The 74VHC157MTCX’s de-multiplexer allows for a demultiplexing ratio of 1:4 and the inputs are TTL compatible and low-voltage CMOS signals while the output is a buffered version of the selected source.

Conclusion

The 74VHC157MTCX is a versatile, high-speed, and low-power logic signal switch, multiplexer and de-multiplexer. It is capable of providing fast and reliable data transfer in a variety of digital logic applications such as computer peripheral cards, communications equipment, and network systems. Through its 4-bit parallel bus and single select input, the chip is able to select one of the four data sources and transmit the output in either a multiplexer or de-multiplexer configuration.

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