74ACT157SCX

Series:	74ACT
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Type:	Multiplexer
Circuit:	4 x 2:1
Independent Circuits:	1
Current - Output High, Low:	24mA, 24mA
Voltage Supply Source:	Single Supply
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	16-SOIC
Base Part Number:	74ACT157

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74ACT157SCX Application Field and Working Principle

The 74ACT157SCX, also known as a 1 of 4 data selector/multiplexer, is a type of multiplexer produced by Texas Instruments to allow users to route or input signals to different peripherals, like a router might route internet traffic. It is a member of the 74ACT157x family, each of which uses 4 individually selectable channels to route input signals. The “SCX” variant has low-power output drivers, making it stand out from other 74ACT157x models.The 74ACT157SCX is designed for 3.3V and 5V applications, making it ideal for use in Peripheral Component Interconnect (PCI) Express, Grand Universal Serial Bus (GUSB), SATA, and PCI-X applications. It is also used for newer technologies such as mobile phones, PDAs, and embedded systems. Each channel can be individually enabled and disabled, allowing users to route input signals to different peripherals or interfaces.In a traditional application, the 74ACT157SCX would sit between a controller and multiplexer, allowing the transmission of data to a variety of different peripherals. The four channels on the multiplexer are connected to either data or control pins on the controller. The controller can then select which of the four channels to use to route the signal/data.The working principle of this multiplexer is fairly simple. On the data input side, each channel is configured with two inputs: a Data Input (DI) and a Channel Input (CI). When the CI input is low, the DI input is ignored and the data input is routed to the relevant channel output. This gives the user the ability to select which channel will accept data input.The output side of the multiplexer is similarly simple. Whenever the CI input is low, the channel output is transmitted to the multiplexer’s output pin. This gives the user the ability to select which of the four channels are outputting data. The 74ACT157SCX is an extremely versatile device. It is suitable for a wide variety of applications, from low-speed digital data transceivers to consumer electronics. With its low-power output drivers, it is the perfect choice for high-data-rate and high-speed applications such as consumer electronics, medical equipment, and wireless communications. Another advantage of the 74ACT157SCX multiplexer is its low-power consumption. Although the power consumption varies depending on the application, it usually only requires a few milliwatts of power, making it suitable for applications that need to save on power consumption. Overall, the 74ACT157SCX is an efficient and versatile multiplexer that can be used for a wide variety of applications. With its low-power output drivers, it is the perfect choice for high-data-rate and high-speed applications like consumer electronics, medical equipment, and wireless communications.

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