MC74AC139D

Series:	74AC
Packaging:	Tube
Part Status:	Obsolete
Type:	Decoder/Demultiplexer
Circuit:	1 x 2:4
Independent Circuits:	2
Current - Output High, Low:	24mA, 24mA
Voltage Supply Source:	Single Supply
Voltage - Supply:	2 V ~ 6 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:	74AC139

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AC circuits are essential components in almost any electronic device, and signal switches, multiplexers and decoders play a major role in AC circuit design. The MC74AC139D is a three-in-one signal switch, multiplexer and decoder, providing an easy and effective way of incorporating different types of AC circuits into your device.The MC74AC139D is an 8-bit signal switch/multiplexer. It is designed as an 8-bit bus and is programmable by the user to switch inputs and outputs, multiplexing circuits and decoding digital signals. The switch features two 8-bit inputs and two 8-bit outputs. It is configured using two select lines, which determine the mode of operation.The Switch Mode switch determines whether the switch is operating in a signal switch mode or a multiplexer mode. In signal switch mode, the switch uses two sets of 8-bit input lines to switch 8 digital signals between two sets of 8-bit output lines. When the Switch Mode switch is in multiplexer mode, the switch uses two sets of 8-bit input lines as a multiplexer, where a single input line is selected and routed to a single output line.The Decoder Mode switch determines whether the switch is operating in a decoder mode or a data selector mode. In decoder mode, the switch uses two sets of 8-bit input lines to decode 8 digital signals into a single 8-bit output. When the Decoder Mode switch is set to data selector mode, the switch uses a single input line to select one of four outputs.The MC74AC139D is a fully integrated solution allowing users to combine multiplexing and decoding into a single switch, eliminating the need for separate multiplexers and decoders. It is applicable for a variety of applications including the switching of digital audio and video, routing of digital data and timing, and interfacing with DSPs, ADCs, and DACs. The switch supports single-ended logic levels from 3.3V to 5.0V, and is packaged in a dual-in-line format to facilitate easy integration into existing systems.The MC74AC139D is an 8-bit signal switch/multiplexer/decoder hybrid that offers an easy and efficient way of incorporating AC circuits into devices. It is an integrated solution that combines multiplexing and decoding into a single switch, eliminating the need for separate multiplexers and decoders. The switch is useful for a variety of applications including digital audio and video switching, digital data and timing routing, and interfacing with DSPs, ADCs, and DACs. The switch can support standard logic levels from 3.3V to 5.0V, and is packaged in a dual-in-line format for easy integration into existing systems. It is an ideal solution for those who want a cost-effective, efficient way of incorporating AC circuits into their projects.

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