74HC139D,653

Series:	74HC
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Decoder/Demultiplexer
Circuit:	1 x 2:4
Independent Circuits:	2
Current - Output High, Low:	5.2mA, 5.2mA
Voltage Supply Source:	Single Supply
Voltage - Supply:	2 V ~ 6 V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	16-SO
Base Part Number:	74HC139

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<p>The 74HC139D and 653 are both logic signal switches, multiplexers, and decoders. They are both electronic components used in many electronic circuits to make connections and enable different types of operations. The 74HC139D is a one-of-eight decoder/demultiplexer while the 653 is a three-of-eight decoder/demultiplexer.</p><p>The 74HC139D is usually used in applications where digital signals need to be switched between multiple outputs or when a signal needs to be selected based on the contents of a multi-bit digital signal. It can be used in digital logic circuits such as logic gates and logic functions. The 74HC139D features eight active low control inputs and eight active low data inputs, with active low outputs.</p><p>The 653 is similar to the 74HC139D in that it has 8 active low data inputs, 8 active low control inputs, and 8 active low outputs. It has the added feature of having selectable data inputs, allowing the user more flexibility when designing digital logic circuits. The 653 is also often used in applications where logic signals need to be multiplexed, as it can select between up to three inputs to output a single signal.</p><p>Both the 74HC139D and 653 are used in many applications due to their low cost and their ease of use. They are both used in digital logic circuits to make connections between component signals and allow for various operations. The 74HC139D may be used to switch digital signals between multiple outputs or to select signals based on the contents of a multi-bit signal while the 653 can be used to multiplex signals.</p><p>The working principle of both the 74HC139D and 653 is based on the same concept: a voltage signal is applied to the active low control inputs and the active low data inputs, which will then transfer their signals to the active low outputs. Depending on the input signal applied, different outputs will be enabled. For example, the 74HC139D is a one-of-eight decoder and can select one of eight data inputs, while the 653 is a three-of-eight decoder and can select three of the eight data inputs.</p><p>The 74HC139D and 653 are both cost-effective and useful signal switches, multiplexers, and decoders. They can be used in many digital logic circuits to make connections between component signals, switch digital signals between multiple outputs, and select signals based on the contents of a multi-bit signal. They are versatile and reliable logic components, providing a cost-effective solution for many different applications.</p>

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