CD74HC139ME4

Series:	74HC
Packaging:	Tube
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:	-55°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	16-SOIC
Base Part Number:	74HC139

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CD74HC139ME4 is a dual 2-to-4 line decoder/demultiplexer manufactured by Texas Instruments. It is an integrated circuit that has two address inputs, A0 and A1, four data inputs, D0 through D3, an enable input, and four output enable outputs, Y0 through Y3. The two address inputs are used to select one of the four data inputs. The enable input, when enabled, will enable the selected data input to be passed to its corresponding output enable output. This device is most commonly used as a signal switch, multiplexer, and decoder in digital systems. The operation of the CD74HC139ME4 is based on combinational logic. The two address inputs are used to select one of the four data inputs. When the enable signal is enabled, the data selected by the address inputs is passed to its corresponding output enable output. If there is no enable signal, then all of the output enable outputs will be disabled. Each output enable signal is active-low, meaning that when the enable signal is enabled the corresponding output enable signal will be active. The CD74HC139ME4 can be used for most any multiplexing application where only one of many signals needs to be enabled at a given time. In addition, this device can be used as a signal switch or as a decoder in digital systems. The CD74HC139ME4 operates over a wide temperature range of -55°C to +125°C. It comes in a small 16-pin plastic dual-in-line package (PDIP) and is available in multiple packages including a tiny 8-pin plastic surface mount package (TSSOP). CD74HC139ME4 is also available in a Rail-to-Rail version that has an extended supply voltage range. The CD74HC139ME4 can be used as a signal switch and multiplexer in digital systems. It can be used to control the pass through of data from one input to multiple outputs or multiplex a single input onto the one output it is designed to control. This device is also useful for applications that require the decoder or demultiplexing of signals. This can be achieved by using the device’s address input to select the data input that is to be passed through to the corresponding output enable signal. In conclusion, the CD74HC139ME4 is a versatile dual 2-to-4 line decoder/demultiplexer. It is a useful logic device that can be used as a signal switch, multiplexer, and decoder in digital systems. It can be used to multiplex a single input or to decode a single one of multiple inputs and pass it through to the corresponding output. It operates over a wide temperature range and can be found in multiple packages.

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