74LVC1G139DCTRE4

Series:	74LVC
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Decoder/Demultiplexer
Circuit:	1 x 2:4
Independent Circuits:	1
Current - Output High, Low:	32mA, 32mA
Voltage Supply Source:	Single Supply
Voltage - Supply:	1.65 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	8-LSSOP, 8-MSOP (0.110", 2.80mm Width)
Supplier Device Package:	SM8 (SSOP)
Base Part Number:	74LVC1G139

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The 74LVC1G139DCTRE4 is a part of a family of high-performance, low-voltage CMOS logic devices that are well-suited for today\'s mixed voltage world. It is specifically designed to support mixed voltage applications. The 74LVC1G139DCTRE4 is a single-chip logic switch, multiplexer and decoder which can help reduce the complexity and cost of many mixed voltage designs.The 74LVC1G139DCTRE4 is programmed to automatically detects high and low logic levels, and can route signals from a single input to three outputs based on the logic level at the input. The device senses low voltage down to 0.5V rail, and can drive load voltages as high as 3.3V rail. It is also offered in tiny footprints and low stand-by current to enable low power applications. The 74LVC1G139DCTRE4 is ideal for today\'s applications that require level shifting for mixed voltage designs. It is highly reliable and consumes very low power, thus making it an ideal choice for mobile data and communications applications.

Application Field

The 74LVC1G139DCTRE4 is primarily used in logic circuit and signal switching applications, as well as multiplexer and decoder applications. Its secure switching and reliable level control makes it popular in automotive, data communications and industrial applications.The operating voltage of the 74LVC1G139DCTRE4 is 2.7V~5V, and it can be used to connect two different functions in two different supply voltage levels without the use of external components. The ability to detect very low voltage levels (0.5V rail) and drive high level voltages (up to 3.3V rail) makes it highly desirable and flexible for many mobile and automotive applications.

Working Principle

The 74LVC1G139DCTRE4 is a single-chip logic switch, multiplexer, and decoder which connects three output ports to a single input port. It works by sensing the logic level of the input supply and switching the corresponding output from one logic level to another. The device uses the Wilson Current Mirror principle to sense the logic level of the input voltage and can detect high logic levels of up to 3.3V rail, and low logic levels down to 0.5V rail. When the voltage level at the input port is above the transition voltage (Vtt/Hyst), the 74LVC1G139DCTRE4 will route the input signal to the corresponding output port. Thus, if the input voltage level is between Vtt and VCC (3.3V rail), the 74LVC1G139DCTRE4 will route the logic high voltage to the corresponding output port. If the input voltage level is below the transition voltage, the device will route the logic low voltage to the corresponding output port.The 74LVC1G139DCTRE4 also has protection against short circuits and other potential device failures. It will automatically go into a protective mode if the load current is too high, ensuring that the device does not suffer damage as a result of excessive current. It also has an output clamped to minimize the output voltage swing and minimize power consumption. The 74LVC1G139DCTRE4\'s low power consumption, secure switching and low voltage operation makes it an ideal choice for mixed voltage and logic circuit applications. Its small size and low cost also makes it an attractive option for any design.

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