Series:	3VH
Packaging:	Tube
Part Status:	Active
Type:	Bus Switch
Circuit:	1 x 4:1
Independent Circuits:	1
Current - Output High, Low:	--
Voltage Supply Source:	Single Supply
Voltage - Supply:	2.3 V ~ 3.6 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	14-SOIC
Base Part Number:	3VH126

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Logic - Signal Switches, Multiplexers, Decoders

The QS3VH126S1G is a logic device that is mainly used to switch, multiplex, and decode signals. It consists of a three-input CMOS multiplexer, a multi-output decoder, and a 4 to 1 multiplexer with a data latch. This device can easily be programmed for many applications including that of a multiplexer, decoder or switch.

Usage and Applications

The QS3VH126S1G is an ideal device for switching, multiplexing, and decoding signals. It can be used in a number of ways, including switching between two different digital signals, multiplexing digital signals, decoding multiple digital signals, and decoding multi-bit digital signals.The QS3VH126S1G can also be used for switching analogue signals and for digital to analogue conversion. The multiplexer is especially useful for this due to its low power consumption and simplicity.The QS3VH126S1G is also commonly used in high speed logic designs and as a control/feedback device in microprocessors. Its low power consumption and high speed make it well suited to these applications.In addition, the QS3VH126S1G is used in a variety of communication applications, such as in the implementation of error detection and correction in communication protocols.

Working Principle

The QS3VH126S1G is a CMOS device with three main components; a three-input multiplexer, an 8-bit decoder, and a 4-to-1 multiplexer with data latch. The multiplexer is used to select one of three inputs and pass the associated signal through to the output. The decoder is used to decode and process digital signals, while the 4-to-1 multiplexer with data latch is used to provide a data input path for the device.The multiplexer has three inputs and one output, with the logic table being:
In1 In2 In3 Out
0 0 0 0
0 0 1 1
0 1 0 2
0 1 1 3
1 0 0 4
1 0 1 5
1 1 0 6
1 1 1 7 The decoder can be used to decode multiple digital inputs. It has nine outputs, where each output is associated with a specific input. The logic table is:
In1 In2 Out
0 0 0
0 1 1
1 0 2
1 1 3
The 4-to-1 multiplexer with data latch is used to provide a data input path for the device. It has four inputs and one output, with the logic table being:
In1 In2 In3 In4 Out
0 0 0 0 0
0 0 0 1 1
0 0 1 0 2
0 0 1 1 3
0 1 0 0 4
0 1 0 1 5
0 1 1 0 6
0 1 1 1 7The QS3VH126S1G can be programmed to become a switch, multiplexer, and decoder. The programming is done via input signals, selecting the multiplexer inputs, setting the data latch high or low depending on the state of the decoder outputs, and setting the data latch to one of the four values as set in the multiplexer logic table.

Conclusion

The QS3VH126S1G is a versatile logic device that is used to switch, multiplex, and decode signals. It consists of a three-input CMOS multiplexer, a multi-output decoder, and a 4-to-1 multiplexer with a data latch. It is used in a variety of applications, from switching digital and analogue signals to digital to analogue conversions. It is also used in microprocessors and communication protocols for error detection and correction. The programming of the QS3VH126S1G is done via input signals, selecting the multiplexer inputs, setting the data latch high or low depending on the state of the decoder outputs, and setting the data latch to one of the four values as set in the multiplexer logic table.

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