SN74HC138QDRG4Q1

Series:	Automotive, AEC-Q100, 74HC
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Decoder/Demultiplexer
Circuit:	1 x 3:8
Independent Circuits:	1
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-SOIC
Base Part Number:	74HC138

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Overview

Logic-Signal Switches, Multiplexers, Decoders are devices which are used to control the flow of digital signals. SN74HC138QDRG4Q1 is one of the devices in this family, and it is an 8-to-1 multiplexer/decoder with 3-bit binary input. In simple terms, it is a logic device that selects one of eight output lines depending on the value of the binary signal applied to the three-bit input. It has 3-bit Binary Inputs and 8 Active Low Outputs.

Features

The main feature of SN74HC138QDRG4Q1 is that it can provide 8-channel data transmission based on 3-bit binary input, making it very suitable for different application fields. It has low power consumption so it is not energy hungry, is compatible with SE or PE versions, uses green packages, and its temperature range spans from -40 ℃ to 85 ℃.

Application Fields

SN74HC138QDRG4Q1 can be used in many different application fields. A few examples are as follows:

• Automatic Control: SN74HC138QDRG4Q1 can be used in automatic control systems to control the flow of an electrical signal. This is useful when multiple signals are used simultaneously and need to be switched without manual intervention.
• Computerized Electronics: SN74HC138QDRG4Q1 is used in computers, such as in controllers for network printers.
• Broadcasting Systems: SN74HC138QDRG4Q1 can be used in television and radio systems, for switching between multiple broadcasting signals.
• Industrial Automation: SN74HC138QDRG4Q1 can also be used in industrial production systems and automation, as it can easily control the flow of an electrical signal.

Working Principle

SN74HC138QDRG4Q1 works on the principle of binary input and output logic switching. When the 3-bit binary input changes, the output signal is switched accordingly. The three input bits IN0 - IN2 will serve as the selecting bits, and each one will decide which one of the 8 lines is chosen. For example, if the three bits IN0, IN1 and IN2 are 0, 0, 1 respectively, then line Can7, the seventh line out of the 8 lines, will be selected. Likewise, if the three bits are 1, 0, 1 then line Can3 will be selected.

Conclusion

SN74HC138QDRG4Q1 is a 3-bit multiplexer/decoder which is suitable for many application fields. It has low power consumption, is compatible with SE or PE versions, uses green packages, and its temperature range spans from -40 ℃ to 85 ℃. It works on the principle of binary input and output logic switching, and is capable of simultaneously controlling the flow of 8 electrical signals.

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