MC74VHCT138ADTRG

Series:	74VHCT
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Decoder/Demultiplexer
Circuit:	1 x 3:8
Independent Circuits:	1
Current - Output High, Low:	8mA, 8mA
Voltage Supply Source:	Single Supply
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	16-TSSOP
Base Part Number:	74VHCT138

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Introduction

MC74VHCT138ADTRG is an integrated signal switch logic device manufactured by ON Semiconductor. It is part of the VHCT family of advanced complementary metal oxide semiconductor (CMOS) products. This device has four independent 1-of-8 decoders/drivers, also called multiplexers, with three-state outputs.

Functional Overview

The dual 1-of-8 decoders/drivers in the MC74VHCT138ADTRG are designed to accept three binary variable input signals A0, A1, and A2 and produce one active low output from one of the eight active low output drivers, O0 to O7. Each output is capable of driving either one or two standard TTL loads. OE (Output Enable) is common for both 1-of-8 decoders/drivers and must be a logic High or OPEN, which activates all outputs. The output state is determined by the logic state of the select inputs A0, A1, and A2.The device also has two active-low enable inputs, EN1 and EN2. In order to activate one of the decoders/drivers, both of these input must be a Low or OPEN.

Application Field

The MC74VHCT138ADTRG is an effective logic device used in multiple applications. It is widely used in areas such as telecom, automotive electronics, industrial, and computer systems. It can be used for data transfer and control applications, when low power dissipation and high noise immunity are required. The device is used to multiplex and route data from a single input source to multiple destinations. It is often used in memory interfaces and communication systems, where inputs need to be routed to different memory locations. It is also used for data selection and decoding, when data needs to be read from a register or transmission channel.

Working Principle

The MC74VHCT138ADTRG is an integrated logic device that uses CMOS technology to switch between different input signals and enable multiple outputs. It has four independent 1-of-8 decoders/drivers with three-state outputs.The two active-low enable inputs, EN1 and EN2, control the activation of each decoder/driver. In order to activate one of the decoders/drivers, both of these inputs must be a Low or OPEN. The output state is determined by the logic state of the select inputs A0, A1, and A2. When the OE (Output Enable) is a logic High or OPEN, all outputs will be activated.The device is designed to switch between three binary variables and output one singal from one of the eight active low output drivers, O0 to O7. Each output is capable of driving either one or two standard TTL loads.The output signals of the MC74VHCT138ADTRG are isolated or isolated and amplified, depending on the applied voltage and the application. The device outputs can be used to supply logic signals to multiple devices, or can be used to control multiple loads.

Conclusion

The MC74VHCT138ADTRG is a versatile integrated signal switch logic device that is widely used in multiple applications. It is capable of routing data from a single source to multiple destinations. The device has four independent 1-of-8 decoders/drivers with three-state outputs and two active-low enable inputs, EN1 and EN2. The output state is determined by the logic state of the select inputs A0, A1, and A2. It is an effective logic device used in areas such as telecom, automotive electronics, industrial, and computer systems.

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