SN74ALS642A-1DWRG4

Series:	74ALS
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Logic Type:	Transceiver, Inverting
Number of Elements:	1
Number of Bits per Element:	8
Input Type:	--
Output Type:	Open Collector
Current - Output High, Low:	-, 24mA
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Surface Mount
Package / Case:	20-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	20-SOIC
Base Part Number:	74ALS642

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SN74ALS642A-1DWRG4 Application Field and Working Principle

Introduction

The SN74ALS642A-1DWRG4 is a logic chip that is designed to provide higher speed, lower power, and improved overall performance. It is part of the family of Texas Instruments (TI) chips in the SN74ALS642A-1DWRG4 series and is a Logic-Buffers, Drivers, Receivers, and Transceivers. This chip is capable of providing bidirectional translation between two different voltage systems and has a wide range of applications in the production of electronic circuitry. This article will discuss the application field and the working principle of the SN74ALS642A-1DWRG4.

Applications

The SN74ALS642A-1DWRG4 is commonly used in industrial and automotive applications, including signal transmission/reception, signal processing and control, general interface and connection, optical signal processing, and automotive modules. The chip is especially well-suited for automotive applications due to its high speed, low power consumption and improved overall performance.In addition, the SN74ALS642A-1DWRG4 can be used in personal electronics like audio systems and TVs, as well as in communication systems such as LANs and WLANs. It is also suitable for applications like clock and memory generation, as it has two input ports that can be used for writing and reading signals, and two outputs for reading signals from the chip.

Working Principle

The SN74ALS642A-1DWRG4 uses logic gates and transistors to enable bi-directional communication between two different voltage systems. The logic gates are arranged in a dual-stage logic design with two differential pairs of transistors, which enable the chip to process, store, and output information.The chip follows the three-state logic design, having three possible states: high, low, and high impedance. In a high-impedance state, the chip is able to detect incoming signals, while in a low-impedance state it transmits outgoing signals. The high state is used as a reference, while the low state is used to enable input/output control.The chip also features an enable pin that controls when the inputs and outputs are activated. The enable pin has three main control signals, input enable (nINEN), output enable (nOUTEN) and input latch enable (nILEn). When the enable pin is pulled low, the corresponding inputs and output are activated.

Conclusion

The SN74ALS642A-1DWRG4 is a powerful logic chip that can be used in a variety of industries and applications. It is capable of providing bidirectional translation between two different voltage systems and is particularly well-suited for automotive applications due to its high speed, low power consumption and improved overall performance. It uses logic gates and transistors to enable bi-directional communication, with three possible states: high, low, and high impedance. The chip also has an enable pin that controls when the inputs and outputs are activated.

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