74HC243DB,118

Introduction

Logic - Buffers, Drivers, Receivers, Transceivers are an integral part of any electronic system. They are Interface between devices that operate at different levels of voltage or electrical characteristics.In this article we will be looking at 74HC243DB,118 application field and working principle.

What is 74HC243DB,118?

74HC243DB,118 is a logic device that uses a dual buffer with separate enable/disable input and inverted outputs. It is made from a Schottky type of switch in order to reduce power dissipation. The device is designed for low voltage operations, with a wide operating range of 1.65V to 5.5V.

Application Fields of 74HC243DB,118

The 74HC243DB,118 is used in many applications in electronics, because of its low power operation, wide operating range and inverted output. The most common applications of the 74HC243DB,118 include:

• Serial Interfaces: The device has two separate buffing channels, enabling serial communication between two devices at different electrical and voltage levels.
• Low Power Battery: The device can be used in conjunction with a battery-powered microcontroller to provide a low voltage power source for complex tasks.
• Logic Gates: This device is commonly used as a logic gate to combine signals and for direct control of output elements like LEDs.
• Digital Signal Processing (DSP): The device can be used in DSP operations for signal conditioning and for audio amplification.

Working Principle of 74HC243DB,118

74HC243DB,118 operates with a concept of two independent dual buffered channels with separate enable/disable input. The device enables each channel to process two different input voltages, one negative and one positive. The positive input is common to both channels and the negative input is the inverse of the positive input. The device then drives two separate outputs by using different enable/disable inputs. The output can be set as either inverted or non-inverted.

The input voltage is determined by the voltage of the previous device in the input chain and the output voltage is limited to the supply voltage of the device. The device is designed to reduce power dissipation and hence operates with a heat dissipation of 40mW.

Conclusion

74HC243DB,118 is low power logic device that is used in a variety of applications, including serial interfaces, low power battery, logic gate and digital signal processing. This device works on two buffered channels with separate enable/disable inputs and drives two different outputs. It is designed to reduce power dissipation and has a wide operating range.