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Introduction

The 74HCT7403D-Q100 is part of the 4000 series of CMOS logic ICs and is used as a synchronous first-in-first-out (FIFO) memory. It stores information as it receives data and then passes it along when a read request is made. This type of memory is used in high speed applications such as communication and data processing.

Application Field

The 74HCT7403D-Q100 is primarily used in communications applications, where data needs to be stored and transmitted at high speeds. It is also used in applications such as machine learning, in which data needs to be collected quickly and processed. It is also applicable in various types of data processing, including audio and video.

Since the 74HCT7403D-Q100 is a CMOS logic device, it is well suited for use in portable and embedded systems, due to its low power consumption. It is also well suited for use in multi-drop applications, such as SPI, I2C and CAN, thanks to its synchronous behaviour.

Functional Principle

The 74HCT7403D-Q100 is an 8 Bits FIFO, meaning it can store up to 8-bits of data at a time. When data is written to the FIFO, it is stored in an internal register and held until a Read command is issued. Once the Read command is issued, the data is moved to the output port and made available for use by the system.

The 74HCT7403D-Q100 is designed for use with synchronous systems, and utilizes a Chip Select input to determine when data is written to the FIFO. When Chip Select is active, the data written will be stored in the Register and the Count output will increment. When Chip Select is deactivated, the Register will remain in its current state, and the Count will remain unchanged.

The 74HCT7403D-Q100 also has a Reset input which will reset all internal registers and set the Count output to zero. This ensures that the FIFO is always in a known state so that data can be written and read without any unexpected surprises.

Conclusion

The 74HCT7403D-Q100 is a versatile synchronous FIFO, capable of storing 8 bits of data at a time. It is applicable in data processing and communication applications, due to its low power usage and synchronous nature. With the addition of a Reset input and a Chip Select input, the 74HCT7403D-Q100 can be used in a variety of complex systems with confidence.

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