SN74ACT7814-40DLR Integrated Circuits (ICs)

Bus Directional:	Uni-Directional
Base Part Number:	74ACT7814
Supplier Device Package:	56-SSOP
Package / Case:	56-BSSOP (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
FWFT Support:	No
Retransmit Capability:	No
Programmable Flags Support:	Yes
Expansion Type:	Width
Series:	74ACT
Current - Supply (Max):	400µA
Voltage - Supply:	4.5V ~ 5.5V
Access Time:	20ns
Data Rate:	25MHz
Function:	Asynchronous
Memory Size:	1.125K (64 x 18)
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Logic - FIFOs Memory: SN74ACT7814-40DLR Application Field and Working Principle

Many logic-based applications require high-speed interfaces to reduce latency and maintain high data throughput. The issue is that logic-based applications are often combined with RAM or other volatile memory, which can create bottlenecks and slow down the system since reading and writing from memory requires longer access times. This is where FIFO (First In First Out) memory, such as the SN74ACT7814-40DLR, comes into play. In this article, we’ll discuss the SN74ACT7814-40DLR’s application field, working principle, and other features.

Application Field

The SN74ACT7814-40DLR is a logic-based FIFO memory device designed specifically for high-speed use cases. It is intended to be used as a dedicated interface between logic-based applications and higher data throughput memories such as RAM. This FIFO provides the equivalent of an 8K x 16-bit memory at speeds up to 1Gbps. It supports asynchronous read and write operations, allowing the device to work independently of the main system clock. Its low latency and high speed make it ideal for several areas of data processing.The SN74ACT7814-40DLR is mainly used in communications and networking applications, such as high-speed Ethernet switches and routers. It is also used for high-speed data acquisition in areas such as medical imaging, audio processing and outside broadcasting. In addition, it can be used as a data buffer in high-speed memory link and memory interface applications.

Working Principle

The SN74ACT7814-40DLR functions as a dedicated non-volatile memory device with a consistent, high bandwidth. It operates on an asynchronous FIFO principle, meaning that each read or write cycle takes a fixed amount of time. Data written to the device is stored in an 8K x 16-bit memory area and is available for reading at any time. This allows the device to store data independently of the main system clock, ensuring that data throughput is always consistent and that latency is kept to a minimum. In a typical operation, the SN74ACT7814-40DLR receives data from one system such as an Ethernet controller and stores it in its memory. It then forwards the data to another system, such as a RAM. The device can also function in reverse, receiving data from a RAM and sending it to the Ethernet controller. In both cases, the device acts as an intermediary between the two systems, providing a high-speed, low-latency data connection between the two.

Other Features

The SN74ACT7814-40DLR is also designed for easy integration with logic-based systems. The FIFO uses a standard 21-pin MSA connector, allowing it to integrate seamlessly with IP cores and external logic-based systems. In addition, the FIFO supports functions such as bidirectional data transfer and flow control, simplifying integration with external interfaces. The device also features a number of design features such as programmable thresholds, internal protection circuitry, and hot plugging.Overall, the SN74ACT7814-40DLR is a high-speed FIFO module designed for use in logic-based systems. Its asynchronous FIFO design ensures that data throughput is consistent and that latency is minimized. The device is ideal for applications such as high-speed networking, memory link control, and data buffering, and is designed for easy integration with logic-based systems.

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