83905AMLF Datasheet/PDFThere are many different types of clock and timing solutions for system designers. Many applications require high frequency clocks and buffering, and 83905AMLF is one such solution that provides clocking solutions for FPGAs, ASICs, and microcontrollers. The 83905AMLF is a Clock Buffer, Driver, and Fanout Buffers device that offers a low-latency fanout capability for clock distribution. This article will discuss the application field and working principle of 83905AMLF.
Application Field
The 83905AMLF is a fanout buffer with three 4-channel buffer/drivers that are found in standard 5V and 3.3V parts. It is designed specifically for use with FPGAs, ASICs, and microcontrollers, and is compatible with many microprocessors. The 83905AMLF also features three levels of drive disable functions, which allow the user to adjust output’s power down and up without having to cycle power. The 83905AMLF is a low-latency fanout buffer which can replace multiple packages in the system. Additionally, the 83905AMLF has the capability to be used on a board or as a stand-alone buffer, which makes it easier for system design in both environments.
Working Principle
The 83905AMLF converts a single input clock into three separate inputs and then replicates each signal four times for a total of twelve outputs. The system then distributes these twelve signals to the various FPGAs, ASICs, and microcontrollers that need the signal. The 83905AMLF uses a clock signal input at the Clock Input Buffer and then outputs the required number of 4-bit signals via the respective 4-bit outputs at the output buffers. Each signal is replicated four times, creating the four output clocks of the same signal. Internal pull-up and pull-down resistors are included to provide the necessary signal switching functions.
The 83905AMLF’s clock driver is designed to provide low-latency fanning capability to buffer and drive multiple clock domains across FPGAs, ASICs, and microcontrollers. The driver circuitry gives the user the ability to adjust the level of drive intensity for either high or low-power applications. Additionally, the driver has the ability to work in both a linear and auto-scaling configuration. It can be used to drive both synchronous and asynchronous clocks.
The 83905AMLF has a power-down function which allows the user to power down the device or adjust its power levels to reduce system power consumption. Even when powered down, the internal circuitry of the device can be used to detect the rising and falling edges of the clock. Finally, the 83905AMLF features a tri-state output feature that allows the user to instantly cut-off the output when not in use, thus cutting power loss and overall system noise.
Conclusion
The 83905AMLF is a Clock Buffer, Driver, and Fanout Buffer that can be used to provide clocking solutions in applications that require high frequency clocks and buffering. It is designed specifically for use with FPGAs, ASICs, and microcontrollers and can be used in both linear and auto-scaling configurations. The 83905AMLF utilizes a power-down feature and an internal tri-state output feature to reduce system noise and power loss when not in use. The 83905AMLF is a low-latency fanout buffer device that simplifies clock distribution across multiple FPGs, ASICs, and microcontrollers.