SN74ALS109ADG4

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The SN74ALS109ADG4 is a classic model of flip flip logic. It is often used in application fields where obtaining reliable, secure data is paramount. It consists of two individual bistable latches that enable secure asynchronous data transfers. Additionally, the device is built with a dual input enable pin that allows for both positive and negative logic control.

The two latches are each designed with a separate data input and output. The data inputs present the data to the device and the outputs display the data once it has been processed. Each latch additionally has an active high and active low enable inputs that allow for secure and reliable asynchronous data storage. The active low enable is used to turn the latch on, while the active high enable is used to turn it off.

The SN74ALS109ADG4 logic flip flop can be used to store binary information in an asynchronous manner. It is mainly used in applications where it is essential to store time-critical data securely, such as in computer processors. It is also used in several other applications such as counters, registers, storage modules, and encoders.

The working principle behind the SN74ALS109ADG4 is based on the flip flop concept. A flip flop is a circuit that stores data in a bistable circuit. The circuit is generally made of two NAND, NOR or XOR gates that are connected in a loop and are used to store data. A flip flop structure can either be edge-triggered, in which the data is transferred to the output when the clock signal changes, or level triggered, in which the data is transferred when the clock signal is high. The SN74ALS109ADG4 is an active-low level triggered device.

When the active low enable and clock inputs are both high, the device enters its latch mode, where the current input is locked in and stored in the output. In this configuration, the data is transferred and stored until the active low enable goes low, at which point the device exits latch mode and the data is reset. The SN74ALS109ADG4 also has a data reset pin that allows the user to manually reset the data.

In summary, the SN74ALS109ADG4 is a reliable and secure device that is used to store binary data in an asynchronous manner. It consists of two independent latches that each have separate data inputs and outputs, and an active low enable that allows for secure data storage. Additionally, the device has a data reset pin that enables the user to manually reset the data. Due to its high level of security and reliability, the SN74ALS109ADG4 is often used in computer processors, counters, registers, storage modules, and encoders.

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