MC100EL31DG

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The MC100EL31DG is a flip-flop circuit belonging to the logic family of circuits. It is one of the most widely used logic circuits, being employed in a variety of applications ranging from operating system clocks to memories. As such, it is a common component in many electronic devices.

Application Field

The MC100EL31DG is primarily used for memory and sequencing applications. Memory applications are seen in computer caches and read-only memories, while the sequencing applications involve the use of the flip-flop in the design of frequency dividers, time delay circuits, and frequency counters. Additionally, the circuit can be used in digital-to-analog converters.

Additionally, the MC100EL31DG is a preferred choice for logic-level analog-to-digital converters thanks to its low noise susceptibility, fast rise and fall times, and low power dissipation. The circuit can be used in radiation-hardened circuits because of its low susceptibility to cosmic radiation-induced failure.

Working Principle

The MC100EL31DG is based on the use of two metal oxide semiconductor (MOS) transistors, an n-channel enhancement-mode transistors and a p-channel depletion-mode transistor, which act as the set-reset pair of flip-flops. The data is stored as a voltage differential across these transistors, and the data is transferred between them through a series of pulse signals. The circuit can store one bit of data, which can be either a 0 (low) or a 1 (high) state.

The circuit also makes use of an inverter, which is controlled by the input pins. The inverter is used to trigger the output logic states when a logic “1” (high) or logic “0” (low) is given to the input pins. When a logic “1” (high) is applied to the input pins, the inverter triggers the set-reset pair of transistors, which, in turn, stores the data (bit) at the output pins.

When a logic “0” (low) is applied to the input, the inverter is triggered, changing the logic state of the output pins and resetting the data bit at the output pins. This resetting of the data bit is known as the reset state, and it is the actual output "0" (low) logic state.

Therefore, the working principle of the MC100EL31DG consists of the use of an inverter which is triggered when a logic signal is applied to the input pins, which then triggers the set-reset pair of transistors, thus setting or resetting the data (bit) at the output pins.

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