Description
The 74LS109 is a dual J-K positive edge-triggered flip-flop with clear and preset capabilities. It features two independent J-K flip-flops, each with set (preset) and reset (clear) inputs. The device operates on positive edge-triggering, meaning the output state changes on the rising edge of the clock input. It is part of the 74LS (Low Power Schottky) logic family, offering low power consumption and fast switching speeds. This IC is commonly used in counters, shift registers, and memory circuits.
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