74LS109 DIP Dual J-Not-K Positive Edge Triggered Flip-Flop with Clear and Preset IC (16-Pin TTL Logic IC)

The 74LS109 DIP Dual J-Not-K Positive Edge Triggered Flip-Flop with Clear and Preset IC is a high-speed TTL sequential logic integrated circuit containing two independent J-Not-K flip-flops in a 16-pin Dual Inline Package (DIP). Built using Low Power Schottky (LS) TTL technology, it provides high-speed operation, low power consumption, and reliable sequential logic performance.

Each flip-flop is positive edge triggered, transferring input data on the rising edge of the clock signal. The device includes independent asynchronous active-low preset and clear inputs, allowing the outputs to be set or reset regardless of the clock or logic inputs. The J-Not-K configuration also enables the IC to function as a D-type flip-flop when the inputs are appropriately connected, making it suitable for registers, counters, timing circuits, embedded systems, and industrial automation.

Key Features -

• Dual independent J-Not-K flip-flops

• Positive edge triggered clock operation

• Asynchronous active-low preset inputs

• Asynchronous active-low clear inputs

• Can be configured as a D-type flip-flop

• Low Power Schottky (LS) technology

• High-speed switching performance

• 16-pin DIP package

• TTL compatible logic levels

• Suitable for sequential logic and timing applications

Specifications -

• Product type - TTL Sequential Logic IC

• IC model - 74LS109

• Logic function - Dual J-Not-K Positive Edge Triggered Flip-Flop

• Logic family - 74LS TTL

• Package type - DIP-16

• Supply voltage - 4.75V to 5.25V DC

• Trigger type - Positive Edge Triggered

• Preset type - Asynchronous Active-Low Preset

• Clear type - Asynchronous Active-Low Clear

• Propagation delay - 15ns (Typical)

• Maximum clock frequency - 25MHz

• High-level output current - -0.4mA

• Low-level output current - 8mA

• Mounting type - Through Hole (THT)

• Operating temperature - 0C to 70C

Applications -

• Binary counters

• Shift registers

• Data storage circuits

• Digital state machines

• Frequency divider circuits

• Embedded systems

• Industrial automation systems

• Timing and sequencing circuits

• Prototype PCB development

• DIY electronics projects