SN74F109N

Flip Flops Overview

The SN74F109N is a dual positive-edge-triggered J-K flip-flop from the Texas Instruments SN74F logic series. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL-compatible inputs and outputs. The device provides both inverting (Q) and non-inverting (Q-bar) outputs for each flip-flop. It includes independent preset and clear inputs that are also positive-edge triggered. The component exhibits a propagation delay of 8 ns and supports low-level output currents up to 20 mA. It is housed in a 16-pin PDIP package and functions reliably across an operating temperature range of 0°C to +70°C.

Flip Flops Feature Summary

• Dual positive-edge-triggered J-K flip-flops with independent preset and clear controls
• TTL-compatible input and output characteristics for standard logic interfacing
• Simultaneous inverting and non-inverting outputs available per flip-flop

Flip Flops Applications

• Parallel data storage and transfer registers
• Binary counter circuits
• Frequency division stages

Flip Flops Procurement Notes

Verify the specific suffix against official documentation, as variations may indicate different packaging or environmental ratings. Confirm the package type matches the design requirements, as the 'N' suffix typically denotes a through-hole PDIP configuration. Ensure compatibility with existing board layouts before finalizing procurement decisions.

Flip Flops Selection Notes

Select this component when high-speed switching is required within standard 5V logic systems. The SN74F series offers faster performance compared to standard 74LS counterparts. Consider the through-hole mounting style if prototyping or specific mechanical constraints necessitate it over surface-mount alternatives.

Flip Flops Part Context

This part belongs to the SN74F family, known for high-speed operation using advanced Schottky technology. It serves as a direct functional replacement for other J-K flip-flops in the 7400 series ecosystem, maintaining pinout compatibility while offering improved speed metrics suitable for demanding digital timing applications.

Flip Flops Replacement Considerations

SN74F109DR is a surface-mount equivalent in SOIC-16 packaging. SN74ALS109AN offers similar functionality with lower power consumption but slightly slower speeds in a PDIP-16 package.