MC74HC109N

Flip Flops Overview

The MC74HC109N is a dual positive-edge-triggered D-type flip-flop with preset and clear inputs, manufactured by onsemi. It utilizes advanced silicon-gate CMOS technology to achieve operating speeds comparable to equivalent LS-TTL parts while maintaining low power consumption. The device features independent data, preset, clear, and clock inputs, along with Q and Q-bar outputs. All inputs are protected from static discharge damage via internal diode clamps to VCC and ground. It operates within a supply voltage range of 2V to 6V and is available in a 16-pin DIP package.

Flip Flops Feature Summary

• Dual D-type flip-flops with independent preset and clear functions
• Positive-edge triggering for data transfer during clock pulse transitions
• High noise immunity and low power consumption typical of standard CMOS
• Internal input protection against static discharge damage

Flip Flops Applications

• Data storage and register applications
• Shift registers and counters
• Timing control circuits
• Digital signal processing systems

Flip Flops Procurement Notes

Verify the specific suffix 'N' corresponds to the through-hole DIP-16 package variant when sourcing. Confirm RoHS compliance status as per the manufacturer's current documentation. Ensure the ordering part number matches the exact logic family requirements for your design. Cross-reference the datasheet revision date to confirm pinout and electrical characteristics remain consistent with your schematic.

Flip Flops Selection Notes

Select this component when dual D-type flip-flops with asynchronous preset and clear are required in a through-hole DIP package. It serves as a direct pin-compatible replacement for similar 74HC series devices in legacy designs. Consider the propagation delay and supply voltage range relative to system timing constraints. Verify that the input drive levels are compatible with the preceding logic family to ensure reliable operation.

Flip Flops Part Context

This part belongs to the 74HC (High-speed CMOS) logic family, which offers performance similar to LS-TTL but with lower power consumption. The 'MC' prefix typically denotes Motorola/onsemi manufacturing origin. As a standard logic component, it is widely used in general-purpose digital electronics. The N suffix specifically indicates the plastic dual-in-line package style suitable for breadboarding or PCB mounting.

Flip Flops Replacement Considerations

Compatible substitutes include other manufacturers' 74HC109 variants in DIP-16 packages. Ensure any replacement maintains the same logic family characteristics and pinout compatibility. Verify that alternative sources offer the same voltage range and input protection features. Check for any differences in propagation delay specifications if timing-critical applications are involved.