M74HC109M1R

Flip Flops Overview

The M74HC109M1R is a dual J-K flip-flop with preset and clear, manufactured by STMicroelectronics using silicon gate CMOS technology. It operates within a supply voltage range of 2V to 6V and supports a maximum operating frequency up to 55MHz at 4.5V. The device features symmetrical output impedance with minimum currents of 4mA for both high and low states. Propagation delay is typically 20ns at VCC = 6V, with a maximum static current of 4µA at 25°C. It is housed in an SO-16 surface-mount package.

Flip Flops Feature Summary

• Dual J-K flip-flops with independent preset and clear inputs
• High-speed CMOS construction for low power dissipation
• Symmetrical output drive capability across voltage ranges
• ESD protection circuits integrated on all input pins

Flip Flops Applications

• Digital state storage and memory elements
• Frequency division and counting circuits
• Shift register configurations
• Timing sequence control logic

Flip Flops Procurement Notes

Verify the specific suffix 'M1R' against the official STMicroelectronics datasheet to confirm the SO-16 surface mount packaging and reel quantity specifications. Ensure that the ordering documentation explicitly matches the part number to avoid confusion with through-hole or non-reel variants. Cross-reference the manufacturer's latest product change notifications to confirm current manufacturing status and availability constraints before finalizing procurement orders.

Flip Flops Selection Notes

Select this component when a dual J-K flip-flop with synchronous preset and asynchronous clear functions is required in a compact surface-mount form factor. The wide 2V to 6V operating range makes it suitable for various digital logic families. Consider the typical 20ns propagation delay and 4mA output drive strength for timing and load requirements. Verify compatibility with the target system's ESD sensitivity and noise immunity standards.

Flip Flops Part Context

This part belongs to the M74HC109 series of high-speed CMOS logic devices. It is functionally compatible with standard 74HC series equivalents from other manufacturers. The device is designed for general-purpose digital applications requiring reliable state retention and sequential logic control within standard industrial temperature ranges.

Flip Flops Replacement Considerations

Direct substitutes include M74HC109B1R and M74HC109RM13TR from STMicroelectronics. Equivalent parts from other vendors may include SN74HC109 or CD74HC109, provided pinout and electrical characteristics are verified.

Flip Flops FAQ

What is the maximum operating frequency for the M74HC109M1R?

The maximum operating frequency varies between 20MHz and 55MHz depending on the specific product type within the HC/HCT series, measured at 4.5V and 25°C.

Does the M74HC109M1R have built-in ESD protection?

Yes, all inputs are equipped with protection circuits to guard against static discharge and transient excess voltage.