SN74HC112DR

Flip Flops Overview

The SN74HC112DR is a dual J-K flip-flop from the Texas Instruments 74HC series, housed in an 8-pin SOIC package. It operates on a supply voltage range of 2V to 6V and supports clock frequencies up to 60MHz. The device features negative-edge triggering with independent preset (/PRE) and clear (/CLR) inputs that function asynchronously. It provides complementary outputs (Q and /Q) and is designed for through-hole or surface-mount applications within a temperature range of -40°C to +85°C.

Flip Flops Feature Summary

• Dual independent J-K flip-flops with negative-edge triggering
• Asynchronous preset and clear inputs for immediate state control
• Wide operating voltage range supporting 2V to 6V logic levels
• CMOS output structure compatible with LSTTL loads

Flip Flops Applications

• Shift registers
• Frequency dividers
• Counters
• Storage registers

Flip Flops Procurement Notes

Verify the 'DR' suffix confirms the SOIC-8 package variant rather than the PDIP-16 version. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure the ordering part number matches the specific tape-and-reel quantity requirements for your assembly line. Cross-reference the datasheet revision date to ensure compatibility with current design specifications.

Flip Flops Selection Notes

Select this component when a compact surface-mount solution for dual J-K functionality is required. The HC series offers lower power consumption compared to older LS variants while maintaining similar speed characteristics. Verify that the 60MHz maximum clock frequency meets the system timing requirements. Consider the 2V minimum supply voltage if designing for low-power battery-operated applications.

Flip Flops Part Context

This component belongs to the standard 74HC family of high-speed CMOS logic devices. It serves as a fundamental building block for sequential logic circuits requiring bistable memory elements. The device integrates two complete J-K flip-flops into a single integrated circuit, reducing board space compared to discrete solutions.

Flip Flops Replacement Considerations

SN74HC112N (PDIP-16 package)

Flip Flops FAQ

How do the preset and clear inputs behave?

The /PRE and /CLR inputs are asynchronous and active-low. Asserting either input immediately sets or resets the output regardless of the clock or J/K input states.

What is the trigger mechanism for this flip-flop?

The SN74HC112DR uses negative-edge triggering, meaning the J and K input data is transferred to the output on the falling edge of the clock pulse.