74HC112P-E

Overview

The Renesas 74HC112P-E is a dual negative-edge triggered JK flip-flop housed in a 16-pin DIP package. It operates within a supply voltage range of 2.0V to 6.0V and supports clock frequencies up to 24MHz. The device features asynchronous active-low set and reset inputs, complementary outputs, and Schmitt-trigger action on the clock input for noise tolerance. It includes input clamp diodes and meets JEDEC standards with specified operating temperatures from -40°C to +85°C.

Feature Summary

• Dual negative-edge triggered JK flip-flops with individual J and K inputs
• Asynchronous active-low set and reset functions independent of the clock
• Schmitt-trigger clock input provides high tolerance to slow rise and fall times
• Input clamp diodes enable interface to voltages exceeding VCC using current limiting resistors

Applications

• Digital state storage and memory elements
• Frequency division circuits
• Shift register construction
• Synchronous logic control systems

Procurement Notes

Verify the specific manufacturer designation, as Renesas acquired Hitachi Semiconductor. Confirm the datasheet aligns with the HC series specifications rather than legacy variants. Ensure the order matches the exact suffix 'P-E' for the PDIP-16 package and temperature range. Cross-reference with official Renesas or Hitachi archives to validate component authenticity and revision history before procurement.

Selection Notes

Select this component when dual JK functionality with asynchronous control is required in through-hole designs. The Schmitt-trigger clock input makes it suitable for noisy environments or signals with slow transitions. Verify that the 2V to 6V operating range covers the system's power requirements and that the DIP-16 package fits the PCB layout constraints compared to surface-mount alternatives.

Part Context

This part belongs to the 74HC (High-speed CMOS) logic family, originally developed by Hitachi and now managed by Renesas Electronics following corporate acquisitions. The 'P-E' suffix indicates a plastic DIP-16 package compliant with environmental standards. It serves as a fundamental building block for sequential logic circuits within broader digital system architectures.

Replacement Considerations

Nexperia 74HC112PW

FAQ

How does the clock input handle slow signal transitions?

The clock input incorporates Schmitt-trigger action, which ensures clean switching and high tolerance to slow rise and fall times.

What is the function of the set and reset inputs?

They are asynchronous active-low inputs that force the flip-flop into a defined state independently of the clock signal.