CD74HC112E

Overview

The CD74HC112E is a dual J-K negative-edge triggered flip-flop from the Texas Instruments AC logic family. It features differential outputs and accepts CMOS or LVTTL inputs. The device operates within a supply voltage range of 1.5 V to 5.5 V, with a maximum propagation delay of 129 ns. Output drive capability is specified at -24 mA for high level and 24 mA for low level. It is housed in a 16-pin PDIP package designed for through-hole mounting and supports an operating temperature range from -55 °C to +125 °C.

Feature Summary

• Dual J-K negative-edge triggered flip-flops with asynchronous preset and clear functions
• Differential output configuration providing complementary signal states
• Wide power supply operation supporting voltages from 1.5 V to 5.5 V
• Compatible input levels accommodating both CMOS and LVTTL logic standards

Applications

• Digital data storage and register circuits
• Frequency division and counter applications
• Shift register construction
• State machine implementation in digital systems

Procurement Notes

Verify that the specific part number suffix matches the required package type and temperature rating. Confirm RoHS compliance status as indicated in official documentation. Ensure the ordering quantity aligns with standard tube packaging specifications provided by the manufacturer. Cross-reference the datasheet revision date to confirm current electrical characteristics and pinout definitions before finalizing procurement.

Selection Notes

Select this component when dual independent J-K flip-flops are required with wide voltage tolerance. The negative-edge triggering characteristic suits designs relying on falling clock transitions. Differential outputs simplify interface requirements for certain receiver types. Verify that the 129 ns propagation delay meets system timing constraints and that the through-hole PDIP package fits the target PCB layout.

Part Context

This device belongs to the CD74AC112 series, representing a variant within the broader 74AC logic family. It provides dual flip-flop functionality in a single integrated circuit. The AC series offers performance characteristics distinct from HC or LS counterparts, specifically regarding voltage ranges and drive capabilities. This specific model utilizes a plastic dual in-line package suitable for prototyping and general-purpose circuit board assembly.

Replacement Considerations

CD74HC112N

FAQ

What is the trigger edge for the CD74HC112E?

The device is a negative-edge triggered flip-flop, meaning state changes occur on the falling transition of the clock signal.

Does the CD74HC112E include control inputs?

Yes, each flip-flop includes asynchronous preset and clear inputs to force specific output states independently of the clock.

What is the output configuration of this component?

The CD74HC112E provides differential outputs, offering both true and complement signals for each flip-flop stage.