74VHC112MTCX

Overview

The Fairchild Semiconductor 74VHC112MTCX is a dual J-K flip-flop integrated circuit belonging to the 74VHC logic series. It features two independent circuits housed in a 16-TSSOP surface-mount package with a width of 4.40 mm. The device operates within a supply voltage range of 2 V to 5.5 V and supports a maximum clock frequency of 185 MHz. Key electrical parameters include a propagation delay of 10.5 ns at 5 V with 50 pF load, output currents of ±8 mA, and static current of 2 µA. It functions as a negative edge-triggered device with preset and clear capabilities, offering complementary outputs.

Feature Summary

• Dual J-K flip-flops with negative edge triggering for precise synchronous data storage
• Complementary differential outputs providing both true and inverted signal states
• Integrated preset and clear functions for direct asynchronous control of flip-flop states

Applications

• Synchronous digital counters requiring dual-bit state management
• Shift registers utilizing J-K input configurations for serial data processing
• Timing circuits employing negative edge-triggered latching mechanisms

Procurement Notes

Verify the manufacturer designation carefully, as onsemi has acquired Fairchild Semiconductor. Confirm that the specific part number matches the required TSSOP-16 package dimensions and pinout. Ensure compliance with RoHS standards if required by your assembly process. Cross-reference datasheets from both original Fairchild and current onsemi sources to confirm identical electrical specifications and pin assignments before finalizing procurement.

Selection Notes

Select this component when dual independent J-K flip-flops are required in a compact surface-mount form factor. The 74VHC series offers high-speed performance suitable for applications demanding low propagation delay. Consider the 2 V to 5.5 V operating range for compatibility with various logic families. The TSSOP-16 package provides a space-efficient solution for dense PCB layouts compared to larger through-hole alternatives.

Part Context

This component is part of the broader 74VHC family of high-speed CMOS logic devices. It shares functional similarities with other J-K flip-flops like the 74VHC112MX, which utilizes a SOIC-16 package instead of TSSOP. The 74VHC series is designed to provide performance comparable to TTL logic while maintaining low power consumption typical of CMOS technology. It serves as a fundamental building block for sequential logic circuits in digital systems.

Replacement Considerations

The 74VHC112MX is a verified substitute part number from the same manufacturer, offering identical logical functionality but packaged in a 16-SOIC format instead of TSSOP. Verify that the target PCB footprint accommodates the slight dimensional differences between the SOIC and TSSOP packages. Other compatible parts may exist from different vendors within the 74VHC series, provided they meet the same electrical and timing specifications.