CD74AC112M

Overview

The CD74AC112M is a dual JK-type negative-edge triggered flip-flop manufactured by Texas Instruments. It belongs to the AC logic series and features differential outputs with inverting and non-inverting polarities. The device operates within a supply voltage range of 1.5 V to 5.5 V and supports CMOS and LVTTL input types. Packaged in a 16-pin PDIP format for through-hole mounting, it provides two independent circuits. Key electrical parameters include a propagation delay of 129 ns, high-level output current of -24 mA, and low-level output current of 24 mA. It functions reliably across an extended temperature range from -55°C to +125°C.

Feature Summary

• Dual JK-type negative-edge triggered flip-flops with preset and reset functionality
• Differential outputs providing both inverting and non-inverting signal paths
• Wide operating voltage range supporting 1.5 V to 5.5 V applications
• Robust thermal performance suitable for extreme industrial environments

Applications

• High-speed digital data storage and transfer systems
• Frequency division and counting circuits
• Shift register implementations requiring wide temperature tolerance
• Industrial control logic interfacing with mixed voltage levels

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm package type and temperature grade. Ensure the ordering part number matches the required PDIP-16 configuration. Cross-reference datasheet revisions to confirm pinout compatibility and electrical characteristics before finalizing procurement orders.

Selection Notes

Select this component when dual independent JK flip-flops are required for negative-edge triggering applications. The AC series offers a balance of speed and power consumption suitable for general-purpose logic. Verify that the 129 ns propagation delay meets system timing requirements and that the 1.5 V minimum supply voltage aligns with the design's power budget.

Part Context

This device is part of the CD74AC112 family, which includes variants like the CD74AC112E and CD74AC112M96. These components share identical logical functionality but differ in packaging and manufacturing specifications. The AC series represents a silicon gate CMOS technology optimized for high-speed operation while maintaining low power dissipation compared to earlier logic families.

Replacement Considerations

Check for SN74AC112 or CD74HC112 equivalents if PDIP-16 packages are unavailable. Verify that substitute parts maintain the same negative-edge trigger characteristic and differential output configuration to ensure circuit compatibility.