74F112SJX

Flip Flops Overview

The onsemi 74F112SJX is a dual J-K negative edge-triggered flip-flop from the 74F logic series, housed in a 16-SOP surface-mount package. It contains two independent circuits with differential outputs and single-ended inputs. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum clock frequency of 105 MHz. Key electrical parameters include a propagation delay of 6.5 ns at 5V with 50pF load, high-level output current of -1 mA, and low-level output current of 20 mA. Static current (Iq) is specified at 19 mA. It functions across an operating temperature range of 0°C to +70°C.

Flip Flops Feature Summary

• Dual J-K flip-flops with negative-edge triggering for precise timing control
• Differential outputs providing complementary signal paths
• Integrated preset and reset functionality for state initialization

Flip Flops Applications

• High-speed digital data storage systems
• Frequency division and counter circuits
• Shift register implementations

Flip Flops Procurement Notes

This component is officially listed as obsolete and no longer manufactured by onsemi. Procurement must focus on verifying available stock from authorized distributors or secondary market suppliers. Buyers should confirm lot dates and authenticity rigorously due to the end-of-life status. Direct replacement sourcing is recommended to ensure long-term supply chain stability and avoid compatibility risks associated with legacy inventory.

Flip Flops Selection Notes

Engineers selecting this part must account for its discontinued status and limited availability. The 74F series offers high speed but consumes more power than modern alternatives. Designers should evaluate if the specific 6.5 ns delay and 19 mA static current meet system requirements. Given the EOL status, migrating to a direct substitute like the SN74F112NSR is advisable for new designs to ensure ongoing support and consistent performance characteristics.

Flip Flops Part Context

The 74F112SJX belongs to the 74F family of standard logic ICs, known for fast switching speeds. As a dual J-K flip-flop, it serves as a fundamental building block for sequential logic circuits. The SOP-16 package facilitates surface-mount assembly. This specific variant represents a legacy product line that has been superseded by newer technologies, reflecting the evolution of semiconductor manufacturing towards lower power and higher integration densities.

Flip Flops Replacement Considerations

The Texas Instruments SN74F112NSR is documented as a direct substitute for the 74F112SJX. Both are dual J-K negative edge-triggered flip-flops in similar packages. Verification of pinout compatibility and electrical parameter alignment is required before substitution. The TI part is currently active, offering a viable path for design continuation.