DM74ALS109AMX

Overview

The DM74ALS109AMX is a D-type flip-flop belonging to the Advanced Low-power Schottky (ALS) logic family, manufactured by Fairchild Semiconductor. It features a single unit with positive-edge triggering and an asynchronous clear input. The device operates within a supply voltage range of 4.5 V to 5.5 V. It provides a low-level output current of 8 mA and a high-level output current of -400 µA. The propagation delay is specified at 11 ns. The component is housed in a 14-lead Small Outline Integrated Circuit (SOIC) package, specifically MS-012, suitable for surface-mount applications across a commercial temperature range of 0°C to +70°C.

Feature Summary

• Positive-edge triggered D-type flip-flop configuration
• Asynchronous clear functionality for immediate state reset
• Advanced Low-power Schottky technology for improved speed and power efficiency

Applications

• Digital data storage circuits
• Shift register implementations
• Timing and control logic systems

Procurement Notes

Verify the specific ordering suffix against official Fairchild or onsemi documentation to confirm package type and lead-free status. Confirm that the requested part matches the exact ALS series specifications required for your design. Check current availability status as legacy components may have limited supply chains. Ensure compatibility with existing board layouts for the SOIC-14 footprint.

Selection Notes

Select this component when a compact, surface-mount D-flip-flop with asynchronous clear is required. The ALS series offers a balance between power consumption and switching speed compared to standard LS logic. Consider the 14-pin SOIC package constraints and verify that the 4.5V to 5.5V operating range aligns with the system's power supply rails. Evaluate thermal requirements for the commercial temperature grade.

Part Context

This device is part of the extensive 74ALS logic family, known for its advanced oxide-isolation process. It serves as a fundamental sequential logic element within digital integrated circuit designs. The DM74ALS109AMX variant specifically denotes the surface-mount SOIC package version produced by Fairchild Semiconductor, now often associated with onsemi distribution channels following corporate restructuring.

Replacement Considerations

Compatible substitutes include the DM74ALS109AN (DIP package) or equivalent parts from other manufacturers such as SN74ALS109N. Verify pinout compatibility and electrical parameters before substitution.