DM74ALS574ASJX

Overview

The DM74ALS574ASJX is an octal D-type edge-triggered flip-flop manufactured by onsemi, belonging to the Advanced Low-power Schottky (ALS) logic series. It features a single element with eight bits per element, housed in a 20-SOP surface-mount package. The device operates within a supply voltage range of 4.5V to 5.5V and supports a maximum clock frequency of 35 MHz. Key electrical parameters include a propagation delay of 14ns at 5V with 50pF load, output currents of -2.6mA (high) and 24mA (low), and a static current of 18mA. It functions as a positive-edge triggered unit with non-inverting outputs.

Feature Summary

• Octal configuration providing eight independent D-type storage elements within a single integrated circuit.
• Positive-edge triggering mechanism ensures data capture occurs specifically on the rising clock transition.
• Non-inverting output polarity maintains logical consistency between input data states and output signals.
• Advanced Low-power Schottky technology delivers high-speed performance while managing power consumption.

Applications

• Parallel data storage and buffering in digital logic circuits
• Shift register construction for serial-to-parallel data conversion
• Memory interface modules requiring edge-triggered state retention

Procurement Notes

Verify component authenticity through authorized distributors due to discontinued status. Confirm package integrity and pin alignment against the 20-SOP specification. Review datasheet revisions for any historical process changes. Ensure compatibility with existing board layouts before integration. Validate supply chain sources to avoid counterfeit components.

Selection Notes

Select this component when octal parallel storage with precise edge triggering is required. Consider the ALS series characteristics for balanced speed and power needs. Evaluate the 20-SOP footprint against available PCB space constraints. Compare propagation delays against system timing requirements. Assess thermal management capabilities within the operating temperature range.

Part Context

This part belongs to the widely adopted 74ALS logic family, known for improved performance over standard TTL. The DM prefix indicates manufacturing by onsemi or its predecessor Fairchild Semiconductor. As a specialized flip-flop, it serves fundamental roles in sequential logic design across various electronic systems.

Replacement Considerations

Direct substitute options include SN74ALS574BDWR and SN74ALS574BNSR from Texas Instruments. These alternatives offer functional equivalence within the same logic family specifications.