DM74ALS534N

Overview

The DM74ALS534N is an octal D-type edge-triggered flip-flop manufactured by onsemi, belonging to the 74ALS logic series. It features eight independent D-type flip-flops with positive-edge triggering and three-state inverted outputs. The device operates within a supply voltage range of 4.5V to 5.5V. Key electrical parameters include a maximum propagation delay of 16ns at 5V with 50pF load, output currents of 2.6mA (high) and 24mA (low), and a static current of 19mA. It is housed in a 20-pin DIP package and supports a commercial operating temperature range of 0°C to 70°C.

Feature Summary

• Octal configuration providing eight independent D-type edge-triggered flip-flops for parallel data storage.
• Three-state outputs allow direct bus connection without external buffers, reducing system component count.
• Inverted output polarity complements standard non-inverting logic requirements in specific circuit topologies.
• ALS technology ensures high-speed operation with reduced power consumption compared to standard TTL families.

Applications

• Parallel data buffering and temporary storage in digital communication systems.
• Interface circuits between microprocessors and peripheral devices requiring tri-state isolation.
• Shift register configurations for serial-to-parallel data conversion applications.
• General-purpose memory elements in industrial control logic and instrumentation.

Procurement Notes

Verify that the replacement part number matches the original pinout and electrical specifications exactly. Confirm the new component's package dimensions align with existing PCB footprints. Check for any changes in logic polarity or output drive strength that may impact downstream circuitry. Ensure the substitute manufacturer meets required quality standards and reliability certifications for the intended application environment.

Selection Notes

Select this component when designing systems requiring high-density octal storage with minimal power draw. The ALS series offers a balance of speed and efficiency suitable for battery-operated or thermally constrained environments. Consider the three-state capability if bus sharing is necessary. Verify that the 0°C to 70°C temperature range meets operational requirements before finalizing the design.

Part Context

This device is part of the widely adopted 74ALS family, known for advanced low-power Schottky technology. It serves as a foundational building block for sequential logic in mixed-signal designs. The octal format simplifies routing for wide data buses. As a legacy component, it remains relevant for maintaining older hardware systems where form-factor compatibility is critical.

Replacement Considerations

SN74ALS534N