DM74ALS175N

Overview

The DM74ALS175N is a quad D-type flip-flop utilizing Advanced Low-Power Schottky (ALS) technology. It features four independent positive-edge-triggered flip-flops with complementary Q and /Q outputs, a direct clear input, and buffered clock inputs. Designed for TTL-compatible logic levels, the device operates within a supply voltage range of 4.5V to 5.5V. The component is housed in a standard 16-pin DIP package suitable for through-hole mounting.

Feature Summary

• Advanced Low-Power Schottky construction provides high-speed switching with reduced power consumption compared to standard LS logic families.
• Quad configuration includes four independent D-type flip-flops with both true and inverted outputs available on each stage.
• Positive-edge triggering ensures data transfer occurs specifically at the rising edge of the clock pulse.
• Direct clear input allows immediate resetting of all flip-flop outputs regardless of clock or data states.

Applications

• Buffer and storage registers in digital systems
• Shift register configurations for serial-to-parallel conversion
• Pattern generators for test equipment

Procurement Notes

Verify the manufacturer origin, as Fairchild Semiconductor was acquired by onsemi. Confirm that the specific part number corresponds to the ALS family specifications rather than the similar LS variant. Ensure the package type matches the required PCB footprint and verify compliance with current environmental standards such as RoHS before finalizing procurement.

Selection Notes

Select this component when design requirements demand faster propagation delays than standard LS logic while maintaining lower power dissipation than AS series devices. The quad architecture with complementary outputs simplifies circuit design where both signal polarities are needed. Ensure the system clock frequency remains within the specified operational limits for reliable data capture.

Part Context

This device belongs to the 74ALS logic family, which bridges the performance gap between standard Low-Power Schottky (LS) and Advanced Schottky (AS) technologies. It shares functional pinouts with other 74-series logic components, facilitating integration into existing TTL-based designs requiring moderate speed improvements without significant power increases.

Replacement Considerations

SN74ALS175N from Texas Instruments serves as a direct functional substitute. SN74LS175N offers compatibility but with slower switching speeds. SN74AS175N provides higher performance but consumes more power. Verify pinout compatibility and electrical characteristics before substituting.