DM54S175W/883

Overview

The DM54S175W/883 is a quadruple D-type flip-flop with separate clocks, manufactured by National Semiconductor. It utilizes Schottky TTL (S-TTL) logic technology and is housed in a 14-pin ceramic flatpack (DFP) package. The device operates on a nominal 5 V supply voltage with a maximum supply current of 36 mA. It features open-collector outputs and supports an extended operating temperature range from -55 °C to 125 °C. The propagation delay at nominal supply is 11 ns. This component is qualified under MIL-STD-883 standards.

Feature Summary

• Quadruple D-type flip-flops with independent clock inputs for precise timing control
• Schottky TTL construction ensures high-speed switching performance
• Open-collector output configuration allows flexible interfacing and wired-logic capabilities
• Ceramic flatpack packaging provides durability for harsh environments

Applications

• Military and aerospace digital systems requiring radiation-hardened or high-reliability components
• High-speed data storage registers in industrial control applications
• Shift register configurations for serial-to-parallel data conversion
• Timing and synchronization circuits in defense electronics

Procurement Notes

Verify that the specific part number suffix /883 corresponds to MIL-STD-883 qualification requirements. Confirm the manufacturer source is authorized, as National Semiconductor assets are managed by Texas Instruments. Ensure the ceramic flatpack package integrity is intact upon receipt. Check for compliance with export control regulations due to military-grade specifications. Validate that the open-collector output characteristics match system design requirements before integration.

Selection Notes

Select this component when high-speed D-type flip-flop functionality is required in extreme temperature environments. The open-collector outputs necessitate external pull-up resistors for proper logic level generation. Consider the 14-pin ceramic flatpack form factor for board space constraints and thermal management needs. Verify compatibility with existing Schottky TTL power supplies and signal levels. Evaluate the 11 ns propagation delay against system timing budgets to ensure signal integrity.

Part Context

This component belongs to the DM54Sxx series of Schottky TTL logic devices produced by National Semiconductor. These parts are designed for high-speed digital applications where reliability is critical. The DM54S175 specifically implements quadruple D-type flip-flops, distinguishing it from NAND or NOR gate variants within the same family. The /883 suffix indicates adherence to strict military quality standards, differentiating it from commercial grade equivalents.

Replacement Considerations

Public confirmed substitute part numbers: DM54S175J, DM54S175K, DM54S175L.