DM74173N

Overview

The DM74173N is a quad D-type flip-flop integrated circuit manufactured by National Semiconductor. It features tri-state outputs and operates within a supply voltage range of 4.75V to 5.25V. The device has a quiescent current of 72 mA and supports through-hole mounting in a 16-pin DIP package. It functions reliably across an operating temperature range of 0°C to 70°C (TA). This component is designed for digital logic applications requiring four-bit storage with output control capabilities.

Feature Summary

• Quad D-type flip-flop configuration providing four independent storage elements
• Tri-state output capability allowing bus-oriented system design
• Non-inverted data output for direct logic interfacing

Applications

• Digital circuitry register storage
• Logic application data latching
• Bus interface systems requiring tri-state control

Procurement Notes

Verify the manufacturer origin, as National Semiconductor assets are now part of Texas Instruments. Confirm the specific ordering suffix matches the required package type and temperature grade. Ensure the component meets the specified 16-DIP through-hole mounting requirements. Check for any lead-free or tin/lead terminal finish variations depending on regional compliance needs. Validate the active status of the part number before finalizing procurement orders.

Selection Notes

Select this component when a quad D-type register with tri-state outputs is required for TTL-compatible logic families. Consider the 16-DIP package constraint for through-hole assembly processes. Evaluate the 72 mA quiescent current against power budget limitations. Ensure the operating temperature range of 0°C to 70°C aligns with the environmental conditions of the target application.

Part Context

The DM74173N belongs to the standard 74-series logic family, specifically designed for digital storage applications. It serves as a fundamental building block for sequential logic circuits. The device provides reliable data retention and transfer capabilities within standard TTL voltage levels. Its widespread adoption stems from its compatibility with existing logic infrastructure and straightforward integration into larger digital systems.

Replacement Considerations

Direct substitutes include other manufacturers' equivalents such as SN74LS173N or similar quad D-type flip-flops with tri-state outputs. Verify pin compatibility and electrical specifications before substitution. Cross-reference datasheets to ensure matching voltage ranges and output characteristics.