SN74LS173AN

Flip Flops Overview

The SN74LS173AN is a quad D-type flip-flop with three-state outputs manufactured by Texas Instruments. It belongs to the standard 74LS series of logic devices, utilizing low-power Schottky TTL technology for improved speed and power consumption characteristics compared to earlier variants. The component features separate clock inputs for each flip-flop and includes clear and preset functions. It is housed in a 16-pin dual in-line package (DIP), designated by the 'N' suffix, suitable for through-hole mounting on printed circuit boards.

Flip Flops Feature Summary

• Quad configuration providing four independent D-type storage elements within a single integrated circuit
• Three-state output capability allowing direct bus connection and system-wide data sharing
• Low-power Schottky construction ensuring reduced power dissipation while maintaining high switching speeds

Flip Flops Applications

• Register applications requiring parallel data storage and retrieval
• Shift register configurations for serial-to-parallel or parallel-to-serial data conversion
• Timing control circuits involving pulse generation and synchronization

Flip Flops Procurement Notes

Verify the manufacturer marking and date code on the physical component to confirm authenticity. Ensure the package type matches the required PCB footprint, specifically the 16-pin DIP format. Check for any specific ordering suffixes that may indicate temperature range variations or tape-and-reel packaging options distinct from the standard tube supply.

Flip Flops Selection Notes

Select this component when designing systems requiring multiple synchronized data latches with tri-state output isolation. Consider the voltage levels compatible with the 5V logic family and ensure the propagation delay specifications meet the timing requirements of the target application circuit.

Flip Flops Part Context

This device is part of the broader 7400 series logic family, widely used in digital electronics for basic memory and logic operations. The LS variant represents a significant evolution in performance over standard TTL, offering a balance between speed and power efficiency that made it a staple in mid-era computing and industrial control hardware.

Flip Flops Replacement Considerations

Direct pin-compatible substitutes include the SN74S173 for higher speed requirements or the SN74HC173 for CMOS compatibility. Verify voltage tolerance and output drive strength when substituting with different logic families to ensure signal integrity.