SN74LS173ANSRG4

Flip Flops Overview

The SN74LS173ANSRG4 is a Texas Instruments logic component belonging to the 74LS series. It functions as a 4-bit D-type register featuring three-state outputs. The device utilizes positive edge triggering for data capture and includes a master reset function. It operates within a supply voltage range of 4.75 V to 5.25 V. The maximum propagation delay is specified at 30 ns under standard test conditions. The unit supports a maximum clock frequency of 25 MHz. It is housed in a 16-pin SOIC package designed for surface mount installation.

Flip Flops Feature Summary

• Contains four independent D-type flip-flops with positive edge-triggered operation
• Provides three-state outputs controlled by separate output enable inputs
• Includes a dedicated master reset input for synchronous clearing of all stages

Flip Flops Applications

• Data storage and buffering in digital logic circuits
• Shift register configurations for serial-to-parallel conversion
• Address latching in microprocessor-based systems

Flip Flops Procurement Notes

Verify the specific suffix 'SRG4' against the manufacturer's current documentation to confirm active status and lead times. Confirm RoHS compliance requirements match project specifications. Ensure the SOIC-16 footprint matches the target PCB design. Check for obsolescence notices or lifecycle changes before finalizing procurement plans.

Flip Flops Selection Notes

Select this component when a low-power Schottky (LS) technology level is required for 4-bit storage with tri-state capability. Consider the 30 ns propagation delay and 25 MHz maximum frequency limits against system timing requirements. Evaluate the SOIC package size constraints relative to available board space compared to through-hole alternatives.

Flip Flops Part Context

This part belongs to the widely used 74LS family of TTL logic devices, known for balanced speed and power consumption. The SN74LS173A variant specifically provides registered storage with bus-compatible outputs. The 'SRG4' designation indicates a tape-and-reel packaging format compliant with RoHS standards, intended for automated surface-mount assembly processes.

Flip Flops Replacement Considerations

The SN74LS173AN serves as a direct pin-compatible alternative in a PDIP package. For surface-mount needs without the reel format, the SN74LS173AD is available in an SOIC tube. Verify that substitute parts maintain identical electrical characteristics and pin assignments.