SN74LS173ADR

Flip Flops Overview

The SN74LS173ADR is a Texas Instruments 4-bit D-type register featuring 3-state outputs, belonging to the LS logic series. It operates on a supply voltage range of 4.75 V to 5.25 V and supports a maximum clock frequency of 25 MHz. The component utilizes positive edge triggering for data capture. Designed for surface mount installation, it is housed in a 16-pin SOIC package with dimensions of approximately 10 mm by 4 mm. The device functions within an operating temperature range of 0°C to +70°C.

Flip Flops Feature Summary

• Contains four independent D-type flip-flops with dedicated clock inputs for each stage.
• Outputs are controlled by an active-low output enable input, allowing three-state operation for bus-oriented systems.
• Includes a master reset input that asynchronously clears all flip-flop outputs to a low state regardless of clock or data inputs.

Flip Flops Applications

• Data storage and buffering in digital logic circuits
• Shift register configurations for serial-to-parallel conversion
• Timing control and synchronization in sequential logic systems

Flip Flops Procurement Notes

Verify the specific suffix 'ADR' corresponds to the SOIC surface-mount package variant rather than through-hole options like 'AN'. Confirm RoHS compliance status as indicated by potential E-suffixes in ordering codes. Ensure the selected distributor provides official datasheets matching the exact part number to validate pinout and electrical characteristics before integration.

Flip Flops Selection Notes

Select this component when a compact surface-mount solution is required for 4-bit parallel data retention. The LS series offers standard TTL compatibility suitable for general-purpose logic applications. Consider the 3-state output capability if the design requires connecting multiple registers to a common data bus without external tri-state buffers.

Flip Flops Part Context

This device is part of the widely adopted 74LS family of integrated circuits, known for their compatibility with standard transistor-transistor logic (TTL) systems. The SN74LS173 specifically addresses the need for multi-bit storage elements within a single small-scale integration package, serving as a fundamental building block for complex digital architectures.

Flip Flops Replacement Considerations

Equivalent parts include the SN74LS173ADRE4 and SN74LS173ANSRE4, which share identical logical functionality but differ in packaging or manufacturing revisions. Verify pin compatibility and electrical specifications against the original datasheet when substituting.