74173PC

Flip Flops Overview

The DM74173PC is a quad D-type flip-flop manufactured by National Semiconductor, housed in a 16-pin plastic DIP package. It operates with a standard TTL logic family and requires a nominal supply voltage of 5 V. The device supports asynchronous preset and clear functions for each flip-flop, enabling independent control of data storage states. Maximum operating frequency reaches 35 MHz under specified conditions, with a maximum low-level output current of 16 mA. The ceramic or plastic variant ensures reliable performance within the industrial temperature range.

Flip Flops Feature Summary

• Quad configuration providing four independent D-type flip-flops
• Asynchronous preset and clear inputs for direct state control
• Standard TTL logic compatibility for system integration
• Plastic dual in-line package for through-hole mounting

Flip Flops Applications

• Data storage registers in digital systems
• Shift register configurations for serial-to-parallel conversion
• Timing sequence control circuits
• Memory buffer applications in microprocessor interfaces

Flip Flops Procurement Notes

Verify the specific suffix 'PC' indicates the plastic DIP package variant rather than ceramic. Confirm RoHS compliance status as original National Semiconductor documentation may list non-compliance for older batches. Check manufacturer obsolescence notices since National Semiconductor is now part of Texas Instruments. Ensure pinout compatibility with existing PCB footprints before procurement.

Flip Flops Selection Notes

Select this component when a quad D-flip-flop with asynchronous control is required in a TTL environment. Compare propagation delay specifications against system timing requirements. Evaluate power consumption limits relative to other logic families if thermal management is critical. Verify package availability and lead times given potential end-of-life status from the original manufacturer.

Flip Flops Part Context

This device belongs to the standard 74-series logic family, widely used in digital electronics for basic memory and timing functions. The 74173 specifically provides four isolated flip-flops, differing from counters or latches. It serves as a fundamental building block for sequential logic circuits in educational and industrial applications requiring robust TTL interface capabilities.

Flip Flops Replacement Considerations

SN74173N from Texas Instruments offers equivalent functionality and pinout compatibility. DM74S173 provides Schottky TTL speed improvements but maintains logical equivalence. Verify that substitute parts match the 16-pin DIP package dimensions and electrical characteristics precisely.