SN74LS165AD

Shift Registers Overview

The SN74LS165AD is an 8-bit parallel-load shift register from the Texas Instruments SN74LS series. It converts parallel data inputs into a serial output stream, facilitating efficient data transmission in digital systems. The device operates within a supply voltage range of 4.75 V to 5.25 V and features a propagation delay of 25 ns. It is housed in a SOIC-Narrow-16 package and supports an operating temperature range from 0°C to +70°C.

Shift Registers Feature Summary

• Parallel-to-serial conversion capability for expanding input lines
• Synchronous parallel load function for immediate data capture
• Compatible with standard TTL logic families

Shift Registers Applications

• Expanding microcontroller input ports
• Keyboard matrix scanning
• Switch state monitoring

Shift Registers Procurement Notes

Verify the specific suffix 'AD' corresponds to the SOIC-Narrow-16 package and commercial temperature grade. Confirm RoHS compliance status as manufacturing processes evolve. Ensure the source document explicitly lists SN74LS165AD rather than generic family members. Check for any recent Product Change Notifications affecting pinout or electrical characteristics.

Shift Registers Selection Notes

Select this component when parallel-to-serial conversion is required for 8-bit data streams. It is suitable for designs needing synchronous loading and low power consumption typical of LS logic. Consider the SOIC-Narrow-16 package constraints for PCB layout. Verify that the 25 ns propagation delay meets system timing requirements.

Shift Registers Part Context

This part belongs to the SN74LS165A family of 8-bit shift registers. It shares functional similarities with other LS-series logic devices but offers specific parallel-load capabilities. The SN74LS165AD variant specifically denotes the surface-mount SOIC-Narrow-16 packaging option provided by Texas Instruments.

Shift Registers Replacement Considerations

SN74LS165AN (PDIP-16 package)

Shift Registers FAQ

What is the primary function of the SN74LS165AD?

It functions as an 8-bit parallel-load shift register, converting parallel data inputs into a serial output.

Does the SN74LS165AD support synchronous parallel loading?

Yes, it includes a synchronous parallel load feature that allows data to be loaded directly from the parallel inputs.