SN74ALS165D

Shift Registers Overview

The SN74ALS165D is an 8-bit parallel-load shift register from Texas Instruments, belonging to the Advanced Low-Power Schottky (ALS) logic family. It converts parallel data inputs into a serial output stream via a single serial input line. The device operates within a supply voltage range of 4.5 V to 5.5 V and features a propagation delay of 14 ns. It is housed in a 16-pin Small Outline Integrated Circuit (SOIC) package designed for surface-mount applications.

Shift Registers Feature Summary

• Supports simultaneous parallel loading of eight bits of data
• Shifts data serially on clock pulses with independent serial input
• Includes asynchronous clear function to reset all stages

Shift Registers Applications

• Parallel-to-serial data conversion in communication interfaces
• Expansion of I/O ports in microcontroller systems
• Input scanning for keyboard or switch matrices

Shift Registers Procurement Notes

Verify the specific suffix 'D' confirms the SOIC-16 surface mount package variant. Confirm the ALS logic series designation matches system requirements for bipolar speed and power characteristics. Ensure the manufacturer source is Texas Instruments to guarantee specification compliance.

Shift Registers Selection Notes

Select this component when high-speed shifting is required compared to standard LS logic. The ALS family offers faster switching speeds while maintaining lower power consumption than standard TTL. Verify that the 14 ns propagation delay fits the timing constraints of the target digital circuit design.

Shift Registers Part Context

This part belongs to the SN74ALS165A family of 8-bit shift registers. It provides parallel-in serial-out functionality essential for data transmission tasks. The device integrates dedicated control inputs for load and clear operations alongside the primary clock and serial data lines.

Shift Registers Replacement Considerations

SN74ALS165AD: Identical functional specifications with confirmed SOIC-16 packaging compatibility.