SN74ALS299NS

Shift Registers Overview

The SN74ALS299NS is an 8-bit universal shift/storage register manufactured by Texas Instruments. It features three-state outputs and is housed in a 20-pin SOIC package. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports data rates up to 35 MHz. It functions as both a parallel-in/parallel-out storage register and a serial-in/serial-out or serial-in/parallel-out shift register, controlled by dedicated mode select inputs.

Shift Registers Feature Summary

• Supports bidirectional shifting and parallel loading operations
• Includes three-state outputs for bus driving applications
• Provides independent clock inputs for shift and storage modes

Shift Registers Applications

• Data buffering in digital systems
• Serial-to-parallel conversion circuits
• Parallel-to-serial conversion interfaces

Shift Registers Procurement Notes

Verify the specific suffix 'NS' corresponds to the SOIC-20 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design compatibility with the specified 4.5 V to 5.5 V operating voltage range and temperature specifications.

Shift Registers Selection Notes

Select this component for designs requiring versatile shift-register functionality with high-speed performance. The ALS series offers improved speed-power product compared to standard TTL. Consider the three-state output capability if the register must share a common data bus with other devices in the system architecture.

Shift Registers Part Context

This part belongs to the SN74ALS family of logic integrated circuits from Texas Instruments. The ALS (Advanced Low-Power Schottky) series is designed to provide faster switching speeds while maintaining lower power consumption than previous generations. The SN74ALS299 specifically addresses needs for configurable data movement in complex digital logic designs.

Shift Registers FAQ

What are the primary control inputs for the SN74ALS299NS?

The device utilizes Mode Select inputs (M1, M2) to determine operation between shift and storage modes, along with separate Clock inputs for shift and storage operations.

Can the SN74ALS299NS operate at frequencies higher than 35 MHz?

No, the datasheet specifies a maximum data rate of 35 MHz. Operating beyond this limit may result in timing violations or unreliable data transfer.