SN74ALS299DW

Shift Registers Overview

The SN74ALS299DW is an octal universal shift register manufactured by Texas Instruments, belonging to the SN74ALS logic family. It features eight D-type flip-flops with tri-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 propagation delays of 16 ns. It functions as a bidirectional shift register or an 8-bit static memory element, utilizing serial input/output capabilities alongside parallel load functionality for versatile data handling applications.

Shift Registers Feature Summary

• Supports bidirectional shifting operations controlled by dedicated direction inputs
• Provides tri-state outputs for effective bus line interfacing and isolation
• Enables parallel data loading through specific control pin configurations
• Integrates serial input and output paths for cascaded system expansion

Shift Registers Applications

• Bidirectional data transfer between microprocessor buses and peripheral devices
• Serial-to-parallel and parallel-to-serial data conversion circuits
• Implementation of delay lines and pulse sequence generation
• Construction of linear feedback shift registers for code generation

Shift Registers Procurement Notes

Verify the exact suffix against official Texas Instruments documentation to confirm package type and temperature rating. Confirm RoHS compliance status via current datasheets. Check for obsolescence notices or lifecycle changes before finalizing procurement plans. Ensure compatibility with existing board layouts regarding the SOIC-20 footprint dimensions.

Shift Registers Selection Notes

Select this component when designing systems requiring high-speed octal data storage with flexible input modes. The ALS series offers improved speed-power product compared to standard TTL variants. Consider the tri-state output capability if multiple devices share a common data bus structure. Validate that the operating voltage range aligns with the system power supply specifications.

Shift Registers Part Context

This part belongs to the SN74ALS99x series of octal latches and shift registers produced by Texas Instruments. The ALS (Advanced Low-power Schottky) technology provides faster switching speeds while maintaining lower power consumption than earlier generations. This specific model focuses on shift register functionality rather than simple latching, offering dynamic data movement capabilities within digital logic designs.

Shift Registers Replacement Considerations

SN74ALS299DR is available as a tape-and-reel variant of the same functional device.