SN74V225-20PAG

Overview

The SN74V225-20PAG is a synchronous first-in, first-out (FIFO) memory featuring a 1024 x 18-bit organization. It utilizes high-performance submicron CMOS technology to support clock frequencies up to 133 MHz with read-access times as fast as 5 ns. The device operates on a single 3.3-V supply while providing 5-V input tolerance. It includes programmable almost-empty and almost-full flags, half-full flag capability, and supports both standard and first-word fall-through timing modes for flexible data buffering.

Feature Summary

• Supports asynchronous or coincident read and write clocks for independent port operation
• Features dual-register-buffered empty/full flags and programmable offset loading for status monitoring
• Enables depth expansion through daisy-chain techniques or width expansion capabilities
• Provides DSP-SYNC interface logic for direct connection to digital signal processors

Applications

• DSP-to-processor communication interfaces
• Buffering between DSPs and analog front ends
• Network and video data communications systems

Procurement Notes

Verify the specific suffix '20' against official Texas Instruments documentation to confirm package type and temperature range. Ensure the component matches the SCAS636E datasheet specifications for the SN74V225 series. Confirm RoHS compliance status and moisture sensitivity level prior to integration into production assemblies.

Selection Notes

Select this component when a 1024-word depth with an 18-bit data width is required for synchronous buffering. Consider the SN74V225 over other variants if the application demands a balance between moderate storage capacity and high-speed performance up to 133 MHz. Evaluate the need for programmable flags and half-full detection features for precise flow control.

Part Context

This part belongs to the SN74V2x5 family of DSP-SYNC FIFO memories, which also includes the SN74V215, SN74V235, and SN74V245. These devices share identical functional architectures and pinouts but differ in memory array depth. The SN74V225 specifically provides a 1024 x 18 configuration, positioned between the smaller SN74V215 and larger SN74V235 models.

Replacement Considerations

SN74V225-15PAG