SN74V235-10PAG

Overview

The SN74V235-10PAG is a synchronous first-in, first-out (FIFO) memory featuring a 2048 x 18-bit organization and 36 kbit storage capacity. It operates with an 18-bit unidirectional data bus and supports maximum clock frequencies up to 100 MHz. The device utilizes high-performance submicron CMOS technology and functions within a 3 V to 3.6 V supply voltage range. It is packaged in a 64-pin Thin Quad Flat Package (TQFP-64) and is characterized for operation between 0°C and +70°C.

Feature Summary

• Supports First-Word Fall-Through (FWFT) and standard timing modes for flexible interface control
• Features programmable almost-empty and almost-full flags with user-configurable offset loading
• Includes half-full flag capability and dual-register-buffered empty/full status indicators
• Enables depth expansion through daisy-chain techniques or width expansion configurations

Applications

• DSP-to-processor communication interfaces
• Buffering for DSP-to-analog front end (AFE) connections
• Network and video data communications systems

Procurement Notes

Verify the specific speed grade suffix '-10' against the manufacturer's current datasheet to confirm the 100 MHz operational limit. Ensure the TQFP-64 package dimensions match the target PCB footprint requirements. Confirm RoHS compliance status and moisture sensitivity level prior to assembly planning.

Selection Notes

Select this component when a 2048-word depth with 18-bit word width is required for synchronous buffering. Consider the SN74V235 series over asynchronous alternatives if precise clock-domain crossing is necessary. Evaluate the FWFT mode benefits for reducing latency in DSP interfacing applications compared to standard read-request architectures.

Part Context

This part belongs to the Texas Instruments SN74V2x5 family of DSP-SYNC FIFO memories. The family includes variants with different depths such as the SN74V215 (512 words), SN74V225 (1024 words), and SN74V245 (4096 words). All members share identical pinouts and functional logic, differing primarily in memory array size and maximum operating frequency specifications.

Replacement Considerations

Direct substitutes include the SN74V235-7PAG for higher speed requirements or the SN74V235-15PAG for lower speed options. Cross-manufacturer equivalents like the Renesas 72V235L15TFGI may require verification of electrical parameter alignment.