CY7C4235-15AXC

FIFOs Memory Overview

The CY7C4235-15AXC is a 2K x 18 synchronous FIFO memory manufactured by Cypress Semiconductor. It supports data rates up to 66.7 MHz with a maximum access time of 10 ns and a cycle time of 15 ns. The device operates on a single 5V supply with a typical operating current of 45 mA. It features independent read and write clocks, programmable Almost Full/Empty flags, and retransmit functionality. Available in 64-pin TQFP or 68-pin PLCC packages, it supports width and depth expansion for custom buffering configurations.

FIFOs Memory Feature Summary

• Supports fully asynchronous and simultaneous read/write operations with independent clock domains.
• Includes programmable Almost Full and Almost Empty status flags for precise buffer management.
• Features a retransmit function to acknowledge receipt and retransmit data packets if necessary.
• Enables depth and width expansion through dedicated cascade input/output pins.

FIFOs Memory Applications

• High-speed data acquisition systems requiring temporary storage.
• Multiprocessor interfaces needing reliable data handshaking.
• Communications buffering for network protocols.

FIFOs Memory Procurement Notes

Verify the specific suffix 'AXC' against official datasheets to confirm package type (TQFP vs PLCC) and temperature range (Commercial vs Industrial). Ensure voltage levels match system requirements. Confirm RoHS compliance status as older Cypress parts may vary. Check for obsolescence or lifecycle status before finalizing procurement plans.

FIFOs Memory Selection Notes

Select this component when an 18-bit wide buffer with 2K depth is required. Choose the -15 speed grade for 66.7 MHz operation. Consider the -10 grade for higher speeds or -25/-35 for lower power/frequency needs. Verify pin compatibility with IDT722X5 if replacing existing designs. Ensure expansion capabilities are utilized if larger buffers are needed.

FIFOs Memory Part Context

This part belongs to the CY7C42X5 family of high-speed, low-power synchronous FIFOs. The family includes densities ranging from 64x18 to 4Kx18. The CY7C4235 specifically provides the 2K word capacity within this series, sharing functional compatibility and interface standards with other members like the CY7C4225 and CY7C4245.

FIFOs Memory Replacement Considerations

The datasheet notes pin and function compatibility with the IDT722X5 series. Specific substitute part numbers are not explicitly listed in the provided text; verify cross-reference availability with original manufacturers for equivalent speed grades and packages.