CY7C4225-15AC

FIFOs Memory Overview

The CY7C4225-15AC is a 1K x 18 synchronous FIFO memory manufactured by Infineon Technologies. It operates at a maximum frequency of 66.7 MHz with a cycle time of 15 ns and an access time of 10 ns. The device features independent read and write clocks, programmable Almost Empty/Full flags, and retransmit functionality. It supports width and depth expansion via cascade pins and is available in 64-pin TQFP or PLCC packages.

FIFOs Memory Feature Summary

• Supports fully asynchronous and simultaneous read/write operations with independent clock domains.
• Includes programmable Almost Empty and Almost Full status flags for precise buffer management.
• Enables depth expansion through dedicated Write and Read Expansion In/Out pins.
• Provides a retransmit function to reset the read pointer for data packet handling.

FIFOs Memory Applications

• High-speed data acquisition systems requiring buffering between disparate clock domains.
• Multiprocessor interfaces needing reliable data transfer synchronization.
• Communications buffering for network protocols and signal processing chains.

FIFOs Memory Procurement Notes

Verify component authenticity against official Infineon documentation due to discontinued status. Confirm package variant (TQFP vs PLCC) and temperature grade (Commercial vs Industrial) matches design requirements. Check for lead-free compliance if RoHS standards apply, as original specifications may vary by manufacturing date.

FIFOs Memory Selection Notes

Select this model for applications requiring 18-bit word width and 1K depth buffering. Ensure voltage supply matches the 5V ± 10% requirement. Consider the -15 speed grade for 66.7 MHz operation. Verify interface compatibility with IDT722x5 series if migrating from legacy designs.

FIFOs Memory Part Context

Part of the CY7C42X5 family of high-speed, low-power synchronous FIFOs. This series includes variants with densities ranging from 64 to 4K words. The CY7C4225 specifically provides 1K x 18 capacity. The family shares pinout and functional compatibility across different density options within the same package types.

FIFOs Memory Replacement Considerations

Public confirmed substitute part numbers: CY7C4225-10AXI, CY7C4225V-15ASC, CY7C4225V-15ASXC.