CY7C4245-15ASC

FIFOs Memory Overview

The CY7C4245-15ASC is a high-speed, low-power synchronous FIFO memory with an 18-bit data width and 4K x 18 word depth. It supports asynchronous read and write operations using independent clocks. The device features programmable Almost Full and Almost Empty flags, retransmit capability, and expansion options for both width and depth. It operates at a maximum frequency of 66.7 MHz with a cycle time of 15 ns. The component is available in 64-pin TQFP and 68-pin PLCC packages.

FIFOs Memory Feature Summary

• Supports fully asynchronous and simultaneous read/write operations with independent clock inputs.
• Includes programmable status flags for Almost Full and Almost Empty conditions.
• Enables depth expansion through cascade pins for increased buffering capacity.
• Provides retransmit functionality to repeat previously written data sequences.

FIFOs Memory Applications

• High-speed data acquisition systems
• Multiprocessor interface buffering
• Communications data buffering

FIFOs Memory Procurement Notes

Verify the specific suffix ASC against official Cypress/Infineon documentation to confirm package type and temperature range. Confirm RoHS compliance status as historical datasheets may list non-compliant variants. Check current manufacturer lifecycle status, as older CY7C series parts are frequently discontinued or subject to limited supply constraints.

FIFOs Memory Selection Notes

Select this part for applications requiring 18-bit wide data paths and deep buffering up to 4096 words. Ensure system timing meets the 15 ns cycle time requirement. Consider width expansion if wider buses are needed, or depth expansion for larger buffers. Verify voltage compatibility with the standard 5V operation specified for this family.

FIFOs Memory Part Context

This component belongs to the CY7C42X5 family of synchronous FIFOs, which includes densities ranging from 64x18 to 4Kx18. The CY7C4245 specifically provides the largest storage capacity within this series. These devices are pin-compatible with IDT722x5 counterparts and utilize advanced CMOS technology for low power consumption.

FIFOs Memory Replacement Considerations

Officially documented compatible substitutes include other members of the CY7C42X5 family such as CY7C4235 (2K x 18) or CY7C4225 (1K x 18) if reduced depth is acceptable. Cross-brand equivalents like IDT722x5 are noted as functionally compatible in datasheet descriptions.