CY7C421-30VC

FIFOs Memory Overview

The CY7C421-30VC is an asynchronous FIFO memory device manufactured by Cypress Semiconductor Corp. It features a storage capacity of 512 x 9 bits and supports uni-directional data transfer. The component operates at a maximum frequency of 25 MHz with an access time of 30 ns. It is housed in a 28-pin BSOJ package, measuring 0.300 inches (7.62 mm) in width.

FIFOs Memory Feature Summary

• Asynchronous FIFO architecture for independent clock domain interfacing
• Uni-directional data transfer capability
• Programmable status flags for full and empty conditions

FIFOs Memory Applications

• Buffering data between asynchronous logic systems
• Interface bridging in high-speed digital circuits
• Data rate matching in communication protocols

FIFOs Memory Procurement Notes

Verify the specific suffix VC indicates the 28-pin BSOJ package configuration. Confirm RoHS compliance status as older Cypress parts may not meet current environmental standards. Check for availability from authorized distributors or secondary market suppliers like Rochester Electronics due to potential end-of-life status.

FIFOs Memory Selection Notes

Select this part when asynchronous buffering is required for 9-bit wide data paths. Ensure the 30 ns access time meets system timing requirements. Compare against synchronous alternatives if clock domains are shared. Verify voltage supply compatibility with the target application circuit.

FIFOs Memory Part Context

Part of the CY7C421 series offering various depths and widths. This specific model provides 512-word depth. Similar variants include CY7C421-30JC for PLCC packaging. The series is designed for general-purpose FIFO applications requiring reliable data storage and retrieval.

FIFOs Memory Replacement Considerations

Direct substitutes include other CY7C421 variants with compatible pinouts. Check CY7C421-30JC for PLCC replacement. Verify electrical specifications match before substitution.