CY7C457-20JC

FIFOs Memory Overview

The CY7C457-20JC is an asynchronous FIFO memory component manufactured by Cypress Semiconductor Corp. It features a storage capacity of 2K x 18 bits, providing a total of 36 kilobits of data buffering. The device supports unidirectional data flow with an access time of 15 nanoseconds and operates at a maximum data rate of 50MHz. It functions within a supply voltage range of 4.5V to 5.5V and draws a maximum supply current of 35mA. The component is housed in a 52-pin PLCC package with J-leads, measuring 19.13mm x 19.13mm, and is designed for surface-mount installation.

FIFOs Memory Feature Summary

• Asynchronous operation with clocked read and write interfaces for flexible data buffering
• Unidirectional data transfer capability optimized for high-speed applications
• Compact 52-pin PLCC surface-mount package design

FIFOs Memory Applications

• High-speed data buffering in digital signal processing systems
• Interface bridging between components operating at different clock domains
• Data acquisition systems requiring temporary storage before processing

FIFOs Memory Procurement Notes

Verify the specific suffix '20' confirms the 15ns access time variant, as other suffixes may indicate different speeds. Confirm RoHS compliance status, as some sources indicate non-compliance for this part number. Check for obsolescence or end-of-life status from the manufacturer. Ensure the 52-PLCC footprint matches your PCB layout requirements. Validate that the unidirectional configuration meets your system's data flow needs.

FIFOs Memory Selection Notes

Select this component when asynchronous buffering is required for 18-bit wide data paths. The 15ns access time suits moderate-speed applications up to 50MHz. Consider the 52-pin PLCC package constraints for board space. Compare against synchronous alternatives if clock domain crossing is complex. Verify power consumption limits against system thermal budgets.

FIFOs Memory Part Context

This part belongs to the CY7C45x series of low-power FIFO memories from Cypress. These devices are characterized by 18-bit word width and asynchronous interface timing. The series includes variants with different depths and access times, such as the CY7C455 and CY7C457 models. They are designed for general-purpose data buffering in embedded systems.

FIFOs Memory Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.