CY7C457-20JI

FIFOs Memory Overview

The CY7C457-20JI is a high-speed CMOS static RAM (SRAM) device manufactured by Cypress Semiconductor. It features a 1M-bit capacity organized as 128K words by 8 bits. The -20JI suffix indicates a 20ns access time and a plastic DIP package with industrial temperature range support. Key electrical parameters include a supply voltage of 5V, low standby current, and fast output enable times. It utilizes standard TTL-compatible logic levels for inputs and outputs, ensuring compatibility with various microprocessor systems.

FIFOs Memory Feature Summary

• High-speed data access capabilities suitable for demanding processing applications
• CMOS technology providing low power consumption during operation
• TTL-compatible input and output interfaces for broad system integration
• Static RAM architecture retaining data without requiring refresh cycles

FIFOs Memory Applications

• Microprocessor-based memory systems
• Cache memory implementations in embedded controllers
• Industrial control systems requiring reliable data storage
• Test equipment internal memory buffers

FIFOs Memory Procurement Notes

Verify the exact suffix codes against official Cypress or Infineon datasheets to confirm speed grade and package type. Ensure the component matches the required industrial temperature range specifications. Cross-reference part numbers with current manufacturer portfolios as Cypress SRAM lines may have been integrated into broader product families. Confirm pinout compatibility if replacing legacy designs.

FIFOs Memory Selection Notes

Select this component when a 128Kx8 SRAM configuration with 20ns access time is required. Consider the plastic DIP package constraints for through-hole mounting requirements. Evaluate power dissipation limits relative to the system's thermal design. Verify that the 5V supply voltage aligns with the target platform's logic levels before finalizing the bill of materials.

FIFOs Memory Part Context

This part belongs to the CY7C4xx series of high-speed SRAMs from Cypress Semiconductor. These devices were designed to provide non-volatile-like performance with volatile speed advantages. The series supports various capacities and speeds, catering to different memory bandwidth needs in computing and industrial electronics. The CY7C457 specifically addresses the 1M-bit density segment within this portfolio.

FIFOs Memory Replacement Considerations

Check for direct cross-references from Infineon, which acquired Cypress. Verify equivalent parts such as the CY7C457-20JC for commercial grade variants if temperature ranges differ. Ensure any substitute maintains the same 128Kx8 organization and 20ns timing characteristics. Confirm package dimensions match existing PCB footprints.