CY7C425-20JXC

FIFOs Memory Overview

The CY7C425-20JXC is a 1K x 9 asynchronous FIFO memory component manufactured by Cypress Semiconductor, now part of Infineon Technologies. It features dual-port RAM cells enabling independent read and write operations at frequencies up to 50.0 MHz. The device operates on a single 5V supply with TTL-compatible inputs and outputs. Key specifications include a maximum access time of 20 ns, an operating current (ICC) of 35 mA, and standby current (ISB1) of 10 mA. It provides Full, Empty, and Half Full status flags for flow control.

FIFOs Memory Feature Summary

• Asynchronous first-in first-out buffer memory architecture
• Dual-port RAM cell design for independent read/write operations
• Hardware flow control via Full, Empty, and Half Full flags
• Retransmit capability for data packet acknowledgment

FIFOs Memory Applications

• Data buffering between asynchronous clock domains
• Interface bridging in high-speed digital systems
• Packet storage and retransmission logic
• Width or depth expansion configurations

FIFOs Memory Procurement Notes

Verify the specific suffix 'JXC' indicates a Pb-Free Plastic Leaded Chip Carrier package. Confirm the '-20' speed grade corresponds to the required 20 ns access time. Ensure the commercial temperature range meets system requirements. Cross-reference ordering codes against current Infineon/Cypress documentation as product lines may have evolved since the original datasheet publication.

FIFOs Memory Selection Notes

Select this component when a 1024-word depth with 9-bit width is required. The 20 ns speed grade suits applications needing moderate throughput without the latency of slower variants. Consider the JXC package for lead-free compliance. Evaluate if the standalone or width expansion modes meet interface needs, noting that depth expansion requires external flag logic.

FIFOs Memory Part Context

This part belongs to the CY7C4xx series of asynchronous FIFOs, which includes capacities from 256x9 to 4Kx9. The CY7C425 specifically offers 1K x 9 organization. It is functionally equivalent to legacy parts like the IDT7202 and AM7202. The series utilizes advanced CMOS technology for low power consumption and high-speed operation.

FIFOs Memory Replacement Considerations

Functionally equivalent substitutes include IDT7202, IDT7201, AM7200, and AM7201. Verify pin compatibility and electrical characteristics before substitution. Note that newer generations may offer different packaging or speed grades.