CY7C421-10JXC

Overview

The CY7C421-10JXC is a 512 x 9 asynchronous FIFO memory in a 32-pin Pb-Free Plastic Leaded Chip Carrier (PLCC) package. It features independent read and write operations at up to 50 MHz with a maximum access time of 10 ns. The device operates on a single 5V supply, drawing 35 mA during operation. It includes Full, Empty, and Half Full flags for flow control and supports width expansion.

Feature Summary

• Asynchronous dual-port RAM architecture enabling independent read and write cycles
• Hardware status flags including Full, Empty, and Half Full indicators
• Retransmit capability for data packet acknowledgment and re-sending
• Supports unlimited depth and width expansion via dedicated control pins

Applications

• Buffering data between components operating at different clock speeds
• Data rate matching in communication interfaces
• Packet buffering in network equipment
• Temporary storage in digital signal processing pipelines

Procurement Notes

Verify the JXC suffix confirms the Pb-free PLCC package type. Confirm the -10 speed grade matches the required 10 ns access time. Ensure the commercial temperature range meets system requirements. Check for RoHS compliance status if applicable to your manufacturing standards.

Selection Notes

Select this part for applications requiring 512-word depth and 9-bit width. Choose the -10 speed grade for high-speed asynchronous transfers. Consider the JXC package for surface mount assembly. Verify that TTL-compatible logic levels are sufficient for the target system voltage.

Part Context

This component belongs to the CY7C419/21/25/29/33 family of asynchronous FIFOs. It shares architectural similarities with other members like the CY7C419 and CY7C425 but differs in memory depth. The family utilizes advanced 0.65-micron CMOS technology.

Replacement Considerations

Pin compatible and functionally equivalent to IDT7201, AM7201, and similar legacy parts. Verify electrical characteristics against specific competitor datasheets before substitution.