CY7C4821-25AC

FIFOs Memory Overview

The CY7C4821-25AC is an asynchronous FIFO memory component manufactured by Cypress Semiconductor Corp. It features a 256 x 9 bit organization and supports unidirectional data transfer. The device operates with a clock frequency of up to 100MHz and provides a clock-to-output time of 8ns. It requires a supply voltage range of 4.5V to 5.5V and functions within an ambient temperature range of 0°C to 70°C. The component is housed in a 64-LQFP surface-mount package.

FIFOs Memory Feature Summary

• Asynchronous first-in, first-out memory architecture for buffering data between different clock domains
• High-speed operation supporting data rates up to 100MHz with fast access times
• Low-power consumption characteristics suitable for battery-operated or power-sensitive applications

FIFOs Memory Applications

• Data buffering in high-speed digital signal processing systems
• Interface bridging between components operating at different clock frequencies
• Temporary storage in communication protocol converters

FIFOs Memory Procurement Notes

Verify the specific package variant, as sources indicate both 64-TQFP and 64-LQFP configurations for this part number. Confirm RoHS compliance status, as documentation varies between compliant and non-compliant designations. Ensure the voltage supply requirements match the target system's 4.5V to 5.5V specification before procurement.

FIFOs Memory Selection Notes

Select this component when asynchronous data buffering is required between unsynchronized logic blocks. The 256-word depth is suitable for moderate latency tolerance. Verify that the 5V logic level compatibility aligns with the host system interface. Consider the 64-pin package constraints for PCB layout density and thermal management requirements.

FIFOs Memory Part Context

This component belongs to the CY7C48X1 family of double high-speed, low-power FIFO memories. These devices utilize clocked read and write interfaces to manage data flow efficiently. The family is designed for applications requiring reliable data synchronization without complex control logic overhead.

FIFOs Memory Replacement Considerations

Check for CY7C4821 variants with different speed grades (e.g., -35AC) if timing margins allow. Verify pinout compatibility with alternative FIFO packages from other manufacturers before substitution.