72221L15J

Overview

The 72221L15J is a synchronous First-In, First-Out (FIFO) memory device manufactured by Renesas Electronics. It features a storage capacity of 1K x 9 bits and supports data rates up to 66.7MHz with a 10ns access time. The component operates on a single 3V to 3.6V power supply and draws a maximum current of 20mA. It utilizes a 32-pin PLCC package and is designed for commercial temperature ranges from 0°C to 70°C.

Feature Summary

• Supports both single-clock and dual-clock asynchronous operation modes via independent read and write clock controls.
• Provides programmable flags to indicate FIFO status conditions such as full or empty states.
• Features 9-bit input and output ports suitable for standard data bus widths.

Applications

• Graphics data buffering
• Local area network communication interfaces
• Interprocessor data transfer

Procurement Notes

Verify the specific ordering suffix J against the manufacturer's official documentation to confirm the exact package type and lead-free status. Confirm moisture sensitivity levels and handling requirements prior to assembly. Ensure compatibility with existing system voltage levels and clock frequencies before finalizing procurement decisions.

Selection Notes

Select this component when a 1K x 9 synchronous FIFO architecture is required for data buffering applications. Consider the 32-pin PLCC package constraints and commercial temperature range limitations during design integration. Evaluate the need for programmable flags and dual-clock capabilities relative to system timing requirements.

Part Context

This part belongs to the 72221 series of synchronous FIFO memories. It serves as a 3.3V version within the broader family of high-speed buffer devices. The series is designed to handle data rate mismatches between different system components efficiently.

Replacement Considerations

Check for direct pin-compatible alternatives within the same product family. Verify if updated revisions offer improved environmental compliance or extended temperature ranges while maintaining functional equivalence.