7204L20LB

Overview

The Renesas Electronics Corporation 7204L20LB is a parallel CMOS First-In-First-Out (FIFO) memory device. It features a storage organization of 4K words by 9 bits, providing a total capacity of 36 kilobits. The component operates within a supply voltage range of 4.5 V to 5.5 V and supports an access time of 20 ns. It is housed in a 32-lead Leadless Ceramic Chip Carrier (LCC) package.

Feature Summary

• Supports asynchronous and simultaneous read and write operations for data buffering.
• Utilizes Full and Empty status flags to prevent data overflow and underflow conditions.
• Features auto-retransmit capability allowing the read pointer to reset to its initial position.

Applications

• Multiprocessing systems requiring data synchronization between processors.
• Rate buffer applications involving mismatched data transfer speeds.
• High-speed digital signal processing interfaces.

Procurement Notes

Verify current availability as the manufacturer has issued a Product Discontinuance Notification indicating end-of-life status. Confirm RoHS compliance requirements against the specific revision, as documentation indicates non-compliance. Source replacement components from authorized distributors or secondary markets due to limited stock. Validate pin compatibility with existing designs before procurement.

Selection Notes

Select this component for legacy designs requiring a 4Kx9 parallel FIFO interface. Ensure the system accommodates the LCC-32 surface mount package constraints. Verify that the 20 ns access time meets the timing requirements of the host bus. Consider alternative asynchronous FIFOs if lead-free manufacturing is mandatory for the application.

Part Context

This part belongs to the 7204L series of high-speed asynchronous FIFOs manufactured by Renesas Electronics. The series is designed for multiprocessing and rate matching applications. The 7204L20LB specifically denotes the 20 nanosecond access speed variant within the 4Kx9 density family.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the End-of-Life status, verify functional equivalence with other 4Kx9 asynchronous FIFOs from different manufacturers.