7205L30DB

Overview

The Renesas 7205L30DB is an asynchronous FIFO memory IC with a storage capacity of 72K bits, organized as 8K words by 9 bits. It features a unidirectional bus architecture and supports simultaneous read and write operations. The device operates within a supply voltage range of 4.5 V to 5.5 V and has a maximum access time of 30 ns. It includes status flags for Full, Empty, and Half-Full conditions, along with auto-retransmit capability. The component is available in 28-pin PDIP packages.

Feature Summary

• Supports asynchronous and simultaneous read/write operations for multiprocessing applications
• Includes Full, Empty, and Half-Full status flags to prevent data overflow and underflow
• Features auto-retransmit capability allowing reset of the read pointer to its initial position
• Pin and functionally compatible with the broader 720X family of devices

Applications

• Multiprocessing systems requiring data buffering
• Rate buffer applications between asynchronous domains
• Data acquisition systems needing temporary storage
• Communication interfaces requiring flow control

Procurement Notes

Verify RoHS compliance status as the product may not meet current environmental regulations. Confirm package type availability, as the 7205L30DB specifically denotes a 28-pin DIP variant. Check for obsolescence notices or last-time buy notifications from Renesas. Ensure design-in compatibility with existing 720X family footprints if replacing older components. Validate operating temperature range requirements against specific industrial or commercial grades.

Selection Notes

Select this component when a unidirectional asynchronous FIFO with 8K x 9 organization is required. Choose based on the 30 ns access time specification for high-speed buffering needs. Consider the 28-pin PDIP package for through-hole mounting requirements. Verify that the 5V logic interface matches the system voltage levels. Evaluate the need for retransmit functionality for error recovery in critical data paths.

Part Context

The 7205L30DB belongs to the Renesas 720X series of CMOS parallel FIFO memories. This series is designed for high-speed data buffering in complex digital systems. The 7205 variant specifically offers 8K x 9 depth. The 'L' suffix typically indicates leaded packaging, while '30' denotes the 30 ns speed grade. The 'DB' suffix specifies the 28-pin dual in-line package configuration.

Replacement Considerations

Direct substitutes include other members of the 720X family such as the IDT7205L30. Verify pinout compatibility before substitution. Ensure the replacement part meets the same 30 ns access time and 8K x 9 organization specifications. Check for equivalent package dimensions and thermal characteristics.