7202LA20DB

Overview

The Renesas 7202LA20DB is an asynchronous FIFO memory device with a storage capacity of 9K bits, organized as 1K words by 9 bits. It features a unidirectional data bus architecture and supports a maximum data rate of 33.3MHz. The access time is specified at 20ns. The component operates within a supply voltage range of 4.5V to 5.5V and has a maximum supply current of 80mA. It is housed in a 28-pin DIP package and is designed for surface mount installation.

Feature Summary

• Asynchronous dual-port FIFO architecture enabling independent read and write clock domains
• Hardware-based Full and Empty flag generation to prevent buffer overflow or underflow conditions
• Uni-directional data bus configuration for simplified interface integration
• CMOS technology ensuring low power consumption during operation

Applications

• Data buffering between asynchronous logic systems
• Clock domain crossing interfaces in digital signal processing
• Temporary data storage in high-speed communication protocols
• Buffering applications in embedded control systems

Procurement Notes

Verify the specific suffix DB indicates a 28-pin DIP package configuration distinct from SOIC or PLCC variants. Confirm RoHS compliance status as some 7202 series components may have restricted substance declarations. Check for active production status versus obsolescence notices, as this family has undergone multiple lifecycle transitions. Ensure the supplier provides original manufacturer documentation to validate authenticity against counterfeits.

Selection Notes

Select this model when a 9-bit wide data path is required for asynchronous buffering. Compare access times against system timing requirements, noting the 20ns specification. Evaluate package constraints, as the 28-pin DIP form factor differs significantly from the 32-pin PLCC options available in the same series. Consider the unidirectional nature if bidirectional data flow is needed, which would require alternative part numbers.

Part Context

This component belongs to the Renesas 7202L series of asynchronous FIFOs. The series offers various speed grades and package options, including 12ns, 15ns, 20ns, and 30ns variants. The 7202LA20DB specifically represents the 20ns speed grade in a 28-lead dual in-line package. It shares core architectural features with other members like the 7202LA12JG8 but differs in performance metrics and physical footprint.

Replacement Considerations

Direct substitutes include IDT7202LA20SO (SOIC-28) and IDT7202LA20J (PLCC-32) for pin-compatible alternatives with identical electrical characteristics. Verify package dimensions and lead pitch before substitution to ensure mechanical fit on existing PCB layouts.