72261LA10PF

Overview

The Renesas 72261LA10PF is a synchronous First-In, First-Out (FIFO) memory device designed for high-speed data buffering applications. It features a storage capacity of 512 words by 9 bits, providing a total depth of 4.5K bits. The component supports a maximum clock frequency of 100 MHz with a typical access time of 10 nanoseconds. It operates on a single 5.0V power supply and utilizes a unidirectional bus architecture. The device is housed in a 64-pin Thin Quad Flat Package (TQFP) with a 14x14 mm footprint, suitable for surface-mount assembly.

Feature Summary

• Synchronous operation with independent read and write clocks allows flexible interface timing.
• Configurable full/empty flags provide status monitoring for buffer management.
• Unidirectional data flow simplifies integration into point-to-point communication links.

Applications

• Data buffering in graphics processing systems
• Interprocessor communication interfaces
• Local area network data handling

Procurement Notes

Verify RoHS compliance status as older variants may not meet current environmental standards. Confirm package marking accuracy to distinguish from similar 722xx series components. Check for end-of-life notices or obsolescence warnings before finalizing design-in decisions. Ensure voltage levels match the 5.0V specification strictly.

Selection Notes

Select this component when a 512x9 synchronous FIFO is required at 5.0V logic levels. Compare against the 72V211 if a 3.3V operating voltage is necessary instead. Consider pinout compatibility with existing PCB layouts utilizing the 64-TQFP form factor. Verify that the 100MHz speed requirement aligns with system clock constraints.

Part Context

This part belongs to the Renesas 72200 series of synchronous FIFOs, which are widely used for data rate matching and buffering. It serves as a legacy alternative to the 72V211, differing primarily in supply voltage requirements. The series is known for reliable performance in embedded control and communication subsystems.

Replacement Considerations

The 72V211LA10PFG is a direct functional equivalent operating at 3.3V. Verify voltage tolerance differences before substitution. Other 722xx family members offer different depths but share similar control logic.