72T3645L4-4BB

FIFOs Memory Overview

The Renesas 72T3645L4-4BB is a high-performance asynchronous/synchronous FIFO memory device designed for complex data buffering and bus-matching applications. It features a storage capacity of 144K bits, organized as 4096 words by 36 bits. The component supports dual-clock operation with maximum frequencies of 100MHz for the write port and 225MHz for the read port, achieving access times of 8ns and 3.4ns respectively. Powered by a 2.375V to 2.625V supply, it operates within a commercial temperature range of 0°C to 70°C and is housed in a 208-pin PBGA package.

FIFOs Memory Feature Summary

• Supports flexible asynchronous or synchronous clocking modes for versatile interface integration
• Provides user-selectable input/output bus sizing to match varying system data widths
• Includes programmable flags and full/empty status indicators for precise flow control
• Features auto power-down capability to minimize standby power consumption

FIFOs Memory Applications

• Network equipment data buffering
• Video signal processing systems
• Telecommunications infrastructure
• Data communications interfaces

FIFOs Memory Procurement Notes

Verify RoHS compliance status carefully, as this specific part number may not meet current environmental regulations. Confirm package availability and lead times directly with authorized distributors, noting that older generation FIFOs may have limited stock. Ensure voltage levels align with system requirements before procurement.

FIFOs Memory Selection Notes

Select this component when high-speed data rate translation between asynchronous and synchronous domains is required. The 36-bit width suits wide-bus applications, while the dual-clock architecture allows independent timing optimization for read and write paths. Consider thermal management within the specified operating range during design.

FIFOs Memory Part Context

This part belongs to the IDT 72T series of SuperSync II FIFO memories, known for high-density buffering and flexible configuration options. It serves as a bridge for matching buses of unequal sizes and speeds in high-throughput environments. The series is widely recognized for reliability in networking and video applications requiring large data buffers.

FIFOs Memory Replacement Considerations

Check for pin-compatible alternatives within the same family, such as the 72V3660, though voltage differences must be verified. Ensure any substitute maintains the 36-bit width and similar speed grades. Consult official replacement notices for discontinued parts to identify qualified cross-references.