72T1855L5BB

FIFOs Memory Overview

The Renesas 72T1855L5BB is a TeraSync FIFO memory device housed in a 144-PBGA package. It offers a storage capacity of 72K bits, configurable as 4K x 18 or 8K x 9. Operating at a core voltage of 2.5V (range 2.375V to 2.625V), it supports unidirectional data flow with access times of 10ns for asynchronous mode and 3.6ns for synchronous mode. The device functions at clock rates up to 83MHz and 200MHz respectively.

FIFOs Memory Feature Summary

• Supports both asynchronous and synchronous operation modes within a single component.
• Features TeraSync architecture allowing flexible depth and width configuration.
• Provides programmable full/empty flags and relay capability for data management.

FIFOs Memory Applications

• High-speed data buffering in telecommunications systems
• Clock domain crossing interfaces in digital signal processing
• Data rate matching between peripheral devices and processors

FIFOs Memory Procurement Notes

Verify component authenticity due to obsolete status. Confirm RoHS compliance requirements as the part may not meet current standards. Check moisture sensitivity level handling procedures before assembly. Validate pin compatibility with existing PCB layouts. Ensure supply chain sources are authorized distributors to avoid counterfeit risks.

FIFOs Memory Selection Notes

Select this component for applications requiring mixed-mode FIFO operations. Consider the 144-pin BGA footprint for space-constrained designs. Evaluate power consumption against system thermal limits. Compare performance metrics with newer generations if long-term availability is critical. Verify interface timing constraints match system clock speeds.

FIFOs Memory Part Context

This part belongs to the Renesas 72T series of high-performance FIFO memories. It shares architectural similarities with other TeraSync devices like the 72T1865L5BB but differs in memory density. The series is designed for high-speed data transfer applications requiring reliable buffering capabilities.

FIFOs Memory Replacement Considerations

Public confirmed substitute part numbers: IDT72T1855L5BB. Verify pinout and electrical specifications match exactly before substitution.