| Parameters | 
                                                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                            
                                            | Package / Case | 324-BGA | 
                                                                            
                                            | Operating Temperature | 0°C~70°C | 
                                                                            
                                            | Packaging | Tray | 
                                                                            
                                            | Series | 72T | 
                                                                            
                                            | Part Status | Obsolete | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 4 (72 Hours) | 
                                                                            
                                            | Voltage - Supply | 2.375V~2.625V | 
                                                                            
                                            | Base Part Number | 72T51258 | 
                                                                            
                                            | Function | Synchronous | 
                                                                            
                                            | Current - Supply (Max) | 260mA | 
                                                                            
                                            | Memory Size | 2.5M 16K x 40 x 4 | 
                                                                            
                                            | Access Time | 3.6ns | 
                                                                            
                                            | Data Rate | 200MHz | 
                                                                            
                                            | Bus Directional | Uni-Directional | 
                                                                            
                                            | Retransmit Capability | No | 
                                                                            
                                            | Programmable Flags Support | Yes | 
                                                                            
                                            | RoHS Status | Non-RoHS Compliant | 
                                                                                                    
                            
                         
                                                IDT72T51258L5BB Overview
324-BGA  is a package that contains FIFO memory chip.There is a case Tray in which it is packaged.Apps and data can be stored in the 2.5M 16K x 40 x 4 memory of the FIFO chip.To ensure reliable operation, the temperature should be regulated to 0°C~70°C .It is mounted in the Surface Mount position.A voltage supply of 2.375V~2.625V is needed to operate it.A component in the 72T series, this is an memory logic.As far as operating current is concerned, it has a maximum of 260mA .I believe it belongs to the 72T51258 family of numbers.
IDT72T51258L5BB Features
2.5M 16K x 40 x 4 memory size
72T series
Best part number of 72T51258
IDT72T51258L5BB Applications
There are a lot of Renesas Electronics America Inc. IDT72T51258L5BB  FIFOs Memory applications. 
- Networking
- Wireless
- Routers
- Data-acquisition systems
- High-speed graphics pixel buffer
- Consumer
- SPI Bus Flash Memory Device
- One assembly 
- Computer Systems
- A/D output buffers