| Parameters | 
                                                                                                            
                                            | Mount | Surface Mount | 
                                                                            
                                            | Number of Pins | 420 | 
                                                                            
                                            | JESD-609 Code | e0 | 
                                                                            
                                            | Pbfree Code | no | 
                                                                            
                                            | Number of Terminations | 420 | 
                                                                            
                                            | Terminal Finish | Tin/Lead (Sn/Pb) | 
                                                                            
                                            | HTS Code | 8542.39.00.01 | 
                                                                            
                                            | Subcategory | Digital Transmission Interfaces | 
                                                                            
                                            | Terminal Position | BOTTOM | 
                                                                            
                                            | Terminal Form | BALL | 
                                                                            
                                            | Peak Reflow Temperature (Cel) | NOT SPECIFIED | 
                                                                            
                                            | Number of Functions | 1 | 
                                                                            
                                            | Supply Voltage | 3.3V | 
                                                                            
                                            | Terminal Pitch | 1.27mm | 
                                                                            
                                            | Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED | 
                                                                            
                                            | Pin Count | 420 | 
                                                                            
                                            | Qualification Status | Not Qualified | 
                                                                            
                                            | Operating Temperature (Max) | 85°C | 
                                                                            
                                            | Operating Temperature (Min) | -40°C | 
                                                                            
                                            | Power Supplies | 3.3V | 
                                                                            
                                            | Temperature Grade | INDUSTRIAL | 
                                                                            
                                            | Supply Current-Max | 1.21mA | 
                                                                            
                                            | Telecom IC Type | PCM TRANSCEIVER | 
                                                                            
                                            | Height Seated (Max) | 1.7mm | 
                                                                            
                                            | Length | 35mm | 
                                                                            
                                            | Width | 35mm | 
                                                                            
                                            | RoHS Status | RoHS Compliant | 
                                                                                                    
                            
                         
                                                XRT73R12IB Overview
Mounted in the direction of Surface Mount.As part of its configuration, it includes 420 terminations.It operates at a voltage of 3.3V.The telecom interface contains 420 pins.As a telecom IC, PCM TRANSCEIVER is used.The subcategory of Digital Transmission Interfaces includes telecommunications device	.As part of the design process, 1 functions are configured.There is a specific configuration for the pins on the 420 telecom product.Telecommunications equipment supports 85°C as Telecommunications equipments maximum operating temperature.1.21mA is the maximum allowable supply current.There is a minimum operating temperature of -40°C supported by telecommunications equipment.
XRT73R12IB Features
PCM TRANSCEIVER as telecom IC type
XRT73R12IB Applications
There are a lot of Exar Corporation XRT73R12IB Telecom applications. 
- Inverse Multiplexing for ATM (IMA) Wireless Base Stations
- Cross Connects
- DECT (Digital European Cordless Telephone) Base
- Fiber in the loop (FITL)
- Fiber Optic Terminals
- Cable modem
- T1 Digital Cross Connects (DSX-1)
- CSU/DSU Equipment
- Wireless base stations
- Intelligent PBX