| Parameters | 
                                                                                                            
                                            | Mfr | Analog Devices Inc./Maxim Integrated | 
                                                                            
                                            | Series | - | 
                                                                            
                                            | Package | Tube | 
                                                                            
                                            | Product Status | Obsolete | 
                                                                            
                                            | Function | - | 
                                                                            
                                            | Interface | Parallel/Serial | 
                                                                            
                                            | Number of Circuits | 4 | 
                                                                            
                                            | Voltage - Supply | 2.97V ~ 3.63V | 
                                                                            
                                            | Current - Supply | 75mA | 
                                                                            
                                            | Operating Temperature | 0°C ~ 70°C | 
                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                            
                                            | Package / Case | 128-LQFP | 
                                                                            
                                            | Supplier Device Package | 128-LQFP (14x20) | 
                                                                            
                                            | Base Product Number | DS21Q44 | 
                                                                            
                                            | RoHS Status | ROHS3 Compliant | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 4  (72 Hours) | 
                                                                            
                                            | REACH Status | REACH Unaffected | 
                                                                            
                                            | ECCN | EAR99 | 
                                                                            
                                            | HTSUS | 8542.39.0001 | 
                                                                            
                                            | Standard Package | 72 | 
                                                                                                    
                            
                         
                                                Telecom IC 128-LQFP (14x20)