| Parameters | 
                                    
                                                                                                            
                                        | Mfr | 
                                        National Semiconductor | 
                                    
                                                                        
                                        | Series | 
                                        54LS | 
                                    
                                                                        
                                        | Package | 
                                        Bulk | 
                                    
                                                                        
                                        | Product Status | 
                                        Active | 
                                    
                                                                        
                                        | Type | 
                                        Data Selector/Multiplexer | 
                                    
                                                                        
                                        | Circuit | 
                                        4 x 2:1 | 
                                    
                                                                        
                                        | Independent Circuits | 
                                        1 | 
                                    
                                                                        
                                        | Current - Output High, Low | 
                                        400µA, 4mA | 
                                    
                                                                        
                                        | Voltage Supply Source | 
                                        Single Supply | 
                                    
                                                                        
                                        | Voltage - Supply | 
                                        4.5V ~ 5.5V | 
                                    
                                                                        
                                        | Operating Temperature | 
                                        -55°C ~ 125°C | 
                                    
                                                                        
                                        | Mounting Type | 
                                        Surface Mount | 
                                    
                                                                        
                                        | Package / Case | 
                                        16-CFlatpack | 
                                    
                                                                        
                                        | Supplier Device Package | 
                                        16-CFlatPack | 
                                    
                                                                        
                                        | Base Product Number | 
                                        54LS157 | 
                                    
                                                                        
                                        | RoHS Status | 
                                        RoHS non-compliant | 
                                    
                                                                        
                                        | Moisture Sensitivity Level (MSL) | 
                                        3  (168 Hours) | 
                                    
                                                                        
                                        | REACH Status | 
                                        REACH Unaffected | 
                                    
                                                                        
                                        | ECCN | 
                                        EAR99 | 
                                    
                                                                        
                                        | HTSUS | 
                                        8542.39.0001 | 
                                    
                                                                        
                                        | Standard Package | 
                                        1 | 
                                    
                                                                                                        
                            
                         
                                                Data Selector/Multiplexer 4 x 2:1 16-CFlatPack