| Parameters | 
                                                                                                                        
                                                | Mfr | onsemi | 
                                                                                    
                                                | Series | 74F | 
                                                                                    
                                                | Package | Tube | 
                                                                                    
                                                | Product Status | Obsolete | 
                                                                                    
                                                | Type | Identity Comparator | 
                                                                                    
                                                | Number of Bits | 8 | 
                                                                                    
                                                | Output | Active Low | 
                                                                                    
                                                | Output Function | A=B | 
                                                                                    
                                                | Voltage - Supply | 4.5V ~ 5.5V | 
                                                                                    
                                                | Current - Output High, Low | 1mA, 20mA | 
                                                                                    
                                                | Max Propagation Delay @ V, Max CL | 10ns @ 5V, 50pF | 
                                                                                    
                                                | Operating Temperature | 0°C ~ 70°C | 
                                                                                    
                                                | Package / Case | 20-SSOP (0.209", 5.30mm Width) | 
                                                                                    
                                                | Supplier Device Package | 20-SSOP | 
                                                                                    
                                                | Mounting Type | Surface Mount | 
                                                                                    
                                                | Base Product Number | 74F521 | 
                                                                                    
                                                | Moisture Sensitivity Level (MSL) | 1  (Unlimited) | 
                                                                                    
                                                | REACH Status | REACH Unaffected | 
                                                                                    
                                                | ECCN | EAR99 | 
                                                                                    
                                                | HTSUS | 8542.39.0001 | 
                                                                                    
                                                | Standard Package | 66 | 
                                                                                                                
                                
                             
                                                Magnitude Comparator Bit Active Low Output A=B 20-SSOP