| Parameters | 
                                                                                                                        
                                                | Mfr | STMicroelectronics | 
                                                                                    
                                                | Series | 4000B | 
                                                                                    
                                                | Package | Tube | 
                                                                                    
                                                | Product Status | Obsolete | 
                                                                                    
                                                | Logic Type | Binary Counter | 
                                                                                    
                                                | Direction | Up | 
                                                                                    
                                                | Number of Elements | 2 | 
                                                                                    
                                                | Number of Bits per Element | 4 | 
                                                                                    
                                                | Reset | Asynchronous | 
                                                                                    
                                                | Timing | - | 
                                                                                    
                                                | Count Rate | 8 MHz | 
                                                                                    
                                                | Trigger Type | Positive, Negative | 
                                                                                    
                                                | Voltage - Supply | 3 V ~ 20 V | 
                                                                                    
                                                | Operating Temperature | -55°C ~ 125°C | 
                                                                                    
                                                | Mounting Type | Through Hole | 
                                                                                    
                                                | Package / Case | 16-DIP (0.300", 7.62mm) | 
                                                                                    
                                                | Supplier Device Package | 16-DIP | 
                                                                                    
                                                | Base Product Number | HCF4520 | 
                                                                                    
                                                | RoHS Status | ROHS3 Compliant | 
                                                                                    
                                                | Moisture Sensitivity Level (MSL) | 1  (Unlimited) | 
                                                                                    
                                                | REACH Status | REACH Unaffected | 
                                                                                    
                                                | ECCN | EAR99 | 
                                                                                    
                                                | HTSUS | 8542.39.0001 | 
                                                                                    
                                                | Standard Package | 25 | 
                                                                                                                
                                
                             
                                                Counter IC Binary Counter 2 Element 4 Bit Positive, Negative 16-DIP