| Parameters | 
                                                                                                                        
                                                | Mfr | Fairchild Semiconductor | 
                                                                                    
                                                | Series | 74AC | 
                                                                                    
                                                | Package | Tube | 
                                                                                    
                                                | Product Status | Obsolete | 
                                                                                    
                                                | Logic Type | Binary Counter | 
                                                                                    
                                                | Direction | Up | 
                                                                                    
                                                | Number of Elements | 1 | 
                                                                                    
                                                | Number of Bits per Element | 4 | 
                                                                                    
                                                | Reset | Asynchronous | 
                                                                                    
                                                | Timing | Synchronous | 
                                                                                    
                                                | Count Rate | 167 MHz | 
                                                                                    
                                                | Trigger Type | Positive Edge | 
                                                                                    
                                                | Voltage - Supply | 2 V ~ 6 V | 
                                                                                    
                                                | Operating Temperature | -40°C ~ 85°C | 
                                                                                    
                                                | Mounting Type | Through Hole | 
                                                                                    
                                                | Package / Case | 16-DIP (0.300", 7.62mm) | 
                                                                                    
                                                | Supplier Device Package | 16-PDIP | 
                                                                                    
                                                | Base Product Number | 74AC161 | 
                                                                                    
                                                | RoHS Status | ROHS3 Compliant | 
                                                                                    
                                                | ECCN | EAR99 | 
                                                                                    
                                                | HTSUS | 8542.39.0001 | 
                                                                                    
                                                | Standard Package | 25 | 
                                                                                                                
                                
                             
                                                Counter IC Binary Counter 1 Element 4 Bit Positive Edge 16-PDIP