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Products Mentioned

MAX33040E Production
The MAX33040E/MAX33041E are +3.3V control area network (CAN) transceivers with integrated protection for industrial applications. These devices have extended...
Datasheet
MAX33040E on Analog.com

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MAX33040E for use in a mixed voltage CANBus

		
	
				

			

									
					    Franz369
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Feb 3, 2026 
				
			
			
		

		
		                    	    

        	    
Thread Summary

                The user inquired if the MAX33040E CAN transceiver, powered at 3.3V, can operate in a mixed voltage bus with transceivers powered at 5V. The final answer confirms that it is generally acceptable due to the wide common mode range and good RX sensitivity of CAN transceivers.
                        	    

                
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Category: Hardware

    		        		            		    
Product Number:  MAX33040E 

    		        		    		    

		    		    
		    			

			    
Hi all,


the part number MAX33040E is a CAN transceiver powered at 3.3V nom.


I would like to know if, as for other transceivers with same characteristic, this too can be used in a mixed voltage bus, 


i.e. in a bus where some transceivers are powered at 3.3V and others at 5V


Thanks in advance





			

			
									
		                                 
Thread Notes  

                

        
                                        
                        

    

                                            
                 interface and isolation
                
                                                    
                 hardware
                
                                                    
                 Automotive Interfaces (CAN Audio)
                
                                                    
                 MAX33040E
                
                                                    
                 interface
                
                                        
                                            
                
                
                                        
                                            
                
                
                                
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