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LTC1442 Production
The LTC1442 is an ultralow power dual comparator with a built-in voltage reference. The comparators feature less than 5.7µA supply current over temperature...
Datasheet
LTC1442 on Analog.com

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LTC1442 Dual Comparator, LTSpice simulation



		

			

									
					    SRT
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Sep 15, 2022 
				
			
			
		
    

				
		
    
		    		    
		    
		    		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  LTC1442IS8#TRPBF 
    
    		        		    		    	
			
    Hi Team,
    

    In a project, I am using LTC1442 as a window comparator. I have simulated the model in LTSpice. When Out_A and Out_B combined, output is swinging between 2.32V and 3.3V instead of 0 to 3.3V (V- and V+).  This happens only when Out_A and Out_B are connected together. 
    

      
    

    

    Regards
    

    Suresh
    
									
			        
		
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	















    
	
    
	
    
					



			








	
	
	
	



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													+1
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                        
                on Sep 15, 2022 8:52 AM
            
            
					
      
	
      

		
		
      
					
      Hello:
      

      Reading the LTC1442 datasheet it would appear that the two outputs are CMOS and not open drain. So you can't wire OR/AND them together (short). See the pin descriptions on page 9 of the datasheet:
      

      OUT A (Pin 1): Comparator A CMOS Output. Swings from
      V – to V + . Output can source up to 40mA and sink 5mA
      

      OUT B (Pin 8): Comparator B CMOS Output. Swings from
      V – to V + . Output can source up to 40mA and sink 5mA.
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
						
				
				
		
		
      
			
		
      
	
      

      

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													+1
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                        
                on Sep 15, 2022 8:52 AM
            
            
					
      
	
      

		
		
      
					
      Hello:
      

      Reading the LTC1442 datasheet it would appear that the two outputs are CMOS and not open drain. So you can't wire OR/AND them together (short). See the pin descriptions on page 9 of the datasheet:
      

      OUT A (Pin 1): Comparator A CMOS Output. Swings from
      V – to V + . Output can source up to 40mA and sink 5mA
      

      OUT B (Pin 8): Comparator B CMOS Output. Swings from
      V – to V + . Output can source up to 40mA and sink 5mA.
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
						
				
				
		
		
      
			
		
      
	
      

      

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