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AD8561 LATCH pin Logic threshold



		

			

									
						Jake01
					
							

			
				
									
											
							 		
		        	            							
			
			    	
			                    
                
				                on Mar 8, 2017 
				
			
			
		


				
		

		    		    
		    
		    	
			
Hi,

 
I'm looking at the LATCH pin in AD8561.

 
 It seems like LATCH logic threshold values are strange.

 
For example, LATCH pin Logic "0" (TYP) should be less than (MAX).

 
But, Datasheet shows (TYP)=1.6V, (Max) = 0.8V

 
Could anyone explain that?

 

								


				
				
		

			
						
									
									
						
						
			
			
			
			
		


					

			





	

		
	















	

	

					



			


				
	









	
    
	

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                                 Analog Employees 
                                
                            
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                on Mar 17, 2017 6:21 AM
            
            
					
    
	
    

		
		
    
					
    Hi Jake01,
    
 
    If you strictly look on the voltage values, yes the Logic "1" threshold should be in Max column while the Logic "0" threshold should be in Min column. What the data sheet is trying to say is that, to ensure that latch pin has a Logic "1" input across operating conditions, you should have a minimum of 2V. Meanwhile to ensure that latch pin has Logic "0", the voltage should be maximum of 0.8V.
    
 
    Thanks and best regards,
    
 
    Rainier
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
						
				
						
				
				
		
		
    
			
		
    
	
    

    

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                                 Analog Employees 
                                
                            
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                on Aug 2, 2018 3:45 PM
            
            
					
    
	
    

		
		
    
					
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
    EZ Admin
    
			
    

		
		
		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
						
				
				
		
		
    
			
		
    
	
    

    

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