Products Mentioned

LTC6991 Production
The LTC6991 is a silicon oscillator with a programmable period range of 1.024ms to 9.54 hours (29.1µHz to 977Hz), specifically intended for long duration...
Datasheet
LTC6991 on Analog.com

LTC6995-1 Production
The LTC6995 is a silicon oscillator with a programmable period range of 1.024ms to 9.54 hours (29.1μHz to 977Hz), specifically intended for long duration...
Datasheet
LTC6995-1 on Analog.com

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What is the difference between LTC6991 and LTC6995-1?

		
	
				

			

									
					    UBOTI
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jan 31, 2022 
				
			
			
		
    
		
		                    	    
    
        	    
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                The user inquires about using the LTC6991 or LTC6995-1 for a latch circuit, specifically to achieve an L→H output transition when the reset terminal is low. The final answer clarifies that while both can be used, the LTC6995-1 has a reset function that stops the master oscillator and clears internal dividers, which is a key functional difference. The timing diagrams in the datasheets (pages 11-13) highlight these differences.
                        	    
    
                
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    I'm considering a latch circuit and I'm wondering if the LTC6991 or LTC6995-1 could be used there.
    

    When Low is entered in the reset terminal, I want to put it in a latch state with output L⇒H.
    Therefore, I think that either can be used,
    No difference between the two was found in the datasheet.
    Is there a difference?
    
			
    
			
									
		                             
                        

    
    
                                            
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Feb 1, 2022 9:55 PM
            
            
						
			            		
      
		
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      They are different in function, but it is subtle. The key difference is on the description text of the LTC6995 "A reset function is provided to stop the master oscillator and clear internal dividers" It is the stopping and clearing that make the 6995 different. Compare the timing diagrams on page 11-13 of each data sheet and you will see the difference.
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
				
				
				
		
		
      
			
		
      
	
      

      

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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Feb 1, 2022 9:55 PM
            
            
						
			            		
      
		
										+1
					
	
      

		
		
      
		
      
                                
                                                            
      
					
      They are different in function, but it is subtle. The key difference is on the description text of the LTC6995 "A reset function is provided to stop the master oscillator and clear internal dividers" It is the stopping and clearing that make the 6995 different. Compare the timing diagrams on page 11-13 of each data sheet and you will see the difference.
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
				
				
				
		
		
      
			
		
      
	
      

      

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