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LTC1685 Production
The LTC1685 is a high speed, precision delay RS485 transceiver that can operate at data rates as high as 52Mbps. The device also meets the requirements...
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LTC1685 on Analog.com

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LTC1685 IBIS model

		
	
				

			

									
					    joakimosth
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Oct 4, 2018 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user inquires about implementing a series resistor on the RO output signal for the LTC1685 transceiver to ensure good signal integrity with 50Ω transmission lines. The support engineer confirms that no IBIS model is available for the LTC1685 but provides an estimate of the output impedance using the VOH specification: (5.0 V - 4.8 V) / 4mA = 50 ohm.
                        	    
    
                
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    Hi!
    

    I like to implement a serie resistor on RO output signal (pin 1) when using 50R transmission lines for good signal integrity. Hence the following questions:
    

    1. Is there any IBIS model available to the LTC1685 transceiver?
    

    2. What is the approximate output impedance of the RO output signal?
    

    Best regards
    

    Joakim
    
			
    
			
									
		                             
                        

    
    
                                            
                 RS-232 / RS-422 / RS-485 / RS-562
                
                                                    
                 transceiver
                
                                                    
                 rs-485
                
                                                    
                 interface
                
                                                    
                 ltc1685
                
                                        
                                            
                
                
                                
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