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DS90LT012AQ-Q1: need pullup/down resistor

Part Number: DS90LT012AQ-Q1

Hello team,

My customer want  to confirm the design of DS90LT012AQ-Q1.

Must the input of DS90LT012AQ-Q1 be required by adding pullup/down resistor in case they don't need fail safe circuit function?

if not, The value of Vth is 0V and the value of VTL is -100mV? 



  • Hello Saga-san,

    If the customer doesn't need the fail safe circuit then pullup/down resistors are not required. The differential threshold of the device is -100mV to 0V, meaning if the Input Differential Voltage (VID) equals 0 then the receiver's output will be High.