I am trying to solve a problem the this transceiver causes when in the powered down state. There is a sneak path to the (unpowered) 3.3 V supply through the A/B inputs of the transceiver from an active bus. The data sheet shows an equivalent input circuit - Figure 18 - see below. There are three resistors in this circuit (R1, R2, R3), but the values are not given in a table like other TI transceiver data sheets. Can you please tell me the values.
For now I am trying to design with the values from the SN65NVD10 data sheet R1 = 45K; R2,R3 = 9K. Are these the right values?
- Jim Thommes