DS90LV032A: Change fail safe condition to low with external resistors and an external 3.3v supply

Daniel Laprevote

Part Number: DS90LV032A

DS90LV032A is fail safe to high with no input, terminated input or shorted inputs IAW datasheet 8.3.1. Is there any way to change the fail safe condition to low for no input or terminated input with external resistors and an external 3.3v supply? What would the resistor values be and where/how are they attached?

4 months ago

0 Amy 4 months ago

TI__Genius 12601 points

Hi Daniel,

Table 1 in the datasheet shows that you will have to actively drive the input signal such that VID < -0.1V in order for the output to be low.

Please refer to this post with another interested in this application: DS90LV048A: Output LOW on Fail-safe - LVDS Rx

Here is another good reference on this topic: AN-1194 Failsafe Biasing of LVDS Interfaces (Rev. C) (ti.com)

Sincerely,

Amy

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DS90LV032A: Change fail safe condition to low with external resistors and an external 3.3v supply