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TPS4H160-Q1: [TPS4H160-Q1]0.8 V is input to IN, 2.0V is output from OUT

Masanori Chinone
Prodigy 10 points
Part Number: TPS4H160-Q1

Tool/software:

Could you help to answer our question about the following case?

 

[Case1]

When 0.8 V is input to IN1, IN2, IN3 and IN4, 2.0 V is output from OUT1, OUT2, OUT3 and OUT4.

 

[Case2]

When 3.3 V is input to IN1, IN2, IN3 and IN4, 6.5 V is output from OUT1, OUT2, OUT3 and OUT4.

 

The question is about Case 1.

When 0.8 V is input to IN, is it a part defect that 2 V is output from OUT?

Or is it the right behavior?

051687100.pdf

  • 0
    TI__Genius 9945 points

    Hello, 

    It should be stated that an open load pull-up resistor from VS to VOUT is recommended for operation. Is there one in place? In addition to this, as stated in the datasheet, logic level high is defined as 2V for this device. This could be the reason for the discrepancy in VOUT between cases. Moreover, if the HSS was removed is there still 2v on the output? Finally, if there is no external pull-up resistor there's no leakage path within the device. Can you share a schematic to verify we aren't missing anything?

    Thanks,

    Alan