Part Number: TXB0108
We are not able to see the TXB driving the output signal to 0v. Instead it is 1v. Attached file has the design information as well as waveforms.
Your help is highly appreciated, please let me know if you need any other information.
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In reply to Vivek V41:
Hello Vivek, The problem is the RPU you are using. Here are some app notes you should read which will guide you on which pullup resistor values you should use and what impact they create.
In reply to Karan Kotadia:
I tested even by removing pullups on both the side of the level shifter on one of the lines. Still the problem persists
The device driving TXB chip is our own internal ASIC which has CMOS pins. To be precise we are interfacing it with QSPI Pins .
Can you please direct me to the specification related to the sink current 20uA you are referring?
I understand it now and appreciate your prompt responses.
Will it be okay to use TXS0108EPWR? From the data sheet I see the IOL as 200uA and VOL as 0.5v. The 0.5V should be good enough to be recognized as logic 0.
If yes, will you be able to get us some sample part to India?
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