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Hi Team,
This Query is regarding TXB0104-Q1 Level Translator,
Q)What is the default state of input/output pins of Port A and Port B If VCCA and VCCB is not supplied?
Q)Once VCCA and VCCB is supplied, does all the Input/Output pin referenced to VCCA and VCCB also get supplied? or does it depend on state of system the pin is connected to?
Hey Srijesh,
Q)What is the default state of input/output pins of Port A and Port B If VCCA and VCCB is not supplied?
The default state of the I/Os will be placed in a high impedance state assuming the power supplies are at 0V when not supplied. Also see the IOFF parameter for more information:
Q)Once VCCA and VCCB is supplied, does all the Input/Output pin referenced to VCCA and VCCB also get supplied? or does it depend on state of system the pin is connected to?
There isn't a default state that the TXB is driven to. The TXB consists of a weak latch that retains the last known state on the ports. If a known specific state is required at startup, a weak pullup/pulldown of greater than >50kohms can be used.
Regards,
Jack
