Hello guys,
One of my customers is going to use TXB0108 with the following connection.
CPU output pin(3.3V, Io=+/-4mA) -> TXB0108(side B, 3.3V) -> TXB0108(side A, 1.8V) -> TXB0108(side A, 1.8V) -> TXB0108(side B, 3.3V) -> CPU input pin (3.3V).
Also the connection line between TXB0108(side A, 1.8V) and TXB0108(side A, 1.8V) has about 30pF capacitance due to a buffer input connecting.
They have a few question about TXB0108 using with the connection.
Could you please give me your reply?
Q1. Is this connection, "TXB0108(side A, 1.8V) -> TXB0108(side A, 1.8V)" no problem? Their signal frequency is 1MHz. Can 1 MHz signal be transferred correctly?
Q2. If deltaT/deltaV of CPU output signal exceeds the maximum recommended value, do you think what happen is in case of this connection?
Q3. What is the internal one shot pulse width at 3.3V VCC and 1.8V VCC? Is it about 50ns?
Q4. What is the output inverter IOH/IOL controlled by the internal one shot pulse?
Your reply would be much appreciated.
Best regards,
Kazuya.
