Part Number: SN74CB3T3306
Please allow me to confirm whether SN74CB3T3306 could be used as a I2C level shifter.
Customer is planning to use this device as following, can this use case supported for this device ?
* I understand that TCA9517 would best match for this application, however, please tell us if SN74CB3T3306 could be used or not.
In reply to Patrick Simmons:
In reply to T.KAWAI:
Thank you for your patience. Based on my preliminary measurements, you should be able to use this part for I2C. The bandwidth is 100MHz well above the max of an I2C clock even when operated in ultra fast mode.
The measurements I have done so far were to assess if the signal could be pulled low from either side for bidirectional communication, as well as see what the voltage levels would be if both sides (A and B) see an open drain.
The basic test setup I used is illustrated below. In case 1, both inputs 1A and 1B are left floating and were pulled up to 5V and 3.3V respectively. In case 2, 0V was applied to pin 1A, and it was observed that pin 1B was pulled down to ~0V. For case 3, 0V was applied to pin 1B, and it was observed that 1A was pulled down to ~0V. We expect similar behavior from channel 2 corresponding to pins 2A and 2B.
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