Other Parts Discussed in Thread: TXS0108E,
Hi
The application is audio I2S signal voltage conversion (VDD_CLK=3.3V and 1.8V):
Initial version: Using TXS0108E, which is compatible with Open Drain and Push-Pull, the function passed the test, but the driving capability of the instrument was weak.
Updated version: Using TXB0104, there are two problems:
(1) When switching to the TXB series, using two 4-bit ICs, Push-Pull connection to I2S signal; when connected to the test instrument, the audio is abnormal, and the SDATAO_ASRC of the oscilloscope probe will pass, and the I2S data pin 1.8V is converted to 3.3V;
However, when testing with TXS0108E, the above problem does not occur.
(2) When VDD_CLK=1.8V, some ICs can be used with 1.8V. It is not clear whether there is a problem with Automatic Direction Sensing. The oscilloscope can measure the signal, but the audio output is abnormal. When the IC is removed, the four signals at both ends are short-circuited and there is no problem.
