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DAC53608: slave I2C behavior (SDA sink current at V_OL; response to STA followed by immediate STP)

Part Number: DAC53608

DAC53608 I2C slave interface

(1) Looking for maximum sink current for SDA that can still achieve V_OL of 0.5V (or any output low voltage between 0.4V and 0.8V). Specifically, need to know whether SDA can still achieve output low voltage <0.5V if the pull-up resistor value on SDA is 1kohm (or even 0.8kohm), connected to to VDD=3.3V.  Datasheet does not have this information. 

(2) Also need confirmation from FAE whether slave I2C interface is robust against short (~10us to ~80us) duration dip on SDA pin from a voltage equal to VDD to a voltage of approximately 1.5V (still above V_IL, but below V_IH) due to glitch from another slave device on the I2C bus. Short dip could nominally be interpreted as a STA condition followed by an immediate STP condition.  Need to know if DAC53608 is robust against such an anomalous STA followed immediately by STP.  Preliminary testing indicates I2C slave interface is robust against such glitches (at one temperature and VDD condition), but I expect this question can quickly be answered by simulation of the slave I2C IP.