PCA9545A: tsdh I2C serial-data hold time consult

Stanley Dai

Part Number: PCA9545A

Hi Team,

Which the min value customer should look for about he tsdh spec? In our D/S, we recommend two values(one is 0ns, another one is 300ns). Thanks.

Best,

Stanley

over 3 years ago

0 Stanley Dai over 3 years ago

TI__Expert 5810 points

Hi Team,

Any response here? Thanks,

+1 BOBBY over 3 years ago

TI__Guru 73821 points

Stanley,

This comes from I2C standard, our I2C device isn't affected by this timing spec. The latest version of the spec still calls for 0 without a call out on a 300ns on SDA. It only requires that SCL falls below 30% of VCC before SDA enters the 30-70 or 70-30 range.

-Bobby

Interface

Interface forum

PCA9545A: tsdh I2C serial-data hold time consult