sn74avc4t774 Dir change response

INg

I would like to check if there are any data on the propogation delay on the DIR pin before we can change the direction of the A and B port?

Ivan

over 8 years ago

0 Jared Becker over 8 years ago

TI__Genius 11505 points

Hello Ivan,

The appropriate applications engineer has been notified of your question and will respond as soon as possible.

Regards,

Jared

0 INg over 8 years ago in reply to Jared Becker

Genius 3475 points

HI Jared

Could you check if there is any feedback yet?

Ivan

0 Jared Becker over 8 years ago

TI__Genius 11505 points

Hello Ivan,

So sorry for the delay. After reveiwing the characterization data, there is no data on the propagation delay from the DIR pin to the change in direction of the A and B port.

I apologize for this inconveniece. Is there any other information I can help provide you with?

Regards,

Jared

0 fhoude over 8 years ago in reply to Jared Becker

TI__Genius 17225 points

Hello Ivan,

We do not currently spec the delay for DIR pin but there is a rule of thumb that the minimum time needed is the minimum pulse width that is derived from the data rate. Per the datasheet we see that for VCCA=1.8V and VCCB=3.3V we have a typical data rate of 380 Mbps, thus we take the inverse to get the minimum pulse width which gives: ~2.63nS. Let me know if this is not clear or if you have any other questions.

Logic

Logic forum

sn74avc4t774 Dir change response