SN74AXC4T245: Transition Time of SN74AXC4T245 to Switch from one direction to another

Yazhu Liu

Part Number: SN74AXC4T245

Hi Team,

SN74AXC4T245 is a direction-controlled device, do we have the test data of the transition time for SN74AXC4T245 to switch from one direction to another? Which is, the settling time of the output when the direction of SN74AXC4T245 is changed from "A to B" to "B to A" controlled by "DIR" pin. Could you please give some comments on that?

Best Regards,

Livia Liu

over 6 years ago

0 Clemens Ladisch over 6 years ago

Guru 317480 points

As shown in the functional block diagram, changing DIR is the same as disabling one side and enabling the other side at the same time.

So the direction switching time is the maximum of t_dis and t_en.

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SN74AXC4T245: Transition Time of SN74AXC4T245 to Switch from one direction to another