sn74lvc245 and sn74lvc4245

What's different between sn74lvc245 and sn74lvc4245?Thank you!

There are many differences between them.

For example: The voltage on A side and B side could be different for SN74LVC4245A. While the signals on both sides should be the same for sn74lvc245.

Datasheet for both device are available via internet. Please go through the documents for more details and select the one which perfectly meets your system reqirements.

Thanks.