P82B715: Verification on P82B715DR design

Poh Kok Keng

Part Number: P82B715

hi,

Please help to verify the P82B715DR design below, to buffer external long signal Lx, Ly (5V) to Sx, Sy (3.3V), for use on this board. We have multiple I2C end devices. Will this work?

Best regards,
Felix

over 3 years ago

0 Clemens Ladisch over 3 years ago

Guru 279750 points

The Lx/Ly pins are not stricly I²C compatible because they output stronger currents. Is there a P82B715 at the other end? Or do you want only level shifting?

0 Poh Kok Keng over 3 years ago in reply to Clemens Ladisch

Genius 5322 points

What I want is to make sure I2C signal can reach the end device at the longer distance. The other end do not have the other P82B715

0 Clemens Ladisch over 3 years ago in reply to Poh Kok Keng

Guru 279750 points

I²C is a bidirectional protocol. The devices at both ends must be able to drive the capacitance of the long bus. What is that other device?

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P82B715: Verification on P82B715DR design