level converter wrong ?

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xd hi everyone...glad meet again...

i've got trouble shift level devices wired: :smiley-zipper:

when use i2c rtc ds1307 , ok connect gyro mpu6050 , datas on sda / scl wrong on rtc ds1307..
(it's first test lev_convert ...)
here's schem..:
http://ieee.free.fr/ardui/level.jpg

if ever meet pb...
thank u.. :smiley-mr-green:

what level shift device?  is bidirectional?  i2c doesn't need level
conversion open-drain.


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