Is your right side 3-dimension fig47 of page18 the view from bottom?
On the left side fig show the index pin.
If it is index pin #8, then the right side fig become the view from the top I think...
Thanks , Kaos
Shown on right side of Figure 47 of AD549 datasheet is the bottom view of the amplifier. Below is the outline dimensions for AD744 and you can take this as reference, it has the same package as AD549.