S3043 AMCC (Applied Micro Circuits Corp), S3043 Datasheet - Page 9

• Manufacturer Part Number: S3043
• Description: Bicmos Lvpecl Clock Generator Sonet/sdh/atm Oc-12 Transmitter And Sonet/sdh/atm Oc-48 16:1 Transmitter
• Manufacturer: AMCC (Applied Micro Circuits Corp)

SONET/SDH/ATM OC-48 1:16 RECEIVER
S3044
Figure 6. 80 PQFP/TEP Package
BOTTOM VIEW
TOP VIEW
Note: The S3044 package is equipped with an embedded conductive heatsink on the bottom (board side). Active circuitry
and vias should not appear in the area immediately under the package. This heatsink is electrically biased to the Vee
potential of the S3044. For optimum thermal management, a foil surface at ground (or Vee if other than ground) is
recommended immediately under the package, and connected with multiple vias to the internal plane(s) of similar potential.
Thermally conductive epoxy or other conductive interposer can be used to establish a good thermal dissipation path.
Table 5. Thermal Management
jc
ja
Device
Max Package Power
S3044
1.25 W
2.1˚C/W
26˚C/W
November 22, 1999 / Revision F
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