PM5381-BI PMC-Sierra, Inc., PM5381-BI Datasheet - Page 584

• Manufacturer Part Number: PM5381-BI
• Description: ATM UNI, Single Channel ATM PHY Interface for 2488.32Mbps
• Manufacturer: PMC-Sierra, Inc.

20
This product is designed to operate over a wide temperature range when used with a heat sink and is
suited for outside plant equipment
Maximum long-term operating junction temperature (T
term life.
Maximum junction temperature (T
continued functional performance
local ambient temperature reaches 85°C.
Minimum ambient temperature (T
Junction-to-Case Thermal Resistance, q
Junction-to-Board Thermal Resistance, q
q
1.
2.
3.
4.
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2000489, Issue 4
SA
+q
The minimum ambient temperature requirement for Outside Plant Equipment meets the minimum ambient
temperature requirement for Industrial Equipment
Short-term is used as defined in Telcordia Technologies Generic Requirements GR-63-Core Core
q
board thermal resistance, is obtained by simulating conditions described in JEDEC Standard JESD 51-8
q
material. The maximum q
components in place
CS
JC
SA
, the junction-to-case thermal resistance, is a measured nominal value plus two sigma. q
4
is the thermal resistance of the heat sink to ambient. q
Thermal Information
Table 44 Outside Plant Thermal Information
Table 45 Device Compact Model
Table 46 Heat Sink Requirements
Power depends upon the operating mode. To obtain power information, refer to ‘High’ power
values in Section 16 Power Information.
Notes
The sum of q
where:
T
location
P
q
SA
A
D
is the ambient temperature at the heat sink
is the operating power dissipated in the package
and q
[(105 - T
CS
are required for long-term operation
SA
+ q
A
SA
) / P
CS
required for the airspeed at the location of the device in the system with all
2
A
J
. This condition will typically be reached when the
must be less than or equal to:
)
) for short-term excursions with guaranteed
D
] - q
1
.
JC
JC
JB
] °C/W
0.4°C/W
6.1°C/W
3
J
) to ensure adequate long-
CS
is the thermal resistance of the heat sink attached
S/UNI-2488 Telecom Standard Product Datasheet
105°C
125°C
-40°C
JB
, the junction-to-
Released
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