參數(shù)資料
型號: 89TTM553BL
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 微控制器/微處理器
英文描述: Traffic Manager Co-processor
中文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PBGA960
封裝: 35 X 35 MM, 1 MM PITCH, FPBGA-960
文件頁數(shù): 13/30頁
文件大小: 185K
代理商: 89TTM553BL
13 of 30
March 3, 2005
IDT 89TTM553
AC Test Conditions
Figure 1 AC Test Load
89T T M553 T hermal Consideration
This section describes the temperature and heat sink calculations for flip-chip BGA devices.
The thermal circuit is as shown below
Figure 2 89TTM553 Thermal Circuit
Input Rise/Fall Time
1 V / ns (20% / 80%)
Output timng measurement reference level (V
REF
) for 3.3V interfaces
(VDDQ/2) V
Output load
As shown in Figure 1
Table 18 AC Test Conditions
S ymbol
Parameter
Value
Units
Conditions
JA
Thermal resistance, junction to ambient (no heat sink)
9.8
°C / W
Max: still air.
7.8
°C / W
Typical: 200 FPM
JB
Estimated thermal resistance, junction to board
3.1
°C / W
JC
Thermal resistance, junction to case
0.7
°C / W
Table 19 89TTM553 Thermal Characteristics
Z0 = 50
50
5 pF
V
REF
75
75
VDD
20 pF
For enable/disable spec
For output timing
JB
Total Power
= W
JC
CA
T
J
W2 (dissipated through board)
T
A
W1
T
A
Device
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