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參數(shù)資料
| 型號： | PNX8526 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Programmable source decoder with integrated peripherals |
| 中文描述： | 可編程集成外設(shè)源解碼器 |
| 文件頁數(shù)： | 41/59頁 |
| 文件大?。?/td> | 3319K |
| 代理商： | PNX8526 |
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Philips Semiconductors
PNX8526
Programmable Source Decoder with Integrated Peripherals
Preliminary data
Rev. 01 – 6 October 2003
41 of 59
9397 750 11715
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
9.2 Power off sequence
Power may be removed from V
DD
3.3 V and V
DD
1.26 V at the same time
Otherwise remove V
DD
3.3 V followed by 1.26 V
10. Limiting values
11. Thermal characteristics
PNX8526 can be used in different environments creating different junction
temperatures.
The thermal resistance from junction to ambient (i.e.
θ
ja) of the PNX8526 in its
HBGA456 package is around 11.7 C/W. This value is acheived using natural
convection, no external heatsink and using a JEDEC defined high-conductive board
(see JEDEC standards 51-2 and 51-7 for details).
Given the power dissipation of the PNX8526 and the ambient temperature inside the
enclosure, the expected junction temperature can be calculated using the following
equation:
In some applications the junction temperature may be judged too high, reducing the
acceptable lifetime (see
Section 15
). However cooling can be improved by fitting an
additional external heatsink, or increasing the airflow around the device.
Table 20
shows the improvements that can be expected if these measures are taken.
Table 19:
Symbol
T
amb
T
stg
T
j
Maximum ratings
Parameter
Ambient temperature
Storage temperature
Junction temperature
3-volt I/O pin voltage with respect to V
SS
5-volt tolerant I/O pin voltage with respect to
V
SS
I/O with Non-Schmitt trigger input voltage
threshold
I/O with Schmitt trigger input threshold VILT
I/O with Schmitt trigger input threshold VIHT
I/O transient pin voltage
DC supply voltage (V
DD
I/O pad)
DC supply voltage (V
DDC
core logic)
Dynamic Power Dissipation
Static Power Dissipation (AICP off)
Electrostatic Discharge (Human Body Model)
Min
0
-40
-
-0.5
-0.5
Max
70
+125
100
V
DD
+0.5 -
5.5
Typical
-
-
-
Unit
°C
°C
°C
V
V
-
1.46
1.76
-
V
0.93
1.66
-
3.0
1.20
-
-
-
1.06
1.79
10
3.6
1.32
2
1
± 1.5
-
-
-
-
-
-
-
-
V
V
V
V
V
W
W
kV
T
j
= T
amb
+ P x R
th(j-a)
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