pnx8526 NXP Semiconductors, pnx8526 Datasheet - Page 44

• Manufacturer Part Number: pnx8526
• Description: Programmable Source Decoder With Integrated Peripherals
• Manufacturer: NXP Semiconductors

Philips Semiconductors
12. Characteristics
9397 750 15101
Product data sheet
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
additional external heatsink, or increasing the airflow around the device.
the improvements that can be expected if these measures are taken.
Table 19:
Heatsink size = 37 mm
The characteristics listed in the following tables apply to standard operating conditions,
unless otherwise noted. All voltages are referenced to V
flows into the referenced pin. The standard operating voltage range is V
and V
In all cases described below, digital V
70 C.
All AC timings are based on a 30 pF test load and are measured at a 1.6 V threshold (see
Figure
Schmitt trigger input (see
The AC voltage characteristics for active signal pins of the controller are listed in
Signal names for the PCI bus configuration are listed, as well as the minimum and
maximum voltage, current, and capacitance for each pin.
Table 20:
V
T
PNX8526
Standard
With external heatsink 9.5
Symbol
V
V
V
Fig 4. General AC characteristics
DD
j
IL
IH
OL
=
= 3.3 V
T
DDC
4). Actual input/output voltage threshold is dependent on pad type, for example,
amb
Parameter
LOW-level input voltage
HIGH-level input voltage
LOW-level output voltage
= 1.26 V
+
PNX8526 thermal data
Digital AC/DC characteristics
P
5 %; T
R
th(j-a)
amb
0.06 V. All digital input/output pins are 3.3 V tolerant.
Thermal resistance R
Airflow
0 m/s
11.7
= 0 C to 70 C; unless otherwise specified.
37 mm
Rev. 02 — 11 July 2005
Section
Section
Programmable source decoder with integrated peripherials
2.4 V
1.6 V
0.8 V
10 mm.
13.2). However cooling can be improved by fitting an
6.1).
Conditions
DD
= 3.3 V
th(j-a)
1 m/s
10.0
7.6
(K/W)
[1]
5 % and ambient temperature is 0 C to
Min
2.4
0
0.5
SS
mce542
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
(0 V, ground). Positive current
Typ
-
-
-
2 m/s
8.5
6.3
PNX8526
DD
Max
+0.8
V
0.4
Table 19
DD
= 3.3 V
+ 0.5 V
Table
shows
Unit
V
V
44 of 65
0.3 V
20.
(1)