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PC87427 датащи(PDF) 26 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
номер детали PC87427
подробное описание детали  ServerI/O with SensorPathTM Health Monitoring
PDF  46 Pages
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87427 датащи(HTML) 26 Page - National Semiconductor (TI)

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2.0 Device Characteristics (Continued)
www.national.com
26
Revision 1.0
2.4
PACKAGE THERMAL INFORMATION
Thermal resistance (degrees C/W) ThetaJC and ThetaJA values for the PC87427 package are as follows:
Table 4. Theta (
Θ) J Values
Note: Airflow for ThetaJA values is measured in linear feet per minute (lfpm).
2.5
AC ELECTRICAL CHARACTERISTICS
2.5.1
AC Test Conditions
Figure 3. AC Test Conditions, TA =0°Cto70°C, VSUP = 3.3V ±10%
Notes:
1. VSUP is VDD, VSB or VPP according to the pin power well.
1. CL = 50 pF for all output pins except the following pin groups:
CL = 100 pF for Serial Port 1, 2 and M (see Section 1.4.4 on page 10) and
Floppy Disk Controller (see Section 1.4.9) pins;
CL = 40 pF for HFCKOUT pin;
CL = 400 pF for SMBus pins (see Section 1.4.2 on page 9);
These values include both jig and oscilloscope capacitance.
2. S1 = Open for push-pull output pins.
S1 = VSUP for high impedance to active low and active low to high impedance transition measurements.
S1 = GND for high impedance to active high and active high to high impedance transition measurements.
RL = 1.0 KΩ for all the pins.
3. For the FDC open-drain interface pins, S1 = VDD and RL = 150 Ω.
Package Type
ThetaJA@0 lfpm ThetaJA@225 lfpm ThetaJA@500 lfpm
ThetaJC
128 PQFP
47
35.8
31.1
14.9
Device
Under
Test
0.1
µf
Input
Output
RL
CL
S1
Load Circuit
AC Testing Input, Output Waveform
VSUP
2.4
0.4
2.0
0.8
Test Points
2.0
0.8



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