DO-CPLD-DK-J-G Xilinx Inc, DO-CPLD-DK-J-G Datasheet - Page 15

• Manufacturer Part Number: DO-CPLD-DK-J-G
• Description: KIT STARTER CPLD JAPANESE
• Manufacturer: Xilinx Inc
• Series: CoolRunner™- IIr
• Type: CPLD Development Kitr

Specifications of DO-CPLD-DK-J-G

• Contents: Proto Board, Download Cable, Software and Documentation
• For Use With/related Products: CoolRunner-ll, XC9500XL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

CPLD I/O User Guide
UG445 (v1.1) November 27, 2007
R
Maximum I/O Power Dissipation
From the curve (see
will be 2.8V, which is above the Vohmin requirement for both the LVCMOS33 and LVTTL
standards.
The user must ensure that the Vohmin requirement meets the Vihmin of the downstream
device.
As an example, you might want to know how to calculate the maximum number of I/Os
one device can sink or source before damaging the device.
In this example, you will calculate how many I/Os one device can sink or source current
before you violate the acceptable Ta range. If you want to keep the device within the
recommended limits to prevent long-term reliability implications, adjust the TjMax so that
it is equal to the maximum Ta for the temperature grade you are using (i.e., Commercial =
70°C, Industrial = 85°C). This will ensure that the 20-year data retention limit is preserved,
as well as guarantee the specified timing delays in the data sheet.
If you sink or source lots of current with one device, you risk heating it so much that it is
destroyed. So, you need to know the maximum permissible temperature of the package. If
you want to perform the calculations to see how much current will be sourced or sunk
before the device is compromised, adjust the Tjmax in the calculation to the Tjmax of the
package (i.e., Tjmax = 125°C for a plastic package).
Figure
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3), you can see that when you drive 24 mA, the nominal output
Figure 3: I/V Curve Example 3
UG445_09_101007
Thresholds
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