Device Architecture
2-176 Revision 4
The length of time an I/O can withstand IOSH/IOSL events depends on the junction temperature. The
reliability data below is based on a 3.3 V, 36 mA I/O setting, which is the worst case for this type of
analysis.
For example, at 100°C, the short current condition would have to be sustained for more than six months
to cause a reliability concern. The I/O design does not contain any short circuit protection, but such
protection would only be needed in extremely prolonged stress conditions.
2.5 V LVCMOS 2 mA 16 18
4 mA 16 18
6 mA 32 37
8 mA 32 37
12 mA 65 74
16 mA 83 87
24 mA 169 124
1.8 V LVCMOS 2 mA 9 11
4 mA 17 22
6 mA 35 44
8 mA 45 51
12 mA 91 74
16 mA 91 74
1.5 V LVCMOS 2 mA 13 16
4 mA 25 33
6 mA 32 39
8 mA 66 55
12 mA 66 55
3.3 V PCI/PCI-X Per PCI/PCI-X
specification
103 109
Applicable to Standard I/O Banks
3.3 V LVTTL / 3.3 V LVCMOS 2 mA 25 27
4 mA 25 27
6 mA 51 54
8 mA 51 54
2.5 V LVCMOS 2 mA 16 18
4 mA 16 18
6 mA 32 37
8 mA 32 37
1.8 V LVCMOS 2 mA 9 11
4 mA 17 22
1.5 V LVCMOS 2 mA 13 16
Table 2-98 • I/O Short Currents IOSH/IOSL (continued)
Drive Strength IOSH (mA)* IOSL (mA)*
Note: *T
J
= 100°C