Operating Conditions
Table 4–10. 3.3-V PCI Specifications
Symbol
Parameter
Conditions
Minimum Typical Maximum
Unit
V
VCCIO
Output supply voltage
High-level input voltage
3.0
3.3
3.6
VIH
0.5 ×
VCCIO
VCCIO
0.5
+
V
VIL
Low-level input voltage
High-level output voltage
Low-level output voltage
–0.5
0.3 ×
VCCIO
V
V
V
VOH
VOL
IOUT = –500 μA
IOUT = 1,500 μA
0.9 ×
VCCIO
0.1 ×
VCCIO
Table 4–11. SSTL-2 Class I Specifications
Symbol
Parameter
Conditions
Minimum
2.375
Typical
2.5
Maximum
2.625
Unit
V
VCCIO
Output supply voltage
Termination voltage
Reference voltage
VTT
VREF
VIH
VREF – 0.04
1.15
VREF
1.25
VREF + 0.04
1.35
V
V
High-level input voltage
Low-level input voltage
High-level output voltage
VREF + 0.18
–0.3
3.0
V
VIL
VREF – 0.18
V
VOH
IOH = –8.1 mA
VTT + 0.57
V
(11)
VOL
Low-level output voltage
IOL = 8.1 mA (11)
VTT – 0.57
V
Table 4–12. SSTL-2 Class II Specifications
Symbol
Parameter
Conditions
Minimum
2.3
Typical
2.5
Maximum
2.7
Unit
V
VCCIO
Output supply voltage
Termination voltage
Reference voltage
VTT
VREF
VIH
VREF – 0.04
1.15
VREF
1.25
VREF + 0.04
1.35
V
V
High-level input voltage
Low-level input voltage
High-level output voltage
VREF + 0.18
–0.3
VCCIO + 0.3
VREF – 0.18
V
VIL
V
VOH
IOH = –16.4 mA
VTT + 0.76
V
(11)
VOL
Low-level output voltage
IOL = 16.4 mA
VTT – 0.76
V
(11)
Altera Corporation
January 2007
4–5
Preliminary
ALTERA [ ALTERA CORPORATION ]
