Altera Corporation
4–53
June 2009
Stratix II GX Device Handbook, Volume 1
DC and Switching Characteristics
VOH
High-level output voltage
IOH = 8 mA
VREF + 0.15
VCCIO + 0.15
V
VOL
Low-level output voltage
IOH = –8 mA
–0.15
VREF – 0.15
V
Table 4–42. 1.5-V HSTL Class I Specifications
Symbol
Parameter
Conditions
Minimum
Typical
Unit
VCCIO
Output supply voltage
1.425
1.5
1.575
V
VREF
Input reference voltage
0.713
0.75
0.788
V
VTT
Termination voltage
0.713
0.75
0.788
V
VIH (DC)
DC high-level input voltage
VREF + 0.1
V
VIL (DC)
DC low-level input voltage
–0.3
VREF – 0.1
V
VIH (AC)
AC high-level input voltage
VREF + 0.2
V
VIL (AC)
AC low-level input voltage
VREF – 0.2
V
VOH
High-level output voltage
VCCIO – 0.4
V
VOL
Low-level output voltage
0.4
V
(1)
This specification is supported across all the programmable drive settings available for this I/O standard as shown
Table 4–43. 1.5-V HSTL Class II Specifications
Symbol
Parameter
Conditions
Minimum
Typical
Maximum
Unit
VCCIO
Output supply voltage
1.425
1.50
1.575
V
VREF
Input reference voltage
0.713
0.75
0.788
V
VTT
Termination voltage
0.713
0.75
0.788
V
VIH (DC)
DC high-level input voltage
VREF + 0.1
V
VIL (DC)
DC low-level input voltage
–0.3
VREF – 0.1
V
VIH (AC)
AC high-level input voltage
VREF + 0.2
V
VIL (AC)
AC low-level input voltage
VREF – 0.2
V
VOH
High-level output voltage
VCCIO – 0.4
V
VOL
Low-level output voltage
0.4
V
(1)
This specification is supported across all the programmable drive settings available for this I/O standard as shown
Table 4–41. 1.2-V HSTL Specifications
Symbol
Parameter
Conditions
Minimum
Typical
Maximum
Unit