Altera Corporation
6–21
June 2006
Stratix GX Device Handbook, Volume 1
DC & Switching Characteristics
VOH
High-level output voltage
VCCIO – 0.4
V
VOL
Low-level output voltage
0.4
V
Table 6–30. 1.5-V HSTL Class II Specifications
Symbol
Parameter
Conditions
Minimum
Typical
Maximum
Units
VCCIO
Output supply voltage
1.4
1.5
1.6
V
VREF
Input reference voltage
0.68
0.75
0.9
V
VTT
Termination voltage
0.7
0.75
0.8
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
Table 6–31. 1.5-V Differential HSTL Specifications
Symbol
Parameter
Conditions
Minimum
Typical
Maximum
Units
VCCIO
I/O supply voltage
1.4
1.5
1.6
V
VDIF (DC)
DC input differential
voltage
0.2
V
VCM (DC)
DC common mode input
voltage
0.68
0.9
V
VDIF (AC)
AC differential input
voltage
0.4
V
Table 6–32. CTT I/O Specifications (Part 1 of 2)
Symbol
Parameter
Conditions
Minimum
Typical
Maximum
Units
VCCIO
Output supply voltage
3.0
3.3
3.6
V
VTT /VREF
Termination and input
reference voltage
1.35
1.5
1.65
V
VIH
High-level input voltage
VREF + 0.2
V
VIL
Low-level input voltage
VREF – 0.2
V
Table 6–29. 1.5-V HSTL Class I Specifications (Part 2 of 2)
Symbol
Parameter
Conditions
Minimum
Typical
Maximum
Units