DC & Switching Characteristics
Table 4–28. 1.8-V HSTL Class I Specifications
Symbol
Parameter
Conditions
Minimum
1.65
Typical
1.80
Maximum
1.95
Unit
V
VCCIO
Output supply voltage
Input reference voltage
Termination voltage
VREF
VTT
0.70
0.90
0.95
V
VCCIO
0.5
×
V
VIH (DC)
DC high-level input voltage
DC low-level input voltage
AC high-level input voltage
AC low-level input voltage
High-level output voltage
Low-level output voltage
VREF + 0.1
–0.5
V
V
V
V
V
V
V
V
V
IL (DC)
IH (AC)
IL (AC)
VREF – 0.1
VREF – 0.2
0.4
VREF + 0.2
VOH
VOL
IOH = –8 mA (3)
IOL = 8 mA (3)
VCCIO – 0.4
Table 4–29. 1.8-V HSTL Class II Specifications
Symbol
Parameter
Conditions
Minimum
1.65
Typical
1.80
Maximum
1.95
Unit
V
VCCIO
Output supply voltage
Input reference voltage
Termination voltage
VREF
VTT
0.70
0.90
0.95
V
VCCIO
0.5
×
V
VIH (DC)
DC high-level input voltage
DC low-level input voltage
AC high-level input voltage
AC low-level input voltage
High-level output voltage
Low-level output voltage
VREF + 0.1
–0.5
V
V
V
V
V
V
V
V
V
IL (DC)
IH (AC)
IL (AC)
VREF – 0.1
VREF – 0.2
0.4
VREF + 0.2
VOH
VOL
IOH = –16 mA (3) VCCIO – 0.4
IOL = 16 mA (3)
Table 4–30. 1.5-V Differential HSTL Class I & Class II Specifications
Symbol
Parameter
Conditions
Minimum
1.4
Typical
Maximum
Unit
V
VCCIO
I/O supply voltage
1.5
1.6
V
V
V
DIF (DC)
CM (DC)
DIF (AC)
DC input differential
voltage
0.2
V
DC common mode input
voltage
0.68
0.4
0.9
V
V
AC differential input
voltage
Altera Corporation
January 2006
4–15
Stratix Device Handbook, Volume 1
ALTERA [ ALTERA CORPORATION ]
