Operating Conditions
Table 5–23. 1.5-V HSTL Class I Specifications
Symbol
VCCIO
VREF
Parameter
Conditions
Minimum
1.425
Typical
1.500
0.750
0.750
Maximum Unit
Output supply voltage
Input reference voltage
Termination voltage
1.575
0.788
0.788
V
V
V
V
V
V
V
V
V
0.713
VTT
0.713
V
V
V
V
IH (DC)
IL (DC)
IH (AC)
IL (AC)
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
–0.3
VREF – 0.1
VREF – 0.2
0.4
VREF + 0.2
VOH
VOL
IOH = 8 mA (1)
IOH = –8 mA (1)
VCCIO – 0.4
Note to Table 5–23:
(1) This specification is supported across all the programmable drive settings available for this I/O standard as shown
in the Stratix II Architecture chapter in volume 1 of the Stratix II Device Handbook.
Table 5–24. 1.5-V HSTL Class II Specifications
Symbol
VCCIO
VREF
Parameter
Conditions
Minimum
1.425
Typical
1.500
0.750
0.750
Maximum Unit
Output supply voltage
Input reference voltage
Termination voltage
1.575
0.788
0.788
V
V
V
V
V
V
V
V
V
0.713
VTT
0.713
V
V
V
V
IH (DC)
IL (DC)
IH (AC)
IL (AC)
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
–0.3
VREF – 0.1
VREF – 0.2
0.4
VREF + 0.2
VOH
VOL
IOH = 16 mA (1)
IOH = –16 mA (1)
VCCIO – 0.4
Note to Table 5–24:
(1) This specification is supported across all the programmable drive settings available for this I/O standard as shown
in the Stratix II Architecture chapter in volume 1 of the Stratix II Device Handbook.
5–14
Altera Corporation
May 2007
Stratix II Device Handbook, Volume 1
ALTERA [ ALTERA CORPORATION ]
