Cyclone Device Handbook, Volume 1
Table 4–13. SSTL-3 Class I Specifications
Symbol
Parameter
Conditions
Minimum
3.0
Typical
3.3
Maximum
3.6
Unit
V
VCCIO
Output supply voltage
Termination voltage
VTT
VREF
VIH
VREF – 0.05
1.3
VREF
1.5
VREF + 0.05
1.7
V
Reference voltage
V
High-level input voltage
Low-level input voltage
High-level output voltage
Low-level output voltage
VREF + 0.2
–0.3
VCCIO + 0.3
VREF – 0.2
V
VIL
V
VOH
VOL
IOH = –8 mA (11)
IOL = 8 mA (11)
VTT + 0.6
V
VTT – 0.6
V
Table 4–14. SSTL-3 Class II Specifications
Symbol
Parameter
Conditions
Minimum
3.0
Typical
3.3
Maximum
3.6
Unit
V
VCCIO
Output supply voltage
Termination voltage
Reference voltage
VTT
VREF
VIH
VREF – 0.05
1.3
VREF
1.5
VREF + 0.05
1.7
V
V
High-level input voltage
Low-level input voltage
High-level output voltage
VREF + 0.2
–0.3
VCCIO + 0.3
VREF – 0.2
V
VIL
V
VOH
IOH = –16 mA
VTT + 0.8
V
(11)
VOL
Low-level output voltage
IOL = 16 mA (11)
VTT – 0.8
V
Table 4–15. Bus Hold Parameters
VCCIO Level
Parameter
Conditions
Unit
1.5 V
Min Max
1.8 V
Max
2.5 V
3.3 V
Min
Min
Max
Min
Max
Low sustaining VIN > VIL
current
30
50
70
μA
μA
μA
μA
(maximum)
High sustaining VIN < VIH
–30
–50
–70
current
(minimum)
Low overdrive
current
0 V < VIN
VCCIO
<
200
300
500
High overdrive 0 V < VIN
<
–200
–300
–500
current
VCCIO
4–6
Preliminary
Altera Corporation
January 2007
ALTERA [ ALTERA CORPORATION ]
