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| HC1S25 Datasheet, PDF (34/110 Pages) Altera Corporation – HardCopy Stratix Device Family | |||
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Recommended Operating Conditions
Table 4â20. SSTL-2 Class II Specifications (Part 2 of 2)
Symbol
Parameter
Conditions
VR EF
VI H(DC )
VI L(D C)
VI H(AC )
VI L(A C)
VOH
VOL
Reference voltage
High-level DC input
voltage
Low-level DC input
voltage
High-level AC input
voltage
Low-level AC input
voltage
High-level output voltage IOH = â16.4 mA (1)
Low-level output voltage IOL = 16.4 mA (1)
Minimum
1.15
VREF + 0.18
â0.3
VREF + 0.35
VTT + 0.76
Typical
1.25
Maximum Unit
1.35
V
VCCIO + 0.3 V
VREF â 0.18 V
V
VREF â 0.35 V
V
VTT â 0.76 V
Table 4â21. SSTL-3 Class I Specifications
Symbol
Parameter
Conditions
VC CIO
VTT
VR EF
VI H(DC )
Output supply voltage
Termination voltage
Reference voltage
High-level DC input
voltage
VI L(D C)
Low-level DC input
voltage
VI H(AC )
VI L(A C)
VOH
VOL
High-level AC input
voltage
Low-level AC input
voltage
High-level output voltage IOH = â8 mA (1)
Low-level output voltage IOL = 8 mA (1)
Minimum
3.0
VREF â 0.05
1.3
VREF + 0.2
â0.3
VREF + 0.4
VTT + 0.6
Typical
3.3
VREF
1.5
Maximum Unit
3.6
V
VREF + 0.05 V
1.7
V
VCCIO + 0.3 V
VREF â 0.2 V
V
VREF â 0.4 V
V
VTT â 0.6 V
Table 4â22. SSTL-3 Class II Specifications (Part 1 of 2)
Symbol
Parameter
VC CIO
VTT
VR EF
Output supply voltage
Termination voltage
Reference voltage
Conditions
Minimum
3.0
VREF â 0.05
1.3
Typical
3.3
VREF
1.5
Maximum Unit
3.6
V
VREF + 0.05 V
1.7
V
4â10
Altera Corporation
September 2008
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