HC1S25 Datasheet, PDF (32/110 Pages) Altera Corporation – HardCopy Stratix Device Family

Recommended Operating Conditions
Table 4–15. GTL+ I/O Specifications
Symbol
Parameter
Conditions
V_TT
V_{R EF}
V_IH
V_IL
Termination voltage
Reference voltage
High-level input voltage
Low-level input voltage
V_OL
Low-level output voltage I_OL = 34 mA (1)
Minimum
1.35
0.88
V_REF + 0.1
Typical
1.5
1.0
Maximum Unit
1.65
V
1.12
V
V
V_REF – 0.1 V
0.65
V
Table 4–16. GTL I/O Specifications
Symbol
Parameter
Conditions
V_TT
V_{R EF}
V_IH
V_IL
Termination voltage
Reference voltage
High-level input voltage
Low-level input voltage
V_OL
Low-level output voltage I_OL = 40 mA (1)
Minimum
1.14
0.74
V_REF + 0.05
Typical
1.2
0.8
Maximum Unit
1.26
V
0.86
V
V
V_REF – 0.05 V
0.4
V
Table 4–17. SSTL-18 Class I Specifications
Symbol
Parameter
Conditions
V_{C CIO}
V_{R EF}
V_TT
V_{I H(DC )}
Output supply voltage
Reference voltage
Termination voltage
High-level DC input
voltage
V_{I L(D C)}
Low-level DC input
voltage
V_{I H(AC )}
High-level AC input
voltage
V_{I L(A C)}
Low-level AC input
voltage
V_OH
High-level output voltage I_OH = –6.7 mA (1)
V_OL
Low-level output voltage I_OL = 6.7 mA (1)
Minimum
1.65
0.8
V_REF – 0.04
V_REF + 0.125
Typical
1.8
0.9
V_REF
Maximum Unit
1.95
V
1.0
V
V_REF + 0.04 V
V
V_REF – 0.125 V
V_REF + 0.275
V
V_REF – 0.275 V
V_TT + 0.475
V
V_TT – 0.475 V
4–8
Altera Corporation
September 2008