10–8 Altera Corporation
September 2008
HardCopy Series Handbook, Volume 1
V
OH
High-level output
voltage
I
OH
= –7.6 mA (1) V
TT
+ 0.57 V
V
OL
Low-level output
voltage
I
OL
= 7.6 mA (2) V
TT
0.57 V
Table 10–14. SSTL-2 Class II Specifications
Symbol Parameter Conditions Minimum Typical Maximum Units
V
CCIO
I/O supply voltage 2.375 2.5 2.625 V
V
TT
Termination voltage V
REF
0.04 V
REF
V
REF
+ 0.04 V
V
REF
Reference voltage 1.15 1.25 1.35 V
V
IH
High-level input
voltage
V
REF
+ 0.18 V
CCIO
+ 0.3 V
V
IL
Low-level input
voltage
–0.3 V
REF
0.18 V
V
OH
High-level output
voltage
I
OH
= –15.2 mA (1) V
TT
+ 0.76 V
V
OL
Low-level output
voltage
I
OL
= 15.2 mA (2) V
TT
0.76 V
Table 10–15. SSTL-3 Class I Specifications
Symbol Parameter Conditions Minimum Typical Maximum Units
V
CCIO
I/O supply voltage 3.0 3.3 3.6 V
V
TT
Termination voltage V
REF
0.05 V
REF
V
REF
+ 0.05 V
V
REF
Reference voltage 1.3 1.5 1.7 V
V
IH
High-level input
voltage
V
REF
+ 0.2 V
CCIO
+ 0.3 V
V
IL
Low-level input
voltage
–0.3 V
REF
0.2 V
V
OH
High-level output
voltage
I
OH
= –8 mA (1) V
TT
+ 0.6 V
V
OL
Low-level output
voltage
I
OL
= 8 mA (2) V
TT
– 0.6 V
Table 10–13. SSTL-2 Class I Specifications (Part 2 of 2)
Symbol Parameter Conditions Minimum Typical Maximum Units
Altera Corporation 10–9
September 2008
Recommended Operating Conditions
Table 10–16. SSTL-3 Class II Specifications
Symbol Parameter Conditions Minimum Typical Maximum Units
V
CCIO
I/O supply voltage 3.0 3.3 3.6 V
V
TT
Termination voltage V
REF
0.05 V
REF
V
REF
+ 0.05 V
V
REF
Reference voltage 1.3 1.5 1.7 V
V
IH
High-level input
voltage
V
REF
+ 0.2 V
CCIO
+ 0.3 V
V
IL
Low-level input
voltage
–0.3 V
REF
0.2 V
V
OH
High-level output
voltage
I
OH
= –16 mA (1) V
TT
+ 0.8 V
V
OL
Low-level output
voltage
I
OL
= 16 mA (2) V
TT
– 0.8 V
Table 10–17. HSTL Class I I/O Specifications
Symbol Parameter Conditions Minimum Typical Maximum Units
V
CCIO
I/O supply voltage 1.71 1.8 1.89 V
V
TT
Termination voltage V
REF
0.05 V
REF
V
REF
+ 0.05 V
V
REF
Reference voltage 0.68 0.75 0.90 V
V
IH
High-level input
voltage
V
REF
+ 0.1 V
CCIO
+ 0.3 V
V
IL
Low-level input
voltage
–0.3 V
REF
0.1 V
V
OH
High-level output
voltage
I
OH
= –8 mA (1) V
CCIO
0.4 V
V
OL
Low-level output
voltage
I
OL
= 8 mA (2) 0.4 V
Table 10–18. LVPECL Specifications (Part 1 of 2)
Symbol Parameter Minimum Typical Maximum Units
V
CCIO
Output Supply
Voltage
3.135 3.3 3.465 V
V
IH
Low-level input
voltage
1,300 1,700 mV
V
IL
High-level input
voltage
2,100 2,600 mV
V
OH
Low-level output
voltage
1,450 1,650 mV
10–10 Altera Corporation
September 2008
HardCopy Series Handbook, Volume 1
V
OL
High-level output
voltage
2,275 2,420 mV
V
ID
Input voltage
differential
400 600 950 mV
V
OD
Output voltage
differential
625 800 950 mV
t
r
, t
f
Rise and fall time
(20 to 80%)
85 325 ps
t
DSKEW
Differential skew 25 ps
t
O
Output load 150 Ω
R
L
Receiver differential
input resistor
100 Ω
Table 10–19. 3.3-V AGP I/O Specifications
Symbol Parameter Conditions Minimum Typical Maximum Units
V
CCIO
I/O supply voltage 3.15 3.3 3.45 V
V
REF
Reference voltage 0.39 × V
CCIO
0.41 × V
CCIO
V
V
IH
High-level input
voltage
0.5 × V
CCIO
V
CCIO
+ 0.5 V
V
IL
Low-level input
voltage
0.3 × V
CCIO
V
V
OH
High-level output
voltage
I
OUT
= –500 μA0.9 × V
CCIO
3.6 V
V
OL
Low-level output
voltage
I
OUT
= 1500 μA0.1 × V
CCIO
V
I
I
Input pin leakage
current
0 < V
IN
< V
CCIO
–10 10 μΑ
Table 10–20. CTT I/O Specifications (Part 1 of 2)
Symbol Parameter Conditions Minimum Typical Maximum Units
V
CCIO
I/O supply voltage 3.0 3.3 3.6 V
V
TT
/V
REF
(3) Termination and
reference voltage
1.35 1.5 1.65 V
V
IH
High-level input
voltage
V
REF
+ 0.2 V
Table 10–18. LVPECL Specifications (Part 2 of 2)
Symbol Parameter Minimum Typical Maximum Units

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