Operating Conditions
Output Drive Characteristics
Figure 5–1 shows the typical drive strength characteristics of MAX II
devices.
Figure 5–1. Output Drive Characteristics of MAX II Devices
MAX II Output Drive IOH Characteristics
MAX II Output Drive IOL Characteristics
(Maximum Drive Strength)
(Maximum Drive Strength)
60
50
40
30
20
10
0
70
3.3-V VCCIO
3.3-V VCCIO
60
50
2.5-V VCCIO
2.5-V VCCIO
40
30
1.8-V VCCIO
1.5-V VCCIO
1.8-V VCCIO
20
1.5-V VCCIO
10
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Voltage (V)
Voltage (V)
MAX II Output Drive IOL Characteristics
(Minimum Drive Strength)
MAX II Output Drive IOH Characteristics
(Minimum Drive Strength)
30
25
20
15
10
5
35
3.3-V VCCIO
3.3-V VCCIO
30
25
20
15
10
5
2.5-V VCCIO
2.5-V VCCIO
1.8-V VCCIO
1.8-V VCCIO
1.5-V VCCIO
1.5-V VCCIO
0
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Voltage (V)
Voltage (V)
I/O Standard Specifications
Tables 5–5 through 5–10 show the MAX II device family I/O standard
specifications.
Table 5–5. 3.3-V LVTTL Specifications (Part 1 of 2)
Symbol
Parameter
I/O supply voltage
Conditions
Minimum
3.0
Maximum
3.6
Unit
V
VCCIO
—
—
—
VIH
VIL
High-level input voltage
Low-level input voltage
1.7
4.0
V
–0.5
0.8
V
5–6Core Version a.b.c variable
MAX II Device Handbook, Volume 1
Altera Corporation
July 2008
ALTERA [ ALTERA CORPORATION ]
