Operating Conditions
Table 4–4. LVTTL Specifications (Part 2 of 2)
Symbol
Parameter
High-level output voltage
Low-level output voltage
Conditions
Minimum
Maximum
Unit
V
VOH
VOL
IOH = –4 to –24 mA (11)
IOL = 4 to 24 mA (11)
2.4
0.45
V
Table 4–5. LVCMOS Specifications
Symbol
Parameter
Output supply voltage
High-level input voltage
Low-level input voltage
High-level output voltage
Conditions
Minimum
3.0
Maximum
3.6
Unit
V
VCCIO
VIH
VIL
1.7
4.1
V
–0.5
0.7
V
VOH
VCCIO = 3.0,
V
CCIO – 0.2
V
IOH = –0.1 mA
VOL
Low-level output voltage
VCCIO = 3.0,
IOL = 0.1 mA
0.2
V
Table 4–6. 2.5-V I/O Specifications
Symbol
Parameter
Output supply voltage
High-level input voltage
Low-level input voltage
High-level output voltage
Conditions
Minimum
2.375
1.7
Maximum
2.625
4.1
Unit
V
VCCIO
VIH
VIL
V
–0.5
2.1
0.7
V
VOH
IOH = –0.1 mA
V
I
I
OH = –1 mA
2.0
V
OH = –2 to –16 mA (11)
1.7
V
VOL
Low-level output voltage
IOL = 0.1 mA
0.2
0.4
0.7
V
I
I
OH = 1 mA
V
OH = 2 to 16 mA (11)
V
Altera Corporation
January 2007
4–3
Preliminary
ALTERA [ ALTERA CORPORATION ]
