DC and Switching Characteristics
Table 4–17. 2.5-V I/O Specifications
Symbol
VCCIO (1)
VIH
Parameter
Conditions
Minimum
2.375
1.7
Maximum
2.625
4.0
Unit
V
Output supply voltage
High-level input voltage
Low-level input voltage
High-level output voltage
Low-level output voltage
V
VIL
–0.3
0.7
V
VOH
IOH = –1 mA (2)
IOL = 1 mA (2)
2.0
V
VOL
0.4
V
Notes to Table 4–17:
(1) The Arria GX device VCCIO voltage level support of 2.5 to 5% is narrower than defined in the normal range of the
EIA/JEDEC standard.
(2) This specification is supported across all the programmable drive settings available for this I/O standard.
Table 4–18. 1.8-V I/O Specifications
Symbol
VCCIO (1)
VIH
Parameter
Output supply voltage
High-level input voltage
Low-level input voltage
High-level output voltage
Low-level output voltage
Conditions
Minimum
1.71
Maximum
1.89
Unit
V
0.65 × VCCIO
–0.3
2.25
V
VIL
0.35 × VCCIO
V
VOH
IOH = –2 mA (2)
IOL = 2 mA (2)
VCCIO – 0.45
V
VOL
0.45
V
Notes to Table 4–18:
(1) The Arria GX device VCCIO voltage level support of 1.8 to 5% is narrower than defined in the normal range of the
EIA/JEDEC standard.
(2) This specification is supported across all the programmable drive settings available for this I/O standard as shown
in Arria GX Architecture chapter in volume 1 of the Arria GX Device Handbook.
Altera Corporation
May 2008
4–21
Arria GX Device Handbook, Volume 1
ALTERA [ ALTERA CORPORATION ]
