Cyclone Device Handbook, Volume 1
Table 4–7. 1.8-V I/O Specifications
Symbol
Parameter
Output supply voltage
High-level input voltage
Low-level input voltage
High-level output voltage
Low-level output voltage
Conditions
Minimum
1.65
Maximum
1.95
Unit
V
VCCIO
VIH
VIL
0.65 × VCCIO
–0.3
2.25 (12)
0.35 × VCCIO
V
V
VOH
VOL
IOH = –2 to –8 mA (11) VCCIO – 0.45
IOL = 2 to 8 mA (11)
V
0.45
V
Table 4–8. 1.5-V I/O Specifications
Symbol
Parameter
Output supply voltage
High-level input voltage
Conditions
Minimum
Maximum
Unit
V
VCCIO
1.4
1.6
VIH
0.65 × VCCIO VCCIO + 0.3
V
(12)
VIL
Low-level input voltage
High-level output voltage
Low-level output voltage
–0.3
0.35 × VCCIO
V
V
V
VOH
VOL
IOH = –2 mA (11)
IOL = 2 mA (11)
0.75 × VCCIO
0.25 × VCCIO
Table 4–9. 2.5-V LVDS I/O Specifications
Note (13)
Symbol
Parameter
Conditions
Minimum Typical Maximum
Unit
V
VCCIO
I/O supply voltage
2.375
250
2.5
2.625
550
50
VOD
Differential output voltage RL = 100 Ω
mV
mV
Δ VOD
Change in VOD between
high and low
RL = 100 Ω
VOS
Output offset voltage
RL = 100 Ω
RL = 100 Ω
1.125
1.25
1.375
50
V
Δ VOS
Change in VOS between
high and low
mV
VTH
VIN
Differential input threshold VCM = 1.2 V
–100
0.0
100
2.4
mV
V
Receiver input voltage
range
RL
Receiver differential input
resistor
90
100
110
Ω
4–4
Preliminary
Altera Corporation
January 2007
ALTERA [ ALTERA CORPORATION ]
