HC20K400 Datasheet, PDF (27/36 Pages) Altera Corporation – HardCopy APEX Device Family

Recommended Operating Conditions
Table 10–11. 3.3-V LVDS I/O Specifications (Part 2 of 2)
Symbol
V_OS
V_TH
V_IN
R_L
Parameter
Conditions
Change in VOS
between high and
low
R_L = 100 Ω
Differential input
threshold
Receiver input
voltage range
Receiver differential
input resistor
(external to
APEX 20K devices)
V_CM = 1.2 V
Minimum
–100
0.0
90
Typical
100
Maximum
50
100
2.4
110
Units
mV
mV
V
Ω
Table 10–12. GTL+ I/O Specifications
Symbol
Parameter
Conditions
V_TT
V_{R EF}
V_IH
V_IL
V_OL
Termination voltage
Reference voltage
High-level input
voltage
Low-level input
voltage
Low-level output
voltage
I_OL = 36 mA (2)
Minimum Typical Maximum Units
1.35
1.5
1.65
V
0.88
1.0
1.12
V
V_REF + 0.1
V
V_REF – 0.1
V
0.65
V
Table 10–13. SSTL-2 Class I Specifications (Part 1 of 2)
Symbol
V_{C CIO}
V_TT
V_{R EF}
V_IH
V_IL
Parameter
I/O supply voltage
Termination voltage
Reference voltage
High-level input
voltage
Low-level input
voltage
Conditions
Minimum
2.375
V_REF – 0.04
1.15
V_REF + 0.18
Typical
2.5
V_REF
1.25
Maximum
2.625
V_REF + 0.04
1.35
V_CCIO + 0.3
Units
V
V
V
V
–0.3
V_REF – 0.18
V
Altera Corporation
September 2008
10–7