EP2SGX30C Datasheet, PDF (220/314 Pages) Altera Corporation – Stratix II GX Device

Operating Conditions
Table 4–36. SSTL-18 Class II Specifications
Symbol
Parameter
Conditions
Minimum
V_CCIO Output supply voltage
V_REF Reference voltage
V_TT
Termination voltage
V_IH (DC) High-level DC input voltage
V_IL (DC) Low-level DC input voltage
V_IH (AC) High-level AC input voltage
V_IL (AC) Low-level AC input voltage
V_OH
High-level output voltage
V_OL
Low-level output voltage
I_OH = –13.4 mA (1)
I_OL = 13.4 mA (1)
1.71
0.855
V_REF – 0.04
V_REF + 0.125
V_REF + 0.25
V_CCIO – 0.28
Typical
1.8
0.9
V_REF
Maximum Unit
1.89
V
0.945
V
V_REF + 0.04 V
V
V_REF – 0.125 V
V
V_REF – 0.25 V
V
0.28
V
Note to Table 4–36:
(1) This specification is supported across all the programmable drive settings available for this I/O standard as shown
in the Stratix II GX Architecture chapter in volume 1 of the Stratix II GX Device Handbook.
Table 4–37. SSTL-18 Class I and II Differential Specifications
Symbol
Parameter
Conditions Minimum
Typical
Maximum Unit
V_CCIO
V_SWING
(DC)
V_X (AC)
V_SWING
(AC)
V_ISO
ΔV_ISO
V_OX (AC)
Output supply voltage
DC differential input voltage
AC differential input cross
point voltage
AC differential input voltage
Input clock signal offset
voltage
Input clock signal offset
voltage variation
AC differential cross point
voltage
1.71
1.8
1.89
V
0.25
V
(V_CCIO/2) – 0.175
0.5
(V_CCIO/2) + 0.175 V
V
0.5 V_CCIO
V
200
mV
(V_CCIO/2) – 0.125
(V_CCIO/2) + 0.125 V
4–50
Stratix II GX Device Handbook, Volume 1
Altera Corporation
October 2007