Altera Cyclone IV - Page 459

Chapter 1: Cyclone IV Device Datasheet 1–13
Operating Conditions
December 2016 Altera Corporation Cyclone IV Device Handbook,
Volume 3
Table 1–16. Single-Ended SSTL and HSTL I/O Reference Voltage Specifications for Cyclone IV Devices
(1)
I/O
Standard
V
CCIO
(V) V
REF
(V) V
TT
(V)
(2)
Min Typ Max Min Typ Max Min Typ Max
SSTL
-2
Class I, II
2.375 2.5 2.625 1.19 1.25 1.31
V
REF
–
0.04
V
REF
V
REF
+
0.04
SSTL
-18
Class I, II
1.7 1.8 1.9 0.833 0.9 0.969
V
REF
–
0.04
V
REF
V
REF
+
0.04
HSTL
-18
Class I, II
1.71 1.8 1.89 0.85 0.9 0.95 0.85 0.9 0.95
HSTL
-15
Class I, II
1.425 1.5 1.575 0.71 0.75 0.79 0.71 0.75 0.79
HSTL
-12
Class I, II
1.14 1.2 1.26
0.48 x V
CCIO
(3)
0.5 x V
CCIO
(3)
0.52 x V
CCIO
(3)
—
0.5 x
V
CCIO
—
0.47 x V
CCIO
(4)
0.5 x V
CCIO
(4)
0.53 x V
CCIO
(4)
Notes to Table 1–16:
(1) For an explanation of terms used in Table 1–16, refer to “Glossary” on page 1–37.
(2) V
TT
of the transmitting device must track V
REF
of the receiving device.
(3) Value shown refers to DC input reference voltage, V
REF(DC)
.
(4) Value shown refers to AC input reference voltage, V
REF(AC)
.
Table 1–17. Single-Ended SSTL and HSTL I/O Standards Signal Specifications for Cyclone IV Devices
I/O
Standard
V
IL(DC)
(V) V
IH(DC)
(V) V
IL(AC)
(V) V
IH(AC)
(V) V
OL
(V) V
OH
(V)
I
OL
(mA)
I
OH
(mA)
Min Max Min Max Min Max Min Max Max Min
SSTL
-2
Class I
—
V
REF
–
0.18
V
REF
+
0.18
——
V
REF
–
0.35
V
REF
+
0.35
—
V
TT
–
0.57
V
TT
+
0.57
8.1 –8.1
SSTL
-2
Class II
—
V
REF
–
0.18
V
REF
+
0.18
——
V
REF
–
0.35
V
REF
+
0.35
—
V
TT
–
0.76
V
TT
+
0.76
16.4 –16.4
SSTL
-18
Class I
—
V
REF
–
0.125
V
REF
+
0.125
——
V
REF
–
0.25
V
REF
+
0.25
—
V
TT
–
0.475
V
TT
+
0.475
6.7 –6.7
SSTL
-18
Class II
—
V
REF
–
0.125
V
REF
+
0.125
——
V
REF
–
0.25
V
REF
+
0.25
—0.28
V
CCIO
–
0.28
13.4 –13.4
HSTL
-18
Class I
—
V
REF
–
0.1
V
REF
+
0.1
——
V
REF
–
0.2
V
REF
+
0.2
—0.4
V
CCIO
–
0.4
8–8
HSTL
-18
Class II
—
V
REF
–
0.1
V
REF
+
0.1
——
V
REF
–
0.2
V
REF
+
0.2
—0.4
V
CCIO
–
0.4
16 –16
HSTL
-15
Class I
—
V
REF
–
0.1
V
REF
+
0.1
——
V
REF
–
0.2
V
REF
+
0.2
—0.4
V
CCIO
–
0.4
8–8
HSTL
-15
Class II
—
V
REF
–
0.1
V
REF
+
0.1
——
V
REF
–
0.2
V
REF
+
0.2
—0.4
V
CCIO
–
0.4
16 –16
HSTL
-12
Class I
–0.15
V
REF
–
0.08
V
REF
+
0.08
V
CCIO
+ 0.15 –0.24
V
REF
–
0.15
V
REF
+
0.15
V
CCIO
+
0.24
0.25 ×
V
CCIO
0.75 ×
V
CCIO
8–8
HSTL
-12
Class II
–0.15
V
REF
–
0.08
V
REF
+
0.08
V
CCIO
+ 0.15 –0.24
V
REF
–
0.15
V
REF
+
0.15
V
CCIO
+
0.24
0.25 ×
V
CCIO
0.75 ×
V
CCIO
14 –14