Chapter 1: Cyclone IV Device Datasheet
Operating Conditions
1–13
Max
Table 1–16. Single-Ended SSTL and HSTL I/O Reference Voltage Specifications for Cyclone IV Devices (1)
(2)
V
CCIO (V)
Typ
VREF (V)
Typ
VTT (V)
Typ
I/O
Standard
Min
Max
Min
Max
Min
SSTL-2
VREF
0.04
–
VREF
0.04
+
2.375 2.5 2.625
1.19
1.25
0.9
1.31
VREF
VREF
0.9
Class I, II
SSTL-18
Class I, II
VREF
0.04
–
VREF
0.04
+
1.7
1.8
1.8
1.9
0.833
0.85
0.71
0.969
0.95
0.79
HSTL-18
Class I, II
1.71
1.89
0.9
0.85
0.71
0.95
0.79
HSTL-15
Class I, II
1.425 1.5 1.575
0.75
0.75
(3)
(4)
(3)
(4)
(3)
(4)
0.48 x VCCIO
0.47 x VCCIO
0.5 x VCCIO
0.5 x VCCIO
0.52 x VCCIO
0.53 x VCCIO
HSTL-12
Class I, II
0.5 x
VCCIO
1.14
1.2
1.26
—
—
Notes to Table 1–16:
(1) For an explanation of terms used in Table 1–16, refer to “Glossary” on page 1–37.
(2) VTT of the transmitting device must track VREF of the receiving device.
(3) Value shown refers to DC input reference voltage, VREF(DC)
(4) Value shown refers to AC input reference voltage, VREF(AC)
.
.
Table 1–17. Single-Ended SSTL and HSTL I/O Standards Signal Specifications for Cyclone IV Devices
VIL(DC) (V)
Min Max
VREF
VIH(DC) (V)
Max
VIL(AC) (V)
Min Max
VREF
VIH(AC) (V)
Min Max
VOL (V)
Max
VOH (V)
Min
I/O
IOL
IOH
Standard
(mA) (mA)
Min
SSTL-2
Class I
–
VREF
0.18
+
–
VREF
0.35
+
VTT
–
VTT +
0.57
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
8.1
16.4 –16.4
6.7 –6.7
13.4 –13.4
–8.1
0.18
0.35
0.57
SSTL-2
Class II
VREF
0.18
–
VREF
0.18
+
VREF
–
VREF
0.35
+
VTT
–
VTT +
0.76
—
0.35
0.76
SSTL-18
Class I
VREF
0.125
–
VREF
+
VREF
–
VREF
0.25
+
VTT
–
VTT
+
—
0.125
0.25
0.475
0.475
SSTL-18
Class II
VREF
0.125
–
VREF
+
VREF
–
VREF
0.25
+
VCCIO
–
—
0.28
0.4
0.4
0.4
0.4
0.125
0.25
0.28
HSTL-18
Class I
VREF
0.1
–
–
–
–
–
VREF
0.1
+
+
+
+
+
VREF
0.2
–
VREF
0.2
+
VCCIO
0.4
–
—
8
16
8
–8
–16
–8
HSTL-18
Class II
VREF
0.1
VREF
0.1
VREF
0.2
–
–
–
–
VREF
0.2
+
+
+
+
VCCIO
0.4
–
–
–
—
HSTL-15
Class I
VREF
0.1
VREF
0.1
VREF
0.2
VREF
0.2
VCCIO
0.4
—
HSTL-15
Class II
VREF
0.1
VREF
0.1
VREF
0.2
VREF
0.2
VCCIO
0.4
—
16
8
–16
–8
HSTL-12
Class I
VREF
0.08
VREF
0.08
VREF
VREF
VCCIO
+
+
0.25 ×
VCCIO
0.75 ×
VCCIO
–0.15
–0.15
V
V
CCIO + 0.15 –0.24
CCIO + 0.15 –0.24
0.15
0.15
0.24
HSTL-12
Class II
VREF
0.08
–
VREF
0.08
+
VREF
–
VREF
+
VCCIO
0.24
0.25 ×
VCCIO
0.75 ×
VCCIO
14
–14
0.15
0.15
December 2013 Altera Corporation
Cyclone IV Device Handbook,
Volume 3
ALTERA [ ALTERA CORPORATION ]
