Page 14
Electrical Characteristics
Table 18. Single-Ended SSTL, HSTL, and HSUL I/O Reference Voltage Specifications for Stratix V Devices
VCCIO (V)
Typ
VREF (V)
Typ
VTT (V)
Typ
I/O Standard
Min
Max
Min
Max
Min
Max
SSTL-2
Class I, II
0.49 *
VCCIO
0.51 *
VCCIO
VREF
0.04
–
VREF
0.04
+
2.375
2.5
1.8
2.625
0.5 * VCCIO
0.9
VREF
VREF
SSTL-18
Class I, II
VREF
0.04
–
VREF
0.04
+
1.71
1.425
1.283
1.19
1.89
1.575
1.418
1.26
1.26
1.89
1.575
1.26
1.3
0.833
0.969
SSTL-15
Class I, II
0.49 *
VCCIO
0.51 *
VCCIO
0.49 *
VCCIO
0.5 *
VCCIO
0.51 *
VCCIO
1.5
0.5 * VCCIO
0.5 * VCCIO
0.5 * VCCIO
0.5 * VCCIO
0.9
SSTL-135
Class I, II
0.49 *
VCCIO
0.51 *
VCCIO
0.49 *
VCCIO
0.5 *
VCCIO
0.51 *
VCCIO
1.35
1.25
1.20
1.8
SSTL-125
Class I, II
0.49 *
VCCIO
0.51 *
VCCIO
0.49 *
VCCIO
0.5 *
VCCIO
0.51 *
VCCIO
SSTL-12
Class I, II
0.49 *
VCCIO
0.51 *
VCCIO
0.49 *
VCCIO
0.5 *
VCCIO
0.51 *
VCCIO
1.14
HSTL-18
Class I, II
1.71
0.85
0.68
0.95
0.9
—
—
—
—
VCCIO/2
—
—
—
—
HSTL-15
Class I, II
1.425
1.14
1.5
0.75
VCCIO/2
HSTL-12
Class I, II
0.47 *
VCCIO
0.53 *
VCCIO
1.2
0.5 * VCCIO
0.5 * VCCIO
VCCIO/2
—
0.49 *
VCCIO
0.51 *
VCCIO
HSUL-12
1.14
1.2
Table 19. Single-Ended SSTL, HSTL, and HSUL I/O Standards Signal Specifications for Stratix V Devices (Part 1 of 2)
VIL(DC) (V)
VIH(DC) (V)
Min Max
VREF
VIL(AC) (V)
Max
VIH(AC) (V)
Min
VOL (V)
Max
VOH (V)
Min
Ioh
I/O Standard
Iol (mA)
(mA)
Min
Max
VREF
0.15
SSTL-2
Class I
–
+
VCCIO
0.3
+
+
+
+
VREF
–
VTT
–
VTT
+
–0.3
VREF + 0.31
VREF + 0.31
VREF + 0.25
VREF + 0.25
8.1
16.2
6.7
13.4
8
–8.1
–16.2
–6.7
–13.4
–8
0.15
0.31
0.608
0.608
SSTL-2
Class II
VREF
0.15
–
VREF
0.15
+
VCCIO
0.3
VREF
–
VTT
–
VTT
+
–0.3
–0.3
–0.3
—
0.31
0.81
0.81
SSTL-18
Class I
VREF
0.125
–
VREF
0.125
+
VCCIO
0.3
VREF
–
VTT
–
VTT +
0.603
0.25
0.603
SSTL-18
Class II
VREF
0.125
–
VREF
0.125
+
VCCIO
0.3
VREF
–
VCCIO
–
0.28
0.25
0.28
SSTL-15
Class I
VREF
0.1
–
–
–
VREF
0.1
+
+
+
VREF
–
VREF
+
0.2 *
VCCIO
0.8 *
VCCIO
—
—
—
—
—
0.175
0.175
SSTL-15
Class II
VREF
0.1
VREF
0.1
VREF
–
VREF
+
0.2 *
VCCIO
0.8 *
VCCIO
—
16
–16
—
0.175
0.175
SSTL-135
Class I, II
VREF
0.09
VREF
0.09
VREF
–
0.2 *
VCCIO
0.8 *
VCCIO
—
VREF + 0.16
—
0.16
SSTL-125
Class I, II
VREF
0.85
–
VREF
0.85
+
VREF
–
0.2 *
VCCIO
0.8 *
VCCIO
—
VREF + 0.15
VREF + 0.15
—
—
0.15
SSTL-12
Class I, II
VREF
0.1
–
VREF
0.1
+
VREF
–
0.2 *
VCCIO
0.8 *
VCCIO
—
—
—
0.15
Stratix V Device Datasheet
December 2015 Altera Corporation