CV-51002
2015.12.04
19
Single-Ended SSTL, HSTL, and HSUL I/O Standards Signal Specifications
Single-Ended SSTL, HSTL, and HSUL I/O Standards Signal Specifications
Table 16: Single-Ended SSTL, HSTL, and HSUL I/O Standards Signal Specifications for Cyclone V Devices
VIL(DC) (V)
Max
VIH(DC) (V)
VIL(AC) (V)
Max
VIH(AC) (V)
Min
VOL (V)
Max
VOH (V)
Min
(19)
IOL
I/O Standard
IOH(19) (mA)
(mA)
Min
Min
Max
SSTL-2
Class I
–0.3
VREF – 0.15 VREF + 0.15 VCCIO + 0.3 VREF – 0.31 VREF + 0.31 VTT – 0.608 VTT + 0.608
VREF – 0.15 VREF + 0.15 VCCIO + 0.3 VREF – 0.31 VREF + 0.31 VTT – 0.81 VTT + 0.81
VREF – 0.125 VREF + 0.125 VCCIO + 0.3 VREF – 0.25 VREF + 0.25 VTT – 0.603 VTT + 0.603
VREF – 0.125 VREF + 0.125 VCCIO + 0.3 VREF – 0.25 VREF + 0.25 0.28 VCCIO – 0.28
8.1
–8.1
SSTL-2
Class II
–0.3
–0.3
–0.3
—
16.2
6.7
13.4
8
–16.2
–6.7
–13.4
–8
SSTL-18
Class I
SSTL-18
Class II
SSTL-15
Class I
VREF – 0.1
VREF – 0.1
VREF + 0.1
VREF + 0.1
—
—
VREF – 0.175 VREF + 0.175 0.2 × VCCIO 0.8 × VCCIO
VREF – 0.175 VREF + 0.175 0.2 × VCCIO 0.8 × VCCIO
SSTL-15
Class II
—
16
–16
SSTL-135
SSTL-125
—
—
—
VREF – 0.09 VREF + 0.09
VREF – 0.85 VREF + 0.85
—
—
—
VREF – 0.16 VREF + 0.16 0.2 × VCCIO 0.8 × VCCIO
VREF – 0.15 VREF + 0.15 0.2 × VCCIO 0.8 × VCCIO
—
—
8
—
—
–8
HSTL-18
Class I
VREF – 0.1
VREF – 0.1
VREF – 0.1
VREF + 0.1
VREF + 0.1
VREF + 0.1
VREF – 0.2
VREF – 0.2
VREF – 0.2
VREF + 0.2
VREF + 0.2
VREF + 0.2
0.4
0.4
0.4
VCCIO – 0.4
VCCIO – 0.4
VCCIO – 0.4
HSTL-18
Class II
—
—
—
—
16
8
–16
–8
HSTL-15
Class I
(19)
To meet the IOL and IOH specifications, you must set the current strength settings accordingly. For example, to meet the SSTL15CI specification (8
mA), you should set the current strength settings to 8 mA. Setting at lower current strength may not meet the IOL and IOH specifications in the
datasheet.
Cyclone V Device Datasheet
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