Chapter 1: Cyclone III Device Datasheet
Electrical Characteristics
Table 1–14. Cyclone III Devices Single-Ended SSTL and HSTL I/O Reference Voltage Specifications
1–11
I/O
V CCIO (V)
V REF (V)
V TT (V)
Standard
SSTL-2
Class I, II
SSTL-18
Class I, II
HSTL-18
Class I, II
HSTL-15
Class I, II
Min
2.375
1.7
1.71
1.425
Typ
2.5
1.8
1.8
1.5
Max
2.625
1.9
1.89
1.575
Min
1.19
0.833
0.85
0.71
Typ
1.25
0.9
0.9
0.75
Max
1.31
0.969
0.95
0.79
Min
V REF –
0.04
V REF –
0.04
0.85
0.71
Typ
V REF
V REF
0.9
0.75
Max
V REF +
0.04
V REF +
0.04
0.95
0.79
HSTL-12
Class I, II
1.14
1.2
1.26
0.48 * V CCIO
0.47 * V CCIO
0.5 * V CCIO
0.5 * V CCIO
0.52 * V CCIO
0.53 * V CCIO
0.5 *
V CCIO
Notes to Table 1–14 :
(1) For an explanation of terms used in Table 1–14 , refer to “Glossary” on page 1–27 .
(2) V TT of 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 1–15. Cyclone III Devices Single-Ended SSTL and HSTL I/O Standards Signal Specifications
I/O
V IL(DC) (V)
V IH(DC) (V)
V IL(AC) (V)
V IH(AC) (V)
V OL (V)
V OH (V)
I OL
I OH
Standard
SSTL-2
Class I
SSTL-2
Class II
SSTL-18
Class I
SSTL-18
Class II
HSTL-18
Class I
HSTL-18
Class II
HSTL-15
Class I
HSTL-15
Class II
Min
Max
V REF –
0.18
V REF –
0.18
V REF –
0.125
V REF –
0.125
V REF –
0.1
V REF –
0.1
V REF –
0.1
V REF –
0.1
Min
V REF +
0.18
V REF +
0.18
V REF +
0.125
V REF +
0.125
V REF +
0.1
V REF +
0.1
V REF +
0.1
V REF +
0.1
Max
Min
Max
V REF –
0.35
V REF –
0.35
V REF –
0.25
V REF –
0.25
V REF –
0.2
V REF –
0.2
V REF –
0.2
V REF –
0.2
Min
V REF +
0.35
V REF +
0.35
V REF +
0.25
V REF +
0.25
V REF +
0.2
V REF +
0.2
V REF +
0.2
V REF +
0.2
Max
Max
V TT –
0.57
V TT –
0.76
V TT –
0.475
0.28
0.4
0.4
0.4
0.4
Min
V TT +
0.57
V TT +
0.76
V TT +
0.475
V CCIO –
0.28
V CCIO –
0.4
V CCIO –
0.4
V CCIO –
0.4
V CCIO –
0.4
(mA)
8.1
16.4
6.7
13.4
8
16
8
16
(mA)
–8.1
–16.4
–6.7
–13.4
–8
–16
–8
–16
HSTL-12
Class I
HSTL-12
Class II
–0.15
–0.15
V REF –
0.08
V REF –
0.08
V REF +
0.08
V REF +
0.08
V CCIO + 0.15 –0.24
V CCIO + 0.15 –0.24
V REF –
0.15
V REF –
0.15
V REF +
0.15
V REF +
0.15
V CCIO +
0.24
V CCIO +
0.24
0.25 ×
V CCIO
0.25 ×
V CCIO
0.75 ×
V CCIO
0.75 ×
V CCIO
8
14
–8
–14
July 2012
Altera Corporation
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