EP2SGX60CF780C4N Datasheet, PDF (278/316 Pages) Altera Corporation – Support for numerous single-ended and differential I/O standards

Table 4–93. Stratix II GX Maximum Output Clock Rate for Dedicated Clock Pins (Part 2 of 4)
I/O Standard
2.5 V
1.8 V
1.5 V
SSTL-2 Class I
SSTL-2 Class II
SSTL-18 Class I
SSTL-18 Class II
1.8-V HSTL Class I
Drive Strength
4 mA
8 mA
12 mA
16 mA (1)
2 mA
4 mA
6 mA
8 mA
10 mA
12 mA (1)
2 mA
4 mA
6 mA
8 mA (1)
8 mA
12 mA (1)
16 mA
20 mA
24 mA (1)
4 mA
6 mA
8 mA
10 mA
12 mA (1)
8 mA
16 mA
18 mA
20 mA (1)
4 mA
6 mA
8 mA
10 mA
12 mA (1)
-3 Speed
Grade
230
430
630
930
120
285
450
660
905
1131
244
470
550
625
400
400
350
400
400
200
350
450
500
650
200
400
450
550
300
500
650
700
700
-4 Speed
Grade
194
380
575
845
109
250
390
570
805
1040
200
370
430
495
300
400
350
350
400
150
250
300
400
550
200
350
400
500
300
450
600
650
700
-5 Speed
Grade
180
380
550
820
104
230
360
520
755
990
180
325
375
420
300
350
300
350
350
150
200
300
400
400
150
350
400
450
300
450
600
600
650
Unit
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz