EP2C5F256C7N Datasheet, PDF (142/168 Pages) Altera Corporation – Section I. Cyclone II Device Family Data Sheet

Timing Specifications
Table 5–46. Maximum Output Clock Toggle Rate Derating Factors (Part 1 of 4)
Maximum Output Clock Toggle Rate Derating Factors (ps/pF)
I/O Standard
LVTTL
LVCMOS
2.5V
1.8V
1.5V
SSTL_2_CLASS_I
Drive
Column I/O Pins
Row I/O Pins
Dedicated Clock
Outputs
Strength
–6 –7 –8 –6 –7 –8 –6 –7 –8
Speed Speed Speed Speed Speed Speed Speed Speed Speed
Grade Grade Grade Grade Grade Grade Grade Grade Grade
4 mA
438 439 439 338 362 387 338 362 387
8 mA
306 321 336 267 283 299 267 283 299
12 mA 139 179 220 193 198 202 193 198 202
16 mA 145 158 172 139 147 156 139 147 156
20 mA
65 77
90
74
79
84
74
79
84
24 mA
19 20
21
14
18
22
14
18
22
4 mA
298 305 313 197 205 214 197 205 214
8 mA
190 205 219 112 118 125 112 118 125
12 mA
43 72 101 27
31
35
27
31
35
16 mA
87 99 110 —
—
—
—
—
—
20 mA
36 46
56
—
—
—
—
—
—
24 mA
24 25
27
—
—
—
—
—
—
4 mA
228 233 237 270 306 343 270 306 343
8 mA
173 177 180 191 199 208 191 199 208
12 mA
119 121 123 —
—
—
—
—
—
16 mA
64 65
66
—
—
—
—
—
—
2 mA
452 457 461 332 367 403 332 367 403
4 mA
321 347 373 244 291 337 244 291 337
6 mA
227 255 283 178 222 266 178 222 266
8 mA
37 118 199 58 133 207 58 133 207
10 mA
41 72 103 46
85 123 46
85 123
12 mA
7
8
10 13 28 44 13 28 44
2 mA
738 764 789 540 604 669 540 604 669
4 mA
499 518 536 300 354 408 300 354 408
6 mA
261 271 282 60 103 146 60 103 146
8 mA
22
25
29
—
—
—
—
—
—
8 mA
46 47 49 25 40 56 25 40 56
12 mA
67 69
70
23
42
60
23
42
60
5–52
Cyclone II Device Handbook, Volume 1
Altera Corporation
February 2008