EP3SL50 Datasheet, PDF (44/341 Pages) Altera Corporation – Stratix III Device Handbook, Volume 2

1–34
Chapter 1: Stratix III Device Datasheet: DC and Switching Characteristics
I/O Timing
Table 1–37. Output Timing Measurement Methodology for Output Pins (Part 1 of 3)
I/O Standard
Loading and Termination
Measurement
Point
R_S
R_D
R_T
R_P
V_CCIO
V_CCPD
V_CC
V_TT
C_L (pF)
V_MEAS (v)
3.3-V LVTTL
—
—
—
— 3.135 3.135 1.05 —
0
1.5675
3.3-V LVCMOS
—
—
—
— 3.135 3.135 1.05 —
0
1.5675
3.0-V LVTTL
—
—
—
— 2.85 2.85 1.05 —
0
1.425
3.0-V LVCMOS
—
—
—
— 2.85 2.85 1.05 —
0
1.425
2.5-V
—
—
—
— 2.375 2.375 1.05 —
0
1.1875
1.8-V
—
—
—
— 1.71 2.375 1.05 —
0
0.855
1.5-V
—
—
—
— 1.425 2.375 1.05 —
0
0.7125
1.2-V
—
—
—
— 1.14 2.375 1.05 —
0
0.57
PCI
—
—
—
— 2.85 2.85 1.05 —
10
1.425
PCI-X
—
—
—
— 2.85 2.85 1.05 —
10
1.425
SSTL-2 CLASS I
25
—
50
— 2.325 2.325 1.02 1.25
0
1.1625
SSTL-2 CLASS II
25
—
25
— 2.325 2.325 1.02 1.25
0
1.1625
SSTL-18 CLASS I
25
—
50
— 1.66 2.325 1.02 0.90
0
0.83
SSTL-18 CLASS II
25
—
25
— 1.66 2.325 1.02 0.90
0
0.83
SSTL-15 CLASS I
25
—
50
— 1.375 2.325 1.02 0.75
0
0.6875
SSTL-15 CLASS II
25
—
25
— 1.375 2.325 1.02 0.75
0
0.6875
1.8-V HSTL CLASS I —
—
50
— 1.66 2.325 1.02 0.90
0
0.83
1.8-V HSTL
CLASS II
—
—
25
— 1.66 2.325 1.02 0.90
0
0.83
1.5-V HSTL CLASS I —
—
50
— 1.375 2.325 1.02 0.75
0
0.6875
1.5-V HSTL
CLASS II
—
—
25
— 1.375 2.325 1.02 0.75
0
0.6875
1.2-V HSTL CLASS I —
—
50
— 1.09 2.325 1.02 0.60
0
0.545
1.2-V HSTL
CLASS II
—
—
25
— 1.09 2.325 1.02 0.60
0
0.545
Differential SSTL-2
CLASS I
25
—
50
— 2.325 2.325 1.02 1.25
0
1.1625
Differential SSTL-2
CLASS II
25
—
25
— 2.325 2.325 1.02 1.25
0
1.1625
Differential SSTL-18
CLASS I
25
—
50
— 1.66 2.325 1.02 0.90
0
0.83
Differential SSTL-18
CLASS II
25
—
25
— 1.66 2.325 1.02 0.90
0
0.83
1.8-V Differential
HSTL CLASS I
—
—
50
— 1.66 2.325 1.02 0.90
0
0.83
1.8-V Differential
HSTL CLASS II
—
—
25
— 1.66 2.325 1.02 0.90
0
0.83
1.5-V Differential
HSTL CLASS I
—
—
50
— 1.375 2.325 1.02 0.75
0
0.6875
Stratix III Device Handbook, Volume 2
© July 2010 Altera Corporation