XC2S50 Xilinx, Inc., XC2S50 Datasheet - Page 48

• Manufacturer Part Number: XC2S50
• Description: Spartan-II 2.5V FPGA Family
• Manufacturer: Xilinx, Inc.

SSTL3 Class I
A sample circuit illustrating a valid termination technique for
SSTL3_I appears in
appear in
Table 24: SSTL3_I Voltage Specifications
DS001-2 (v2.2) September 3, 2003
Product Specification
Notes:
1.
2.
V
V
V
V
V
V
V
I
I
OH
OL
OH
OL
CCO
REF
TT
IH
IL
V
V
at V
≤ V
SSTL3 Class I
≥ V
at V
= V
≤ V
IH
IL
≥ V
= 0.45 × V
V
minimum does not conform to the formula.
REF
maximum is V
CCO
REF
OL
REF
REF
OH
REF
Figure 46: Terminated SSTL3 Class I
Table
Parameter
(mA)
R
= 3.3V
– 0.2
(mA)
+ 0.2
– 0.6
+ 0.6
24.
CCO
25Ω
CCO
Figure
+ 0.3.
46. DC voltage specifications
Z = 50
V
REF
–0.3
Min
= 1.5V
3.0
1.3
1.3
1.5
1.9
50Ω
–8
V
8
-
TT
(2)
= 1.5V
DS001_47_061200
Typ
3.3
1.5
1.5
1.7
1.3
-
-
-
-
3.9
Max
3.6
1.7
1.7
1.5
1.1
www.xilinx.com
1-800-255-7778
-
-
-
(1)
SSTL3 Class II
A sample circuit illustrating a valid termination technique for
SSTL3_II appears in
appear in
Table 25: SSTL3_II Voltage Specifications
Notes:
1.
2.
V
V
V
V
V
V
V
I
I
OH
OL
OH
OL
CCO
REF
TT
IH
IL
Spartan-II 2.5V FPGA Family: Functional Description
V
V
at V
≤ V
SSTL3 Class II
at V
≥ V
= V
≤ V
IH
IL
≥ V
= 0.45 × V
V
minimum does not conform to the formula
REF
maximum is V
CCO
OL
REF
REF
REF
OH
Figure 47: Terminated SSTL3 Class II
REF
Table
Parameter
(mA)
= 3.3V
– 0.2
(mA)
+ 0.2
– 0.8
+ 0.8
25Ω
25.
CCO
50Ω
V
CCO
TT
Figure
= 1.5V
+ 0.3
47. DC voltage specifications
Z = 50
V
REF
–0.3
Min
= 1.5V
–16
50Ω
3.0
1.3
1.3
1.5
2.1
V
16
-
TT
(2)
= 1.5V
DS001_48_061200
Typ
3.3
1.5
1.5
1.7
1.3
Module 2 of 4
-
-
-
-
3.9
Max
3.6
1.7
1.7
1.5
0.9
-
-
-
(1)
41