ep1s25 Altera Corporation, ep1s25 Datasheet - Page 245

• Manufacturer Part Number: ep1s25
• Description: Stratix Device Family Data Sheet
• Manufacturer: Altera Corporation

Altera Corporation
January 2006
Note to
(1)
Note to
(1)
Note to
(1)
Drive Strength
VCCIO Voltage
Level
Table 4–111. Output Delay Adder for Loading on LVTTL/LVCMOS Output Buffers
Table 4–112. Output Delay Adder for Loading on SSTL/HSTL Output Buffers
Table 4–113. Output Delay Adder for Loading on GTL+/GTL/CTT/PCI Output Buffers
Parameter
Parameter
The timing information in this table is preliminary.
The timing information in this table is preliminary.
The timing information in this table is preliminary.
Table
Table
Table
Conditions
Class II
Conditions
Class I
Conditions
4–111:
4–112:
4–113:
Value
3.3V
2.5V
Value
24mA
16mA
12mA
8mA
4mA
2mA
The scaling factors for column output pin timing in
are shown in units of time per pF unit of capacitance (ps/pF). Add this
delay to the t
pins in addition to the I/O adder delays shown in
4–108
3.3-V LVTTL
SSTL-3
and the IOE programmable delays in
GTL+
25
25
18
15
15
25
30
50
60
–
CO
or combinatorial timing path for output or bidirectional
2.5-V LVTTL
Output Pin Adder Delay (ps/pF)
GTL
18
18
Output Pin Adder Delay (ps/pF)
SSTL-2
Output Pin Adder Delay (ps/pF)
18
25
35
75
–
–
25
20
1.8-V LVTTL
CTT
120
25
25
40
-
–
–
–
Stratix Device Handbook, Volume 1
SSTL-1.8
DC & Switching Characteristics
25
25
Tables 4–109
Note (1)
1.5-V LVTTL
Note (1)
Tables 4–103
160
Tables 4–111
PCI
35
80
20
–
–
-
-
Note (1)
and 4–110.
1.5-V HSTL
25
20
LVCMOS
through
to
AGP
15
20
30
60
8
–
20
-
4–113
4–75