8S89834AKILF IDT [Integrated Device Technology], 8S89834AKILF Datasheet - Page 11
8S89834AKILF
Manufacturer Part Number
8S89834AKILF
Description
Low Skew, 2-to-4 LVCMOS/LVTTL-to-LVPECL/ECL Clock Multiplexer
Manufacturer
IDT [Integrated Device Technology]
Datasheet
1.8S89834AKILF.pdf
(17 pages)
ICS8S89834I Data Sheet
Termination for 2.5V LVPECL Outputs
Figure 4A and Figure 4B show examples of termination for 2.5V
LVPECL driver. These terminations are equivalent to terminating 50Ω
to V
Figure 4A. 2.5V LVPECL Driver Termination Example
Figure 4C. 2.5V LVPECL Driver Termination Example
ICS8S89834AKI REVISION A FEBRUARY 4, 2010
CC
V
V
CC
CC
– 2V. For V
2.5V LVPECL Driver
2.5V LVPECL Driver
= 2.5V
= 2.5V
CC
= 2.5V, the V
50Ω
50Ω
50Ω
50Ω
CC
R1
250
– 2V is very close to ground
2.5V
R2
62.5
R1
50
R3
250
R4
62.5
R2
50
+
+
–
–
2.5V
2.5V
11
level. The R3 in Figure 4B can be eliminated and the termination is
shown in Figure 4C.
Figure 4B. 2.5V LVPECL Driver Termination Example
LOW SKEW, 2-TO-4 LVCMOS/LVTTL-TO-LVPECL/ECL CLOCK MULTIPLEXER
V
CC
2.5V LVPECL Driver
= 2.5V
50Ω
50Ω
©2010 Integrated Device Technology, Inc.
R1
50
R2
50
R3
18
+
–
2.5V