853S54AKILF IDT, Integrated Device Technology Inc, 853S54AKILF Datasheet - Page 12

• Manufacturer Part Number: 853S54AKILF
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 853S54AKILF

• Lead Free Status / RoHS Status: Supplier Unconfirmed

ICS853S54I Data Sheet
Termination for 2.5V LVPECL Outputs
Figure 6A and Figure 6B show examples of termination for 2.5V
LVPECL driver. These terminations are equivalent to terminating 50Ω
to V
Figure 6A. 2.5V LVPECL Driver Termination Example
Figure 6C. 2.5V LVPECL Driver Termination Example
ICS853S54AKI REVISION A DECEMBER 18, 2009
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
12
level. The R3 in Figure 6B can be eliminated and the termination is
shown in Figure 6C.
Figure 6B. 2.5V LVPECL Driver Termination Example
V
CC
2.5V LVPECL Driver
= 2.5V
DUAL 2:1, 1:2 DIFFERENTIAL-TO-LVPECL/ECL MULTIPLEXER
50Ω
50Ω
©2009 Integrated Device Technology, Inc.
R1
50
R2
50
R3
18
+
–
2.5V