853S057AGILF IDT, 853S057AGILF Datasheet - Page 10

• Manufacturer Part Number: 853S057AGILF
• Description: Clock Drivers & Distribution
• Manufacturer: IDT

Specifications of 853S057AGILF

• Product Category: Clock Drivers & Distribution
• Rohs: yes
• Part # Aliases: ICS853S057AGILF

ICS853S057I 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
ICS853S057AGI REVISION A MAY 16, 2012
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
250Ω
– 2V is very close to ground
2.5V
R2
62.5Ω
R1
50Ω
R3
250Ω
R4
62.5Ω
R2
50Ω
+
+
–
–
2.5V
2.5V
10
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
4:1, DIFFERENTIAL-TO-3.3V, 2.5V LVPECL/ECL CLOCK DATA MULTIPLEXER
V
CC
2.5V LVPECL Driver
= 2.5V
50Ω
50Ω
©2012 Integrated Device Technology, Inc.
R1
50Ω
R2
50Ω
R3
18Ω
+
–
2.5V