ICS8536-02 IDT [Integrated Device Technology], ICS8536-02 Datasheet - Page 12

• Manufacturer Part Number: ICS8536-02
• Description: Low Skew, 1-to-6, Dual Crystal/LVCMOS-to-3.3V, 2.5V LVPECL Fanout Buffer
• Manufacturer: IDT [Integrated Device Technology]

ICS8536-02 Data Sheet
Termination for 2.5V LVPECL Outputs
Figure 5A and Figure 5B show examples of termination for 2.5V
LVPECL driver. These terminations are equivalent to terminating
50Ω to V
Figure 5A. 2.5V LVPECL Driver Termination Example
Figure 5C. 2.5V LVPECL Driver Termination Example
ICS8536AG-02 REVISION A JULY 21, 2010
V
V
CCO
CCO
2.5V LVPECL Driver
2.5V LVPECL Driver
CC
= 2.5V
= 2.5V
– 2V. For V
CC
50Ω
50Ω
50Ω
50Ω
= 2.5V, the V
R1
250
2.5V
R1
50
R2
62.5
CC
– 2V is very close to
R3
250
R2
50
R4
62.5
+
–
+
–
2.5V
2.5V
12
ground level. The R3 in Figure 5B can be eliminated and the
termination is shown in Figure 5C.
Figure 5B. 2.5V LVPECL Driver Termination Example
1-TO-6, DUALCRYSTAL/LVCMOS-TO-3.3V, 2.5V LVPECL FANOUT BUFFER
V
CCO
2.5V LVPECL Driver
= 2.5V
50Ω
50Ω
©2010 Integrated Device Technology, Inc.
R1
50
R2
50
R3
18
+
–
2.5V