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ICS853S013I Datasheet, PDF (11/16 Pages) Integrated Device Technology – Output frequency | |||
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ICS853S013I Data Sheet
LOW SKEW, DUAL, 1-TO-3, DIFFERENTIAL-TO-2.5V, 3.3V LVPECL/ECL FANOUT BUFFER
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 50â¦
to VCC â 2V. For VCC = 2.5V, the VCC â 2V is very close to ground
level. The R3 in Figure 4B can be eliminated and the termination is
shown in Figure 4C.
VCC = 2.5V
50â¦
50â¦
2.5V LVPECL Driver
2.5V
R1
250â¦
R3
250â¦
2.5V
+
â
R2
62.5â¦
R4
62.5â¦
VCC = 2.5V
50â¦
50â¦
2.5V LVPECL Driver
2.5V
+
â
R1
R2
50â¦
50â¦
R3
18â¦
Figure 4A. 2.5V LVPECL Driver Termination Example
Figure 4B. 2.5V LVPECL Driver Termination Example
VCC = 2.5V
50â¦
50â¦
2.5V LVPECL Driver
2.5V
+
â
R1
R2
50â¦
50â¦
Figure 4C. 2.5V LVPECL Driver Termination Example
ICS853S013AMI REVISION A AUGUST 20, 2010
11
©2010 Integrated Device Technology, Inc.
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