85354AKLF IDT, Integrated Device Technology Inc, 85354AKLF Datasheet - Page 11

• Manufacturer Part Number: 85354AKLF
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 85354AKLF

• Function: Clock Multiplexer
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Package Type: VFQFN
• Pin Count: 16
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

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
IDT™ / ICS™ LVPECL/ECL MULTIPLEXER
ICS85354
DUAL 2:1 AND 1:2, DIFFERENTIAL-TO-LVPECL/ECL MULTIPLEXER
V
V
CC
CC
2.5V LVPECL Driver
2.5V LVPECL Driver
= 2.5V
= 2.5V
CC
– 2V. For V
CC
50Ω
50Ω
50Ω
50Ω
= 2.5V, the V
R1
250
2.5V
R2
62.5
R1
50
CC
– 2V is very close to
R3
250
R4
62.5
R2
50
+
–
+
–
2.5V
2.5V
11
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
V
CC
2.5V LVPECL Driver
= 2.5V
50Ω
50Ω
ICS85354AK REV. C NOVEMBER 04, 2008
R1
50
R2
50
R3
18
+
–
2.5V