889875AKLF IDT, Integrated Device Technology Inc, 889875AKLF Datasheet - Page 11

• Manufacturer Part Number: 889875AKLF
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Dividerr

Specifications of 889875AKLF

• Number Of Clock Inputs: 1
• Mode Of Operation: Differential
• Output Frequency: >2000MHz
• Output Logic Level: LVDS
• Operating Supply Voltage (min): 2.375V
• Operating Supply Voltage (typ): 2.5V
• Operating Supply Voltage (max): 2.625V
• Package Type: VFQFN
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Signal Type: CML/LVDS/LVPECL
• Mounting: Surface Mount
• Pin Count: 16
• Lead Free Status / RoHS Status: Compliant

Schematic Example
Figure 6 shows a schematic example of the ICS889875. This
schematic provides examples of input and output handling. The
ICS889875 input has built-in 50Ω termination resistors. The input
can directly accept various types of differential signals without AC
coupling. For AC coupling termination, the ICS889875 also
provides the V
Figure 6. ICS889875 Schematic Example
IDT™ / ICS™ LVDS BUFFER/DIVIDER W/INTERNAL TERMINATION
ICS889875
DIFFERENTIAL-TO-LVDS BUFFER/DIVIDER W/INTERNAL TERMINATION
2.5V
LVPECL
R1
150
REF_AC
R2
150
pin for proper offset bias. This example
Zo = 50
Zo = 50
100 Ohm Dif f erential
2.5V
U1
ICS889875
10
11
12
9
0.1u
C2
nIN
VREF_AC
VT
IN
nQ1
nQ0
Q1
Q0
2.5V
11
4
3
2
1
0.1u
shows the ICS889875 input driven by a 2.5V LVPECL driver. The
ICS889875 outputs are LVDS drivers. In this example, we assume
the traces are long transmission lines and the receivers of the
LVDS drivers have high input impedance without built-in
termination.
C1
Q0
nQ0
nQ1
Q1
100 Ohm Dif f erential
100 Ohm Dif f erential
Zo = 50
Zo = 50
Zo = 50
Zo = 50
R3
100
R4
100
ICS889875AK REV. B OCTOBER 27, 2008
-
+
-
+
2.5V
2.5V