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858S011AKILFT

P1-P3P4-P6P7-P9P10-P12P13-P14
7© Integrated Device Technology, Inc. September 19, 2017
ICS858S011I Datasheet
3.3V LVPECL Input with Built-In 50 Termination Interface
The IN /nIN with built-in 50 terminations accept LVDS, LVPECL,
CML, SSTL and other differential signals. Both differential inputs
must meet the V
PP
and V
CMR
input requirements. Figures 1A to 1E
show interface examples for the IN /nIN input with built-in 50
terminations driven by the most common driver types. The input
interfaces suggested here are examples only. If the driver is from
another vendor, use their termination recommendation. Please
consult with the vendor of the driver component to confirm the driver
termination requirements.
Figure 1A. IN/nIN Input with Built-In 50
Driven by an LVDS Driver
Figure 1C. IN/nIN Input with Built-In 50
Driven by a CML Driver with Open Collector
Figure 1E. IN/nIN Input with Built-In 50
Driven by an SSTL Driver
Figure 1B. IN/nIN Input with Built-In 50
Driven by an LVPECL Driver
Figure 1D. IN/nIN Input with Built-In 50
Driven by a CML Driver with Built-In 50
Pullup
SSTL
R1 25
R2 25
IN
nIN
VT
Receiv
With
Built-In
50Ω
3.3V
Zo = 50Ω
Zo = 50Ω
C1
C2
VT
V_REF_AC
50Ω
50Ω
3.3V CML with
Built-In Pullup
3.3V
IN
nIN
3.3V
Receiver wi
th
Built-In 50Ω
Zo = 50Ω
Zo = 50Ω
8© Integrated Device Technology, Inc. September 19, 2017
ICS858S011I Datasheet
2.5V LVPECL Input with Built-In 50 Termination Interface
The IN /nIN with built-in 50 terminations accept LVDS, LVPECL,
CML, SSTL and other differential signals. Both differential inputs
must meet the V
PP
and V
CMR
input requirements. Figures 2A to 2E
show interface examples for the IN /nIN with built-in 50
termination
input driven by the most common driver types. The input interfaces
suggested here are examples only. If the driver is from another
vendor, use their termination recommendation. Please consult with
the vendor of the driver component to confirm the driver termination
requirements.
Figure 2A. IN/nIN Input with Built-In 50
Driven by an LVDS Driver
Figure 2C. IN/nIN Input with Built-In 50
Driven by a CML Driver
Figure 2E. IN/nIN Input with Built-In 50
Driven by an SSTL Driver
Figure 2B. IN/nIN Input with Built-In 50
Driven by an LVPECL Driver
Figure 2D. IN/nIN Input with Built-In 50 Driven by a
CML Driver with Built-In 50 Pullup
SSTL
R1 25Ω
R2 25Ω
IN
nIN
VT
Receiv
With
Built-In
50Ω
2.5V
Zo = 50Ω
Zo = 50Ω
9© Integrated Device Technology, Inc. September 19, 2017
ICS858S011I Datasheet
Schematic Example
Figure 3 shows a schematic example of the ICS858S011I. This
schematic provides examples of input and output handling. The
ICS858S011I input has built-in 50 termination resistors. The input
can directly accept various types of differential signal without AC
couple. If AC couple termination is used, the ICS858S011I also
provides VREF_AC pin for proper offset level after AC couple. This
example shows the ICS858S011I input driven by a 3.3V LVPECL
driver. The ICS858S011I outputs are CML driver with built-in 50
pullup resistors. In this example, we assume the traces are long
transmission line and the receiver is high input impedance without
built-in matched load. An external 100 resistor across the receiver
input is required.
Figure 3. ICS858S011I Application Schematic Example
P1-P3P4-P6P7-P9P10-P12P13-P14

858S011AKILFT

Mfr. #:
Buy 858S011AKILFT
Manufacturer:
IDT
Description:
Clock Drivers & Distribution Low Skew,1-to-2,Diff CML Fanout Buffer
Lifecycle:
New from this manufacturer.
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