DS10CP152Q_14 Datasheet, PDF (7/15 Pages) Texas Instruments – Automotive 1.5 Gbps 2X2 LVDS Crosspoint Switch

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DS10CP152Q
SNLS295E – MAY 2008 – REVISED APRIL 2013
INPUT INTERFACING
The DS10CP152Q accepts differential signals and allows simple AC or DC coupling. With a wide common mode
range, the DS10CP152Q can be DC-coupled with all common differential drivers (i.e. LVPECL, LVDS, CML).
The following three figures illustrate typical DC-coupled interface to common differential drivers. Note that the
DS10CP152Q inputs are internally terminated with a 100Ω resistor.
LVDS
Driver
OUT+
100: Differential T-Line
IN+
DS10CP152
Receiver
100:
OUT-
IN-
Figure 6. Typical LVDS Driver DC-Coupled Interface to an DS10CP152Q Input
CML3.3V or CML2.5V
Driver
V_CC
50:
50:
OUT+
100: Differential T-Line
IN+
DS10CP152
Receiver
100:
OUT-
IN-
Figure 7. Typical CML Driver DC-Coupled Interface to an DS10CP152Q Input
LVPECL
Driver
OUT+
OUT-
150-250:
100: Differential T-Line
IN+
LVDS
Receiver
100:
IN-
150-250:
Figure 8. Typical LVPECL Driver DC-Coupled Interface to an DS10CP152Q Input
OUTPUT INTERFACING
The DS10CP152Q outputs signals compliant to the LVDS standard. Its outputs can be DC-coupled to most
common differential receivers. The following figure illustrates typical DC-coupled interface to common differential
receivers and assumes that the receivers have high impedance inputs. While most differential receivers have a
common mode input range that can accomodate LVDS compliant signals, it is recommended to check respective
receiver's data sheet prior to implementing the suggested interface implementation.
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