DS15MB200_13 Datasheet, PDF (4/18 Pages) Texas Instruments – Dual 1.5 Gbps 2:1/1:2 LVDS Mux/Buffer with Pre-Emphasis

DS15MB200
SNLS196E – NOVEMBER 2005 – REVISED MARCH 2013
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Output Characteristics
The output characteristics of the DS15MB200 have been optimized for point-to-point backplane and cable
applications, and are not intended for multipoint or multidrop signaling.
A 100Ω output (source) termination resistor is incorporated in the device to eliminate the need for an external
resistor, providing excellent drive characteristics by locating the source termination as close to the output as
physically possible.
Pre-Emphasis Controls
The pre-emphasis is used to compensate for long or lossy transmission media. Separate pins are provided for
each output to minimize power consumption. Pre-emphasis is programmable to be off or on per the Pre-
emphasis Control Table.
PREx_n ⁽¹⁾
0
1
(1) Applies to PREA_0, PREA_1, PREB_0, PREB_1, PREL_0, PREL_1
Multiplexer Truth Table⁽²⁾⁽³⁾
Output Pre-Emphasis
0%
100%
SIA_0
X
valid
X
Data Inputs
SIB_0
valid
X
X
(2) Same functionality for channel 1
(3) X = Don't Care
Z = High Impedance (TRI-STATE)
Repeater/Buffer Truth Table⁽¹⁾⁽²⁾
Control Inputs
MUX_S0
0
1
X
ENL_0
1
1
0
Output
LO_0
SIB_0
SIA_0
Z
Data Input
LI_0
X
valid
valid
valid
ENA_0
0
0
1
1
Control Inputs
ENB_0
0
1
0
1
(1) Same functionality for channel 1
(2) X = Don't Care
Z = High Impedance (TRI-STATE)
SOA_0
Z
Z
LI_0
LI_0
Outputs
SOB_0
Z
LI_0
Z
LI_0
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
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