Datasheet

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COLD SPARING
RELATED INFORMATION
SN55LVDS32 , SN65LVDS32
SN65LVDS3486 , SN65LVDS9637
SLLS262Q – JULY 1997 – REVISED JULY 2007
APPLICATION INFORMATION (continued)
Systems using cold sparing have a redundant device electrically connected without power supplied. To support
this configuration, the spare must present a high-input impedance to the system so that it does not draw
appreciable power. In cold sparing, voltage may be applied to an I/O before and during power up of a device.
When the device is powered off, V
CC
must be clamped to ground and the I/O voltages applied must be within the
specified recommended operating conditions.
IBIS modeling is available for this device. Contact the local TI sales office or the TI Web site at www.ti.com for
more information.
For more application guidelines, see the following documents:
• Low-Voltage Differential Signaling Design Notes (SLLA014 )
• Interface Circuits for TIA/EIA-644 (LVDS) (SLLA038 )
• Reducing EMI With LVDS (SLLA030 )
• Slew Rate Control of LVDS Circuits (SLLA034 )
• Using an LVDS Receiver With TIA/EIA-422 Data (SLLA031 )
• Low Voltage Differential Signaling (LVDS) EVM (SLLA033 )
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