LMH6574 Datasheet, PDF (16/27 Pages) National Semiconductor (TI) – 4:1 High Speed Video Multiplexer

LMH6574
SNCS103D – NOVEMBER 2004 – REVISED DECEMBER 2014
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Typical Application (continued)
While Figure 29 MUX expansion benefits from more isolation, originating from the parasitic loading of the un-
selected channels on the selected channel, afforded by individual R_OUT on each multiplexer output, this
configuration does not produce the fastest transition between individual LMH6574 devices. For the fastest
transition, the configuration of Figure 30 can be used where the LMH6574 output pins are all shorted together.
Figure 30. Alternate 8:1 MUX Expansion Schematic (for Faster SD Switching)
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