sy89540u Micrel Semiconductor, sy89540u Datasheet - Page 12

• Manufacturer Part Number: sy89540u
• Description: Precision Low Jitter 4x4 Lvds Crosspoint Switch With Internal Termination
• Manufacturer: Micrel Semiconductor

Input and Output Stage Internal
Termination
December 2007
Figure 3. Simplified Differential Input Stage
12
Output Stage Internal Termination
On a nominal 1.25V common mode above ground,
LVDS specifies a small swing of 350mV, typical. The
common mode voltage has tight limits to permit large
variations in ground between an LVDS driver and
receiver. Also, change in common mode voltage, as
a function of data input, is kept to a minimum to
keep EMI low.
Figure 4b. LVDS Common Mode Measurement
Figure 4a. LVDS Differential Measurement
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