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Damping Resistor on Inputs/Outputs (R)

Series damping resistors (SDR), denoted by R in the device number, are included at all input/output and output ports of designated devices (see Figure below). The SDRs limit the current, thereby reducing signal undershoot and overshoot noise. Additionally, SDRs make line termination easier, which improves signal quality by reducing ringing and line reflections.

This tutorial is based on the Understanding and Interpreting Standard Logic Data Sheets application report (SZZA036).

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