Active termination for a transmission line

Details Active termination for a transmission line Active termination for a transmission line

H - Electricity

04

B

340/104

H04B 3/02 (2006.01) H03K 19/0175 (2006.01)

Patent

CA 1138954

27554 ACTIVE TERMINATION FOR A TRANSMISSION LINE Abstract of the Disclosure A tri-state buffer having the output thereof electrically connected to the input thereof is utilized to provide an active termination for a transmission line carrying data, addresses, commands or other information. The tri-state buffer is enabled by a strobe signal so as to insure that the transmission line will be stable through the time period of the strobe signal when data, commands, addresses or other information is being transferred. A tri-state buffer having the output thereof electrically tied through a resistive element to the input thereof is utilized to provide an active termination for a transmission line carrying strobe-type signals. The tri-state buffer is always in an enabled state. The resistance element is used to help match the line impedance of the transmission line. This reduces the load on the strobe signal source and also reduces transmission line rinsing due to impedance mismatches.

341186

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