Switchable active bus termination circuit

Details Switchable active bus termination circuit Switchable active bus termination circuit

1991-12-23

1995-01-17

Westin, Edward P.

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

327540, 327546, H03K 1716, H03K 500

Patent

active

053828410

ABSTRACT:
A bus termination circuit actively switches a terminating resistor from the bus conductor in response to a control signal. A first state of the control signal connects the bus conductor through the terminating resistor to a voltage reference source, while a second state of the control signal isolates the bus conductor from the voltage reference source. Thus, the switchable active bus termination circuit can be permanently installed in computer peripheral devices and activated by the control signal.

REFERENCES:
patent: 4220876 (1980-09-01), Ray
patent: 4675551 (1987-06-01), Stevenson et al.
patent: 4748426 (1988-05-01), Stewart
patent: 4859877 (1989-08-01), Cooperman et al.
patent: 5029284 (1991-07-01), Feldbaumer et al.
"Unitrode SCSI Active Terminator", Data Manual pp. 2-4 UC5601, Sep. 1991.

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