Bus terminator circuit having RC elements

Details Bus terminator circuit having RC elements Bus terminator circuit having RC elements

1991-10-07

1993-05-04

Pascal, Robert J.

Wave transmission lines and networks

Dissipating terminations for long lines

Fluid-cooling

307443, H01P 124

Patent

active

052085627

ABSTRACT:
A power bus terminator circuit for use with personal computers and the like is designed to hold the circuit termination pins at a pre-established voltage while dissipating a relatively small amount of power (approximately 20 mW) during steady state operation. This is accomplished by connecting sets of first and second high impedance resistors together at a terminal, and in series between the bus terminator pins. Each of the terminals is connected through a relatively low value resistor to each one of the circuit termination pins, and through a capacitor, to one of the bus terminals to permit high-speed operation of the AC switching transitions of the circuits coupled to the termination pins. A relatively low amount of power (approximately another 30 mW or so) is consumed during the transitions of the signals appearing on the termination pins. The circuit results in a power dissipation reduction of between 90% to 75% over standard bus terminator circuits.

REFERENCES:
patent: 3585399 (1971-06-01), Andrews, Jr.
patent: 4310812 (1982-01-01), DeBlodis
patent: 4553050 (1985-11-01), Feinberg et al.
patent: 4626804 (1986-12-01), Risher et al.
patent: 4703302 (1987-10-01), Hino et al.
patent: 4748426 (1988-05-01), Stewart
patent: 4804940 (1989-02-01), Takigawa et al.
patent: 4882554 (1989-11-01), Akaba et al.
patent: 5086271 (1992-02-01), Haill et al.

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