Bidirectional buffer having tri-state buffers for circuit isolat

Details Bidirectional buffer having tri-state buffers for circuit isolat Bidirectional buffer having tri-state buffers for circuit isolat

1991-04-12

1992-04-21

Westin, Edward P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307475, 307242, 307468, G06F 1120, G05B 2402, H03K 19094, H03K 1704

Patent

active

051071487

ABSTRACT:
When testing one circuit block of a device, it is desired to have isolation from the other circuit blocks of the device so as to prevent possible failure of the other circuit blocks. A block isolation buffer includes a circuit for providing predetermined voltage levels at the inputs of the circuit blocks which are not being tested thereby assuring that an undesired input does not appear at the inputs of the non-tested circuit blocks.

REFERENCES:
patent: 4154978 (1979-05-01), Tu
patent: 4419592 (1983-12-01), Norgren et al.
patent: 4479067 (1984-10-01), Fujita
patent: 4756006 (1988-07-01), Rickard
patent: 4827368 (1989-05-01), Suzuki et al.
patent: 4866309 (1989-09-01), Bonke et al.
patent: 5023487 (1991-06-01), Wellheuser et al.

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