Integrated circuit having input and output drivers cascaded betw

Details Integrated circuit having input and output drivers cascaded betw Integrated circuit having input and output drivers cascaded betw

1986-08-11

1987-07-28

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307446, 307465, 307303, 364491, 364900, H03K 17693, H03K 19094

Patent

active

046833846

ABSTRACT:
An integrated circuit having the circuit construction wherein a plurality of each of input and output circuits are formed in such a manner as to form pairs and to correspond to a plurality of external connection pads, respectively, and are used selectively to replace the function of an internal circuit. A signal transmission path of an input circuit formed so as to correspond to an external connection pad to which an external input signal is applied at an input portion and at least part of a signal transmission path of an output circuit formed so as to correspond to the external connection pad are connected in series between the external connection pad and an input terminal of the internal circuit in order to use the signal transmission function of the output circuit as the function of the internal circuit. At an output portion, on the other hand, at least part of the signal transmission path of an input circuit formed so as to correspond to an external connection pad for delivering an output signal to the outside and a signal transmission path of an output circuit formed so as to correspond to the external connection pad are connected in series between the output terminal of the internal circuit and the external connection pad in order to use the signal transmission function of the input circuit as the function of the internal circuit.

REFERENCES:
patent: 4350906 (1982-09-01), Gillberg
patent: 4479067 (1984-10-01), Fujita
patent: 4523106 (1985-06-01), Tanizawa et al.
patent: 4575646 (1986-03-01), Saneski
patent: 4600995 (1986-07-01), Kinoshita
patent: 4612466 (1986-09-01), Stewart
Vicary, "Semiconductor Chip Layout of a Driver/Receiver Circuit", IBM T.D.B., vol. 19, No. 10, Mar. 1977, pp. 3739-3740.

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