Interface circuit between two circuits of different logic types

Details Interface circuit between two circuits of different logic types Interface circuit between two circuits of different logic types

1990-06-15

1991-09-03

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307448, 307450, 307355, 307359, 307362, H03K 1902, H03K 1716

Patent

active

050457276

ABSTRACT:
This interface constitutes an adaptation of the output signals of a first circuit, made of silicon for example, to the limit values of the input signals in a second digital circuit, made of GaAs for example. It includes a first stage (A) consisting of two parallel-mounted shifters, in which the input signal (E) and a reference (Ref) are shifted. A second stage (B), of the BFL type, compares these two values and a third stage (C) regenerates and amplifies the signals. A fourth stage (D) may give a complementary value. This interface is integrated into the chip of the second digital circuit which is made of GaAs.

REFERENCES:
patent: 4663543 (1987-05-01), Sitch
patent: 4713559 (1987-12-01), Vu et al.
"Fully ECL Compatible GaAs Standard Cell Library" 8107 IEEE Journal of Solid State Circuits, Jun. 23, 1988, pp. 676-680.
"V.sub.BB Feedback Approach for Achieving ECL Compatibility in GaAs ILs" Eden et al., IEEE GaAs IC Symposium 1986, pp. 123-127.

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