IC input buffer emitter follower with current source value depen

Details IC input buffer emitter follower with current source value depen IC input buffer emitter follower with current source value depen

1985-12-27

1987-06-23

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307200A, 307443, 307475, 307591, 307296R, 307303, H03K 19013

Patent

active

046755551

ABSTRACT:
In a semiconductor device including a plurality of input signal pads (P.sub.0, . . . , P.sub.7); a plurality of emitter followers (Q.sub.01, . . . , Q.sub.71) are connected to the input signal pads (P.sub.0, . . . , P.sub.7); a plurality of input signal buffers (BUF.sub.0, . . . , BUF.sub.7) are connected to the emitter followers (Q.sub.01, . . . , Q.sub.71); and a plurality of constant current sources (I.sub.01, . . . , I.sub.71) are connected to the emitter followers (Q.sub.01, . . . , Q.sub.71). The emitter followers (Q.sub.01, . . . , Q.sub.71) are in proximity to the input signal pads (P.sub.0, . . . , P.sub.7), and the constant current sources (I.sub.0, . . . , I.sub.7) are in proximity to the emitter followers (Q.sub.01, . . . , Q.sub.71) . The current values of the constant current sources (I.sub.01, . . . , I.sub.71 ) are determined in accordance with the length of the corresponding connections between the emitter followers (Q.sub.01, . . . , Q.sub.71) and the input signal buffers (BUF.sub.0, . . . , BUF.sub.7).

REFERENCES:
patent: 3573489 (1971-04-01), Sramek
patent: 3860836 (1975-01-01), Pedersen
patent: 4347446 (1982-08-01), Price
patent: 4359653 (1982-11-01), Takamasa
patent: 4435654 (1984-03-01), Koide
patent: 4593211 (1986-06-01), Belforte

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