TTL Fundamental logic circuit

Details TTL Fundamental logic circuit TTL Fundamental logic circuit

1982-06-16

1984-09-11

Anagnos, Larry N.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307303, 307443, 307567, H03K 19088, H03K 19013

Patent

active

044712391

ABSTRACT:
A TTL fundamental logic circuit comprising an npn-type input transistor, an npn-type output transistor, and a pnp-type output transistor. The pnp-type output transistor has an emitter connected to the collector of the npn-type output transistor, a base connected to the base of the npn-type output transistor and a collector that is grounded. The pnp-type output transistor is turned on when the npn-type output transistor is turned off, thereby the potential of the high level output signal is decreased, and the propagation delay of the fundamental logic circuit is reduced.

REFERENCES:
patent: 3631309 (1971-12-01), Myers
patent: 3676713 (1972-07-01), Wiedmann
patent: 3699362 (1972-10-01), Jordan
patent: 3769530 (1973-10-01), Kalb et al.
patent: 4001868 (1977-01-01), Liang
patent: 4194132 (1980-03-01), Mrazek

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