TTL buffer circuit with active turn-off

Details TTL buffer circuit with active turn-off TTL buffer circuit with active turn-off

1989-04-17

1990-03-27

James, Andrew J.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307263, 307546, 307547, H03K 19088, H03K 1920

Patent

active

049123416

ABSTRACT:
A TTL buffer circuit includes an active turn-off means so as to provide faster output transitions without using excess power dissipation. The active turn-off means is formed of a Schottky diode (D402), a resistor (R417), and a Schottky bipolar transistor (Q414) which causes rapid switching of a pull-down transistor (Q413), thereby increasing the speed of the output transitions.

REFERENCES:
patent: 4593210 (1986-06-01), Boyer

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