Transistor logic tristate output with feedback

Details Transistor logic tristate output with feedback Transistor logic tristate output with feedback

1979-01-24

1981-03-10

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307299B, 307454, H03K 19013, H03K 19084, H03K 19088

Patent

active

042556708

ABSTRACT:
A TTL transistor logic tristate output device particularly suitable for common bus applications including transistor and diode means for feedback of a portion of current from any output load and from stray capacitances to drive the pulldown element to greater conduction and accelerate sinking of current from the output to ground during transition at the output from high to low potential, said transistor means also arranged to block paths from the output to ground through the enable gate when the output is in the high impedance third state. Means for blocking current flow from the output through the device to high potential is also described.

REFERENCES:
patent: 4081695 (1978-03-01), Allen et al.
Military Specification Microcircuits Mil-M-38510/309A (USAF), Jan. 4, 1978, pp. 44-71.
Low Power Schottky Data Book, "Circuit Characteristics," pp. 2-3 thru 2-7, copyright 1977, Fairchild Camera and Instrument Corp.

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