Bidirectional line driver

Details Bidirectional line driver Bidirectional line driver

1975-06-26

1977-01-18

Robinson, Thomas A.

Telegraphy

Repeaters

Using transistors

H04L 2520

Patent

active

040040917

ABSTRACT:
A bidirectional line driver circuit for transmitting logic signals on a highly capacitive, or low impedance transmission line makes use of a tandem connection of switching means for providing a low impedance connection from the output of the driver circuit to either a first power supply voltage or a second power supply voltage to define transmitted logic levels. Coupled to the tandem switching means is a buffered feedback circuit which responds to conduction of the first switching means connected to the first power supply voltage such that nonconduction is produced in the second switching means connected to the second power supply voltage. A buffer transistor is incorporated in the feedback circuit to insure that this response occurs without significant loading of the output terminal thus eliminating the possibility of oscillation and providing for very high speed switching performance.

REFERENCES:
patent: 2937236 (1960-05-01), Kundrotas
patent: 3179747 (1965-04-01), Grace et al.

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