Balanced line driver for local area networks or the like

Details Balanced line driver for local area networks or the like Balanced line driver for local area networks or the like

1991-12-18

1994-02-08

Kuntz, Curtis

Pulse or digital communications

Repeaters

Testing

307270, H04B 300

Patent

active

052854779

ABSTRACT:
A differential line driver with small common mode shift when going inactive. Two pairs of serially coupled switches diagonally switch when sending data. All switches close when the driver is disabled, the common mode output voltage being established by resistors serially disposed between the pairs of switches and the power source therefore.

REFERENCES:
patent: 4121118 (1978-10-01), Miyazaki
patent: 4337465 (1982-06-01), Spracklen et al.
patent: 4445222 (1984-04-01), Smitt
patent: 4615039 (1986-09-01), Li et al.
patent: 5012384 (1991-04-01), Chew
patent: 5077756 (1991-12-01), Christophersen
"International Standard", ISO 8802-3 ANSI/IEEE Std. 802.3, First Edition 1989-02-24, pp. 92-99.
"A CMOS Ethernet Serial Interface Chip", Digest of Technical Papers, ISSCC 84/Thursday, Feb. 23, 1984/Imperial Ballroom/ THAM 13.1 pp. 184 and 185.
"10 MB/S Twisted Pair CMOs Transceiver with Transmit Waveform Pre-Equalization" IEEE 1991 Custom Integrated Circuits Conference, Cheng-chung Shih, Joe Heideman, Haim Shafir, Stefan Wurster, pp. 7.3.1 to 7.3.4.

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