US 2018/0323785 A1 · REPEATER FOR AN OPEN-DRAIN COMMUNICATION SYSTEM USING A CURRENT DETECTOR AND A CONTROL LOGIC CIRCUIT

Abstract

This disclosure generally relates to repeaters, and, in particular, repeaters for open-drain systems. In one embodiment, an apparatus comprises a first port, a second port, a current detector, a transistor, and a control logic circuit. A current detector input of the current detector is coupled to the first port. A transistor channel electrode of the transistor is coupled to the second port. A control logic circuit input of the control logic circuit is coupled to the current detector output, and a control logic circuit output of the control logic circuit is coupled to a transistor control electrode of the transistor.

Claims19

Dependent claims

An apparatus, comprising:

a first port;
a second port;
a first transistor comprising:
a first transistor channel electrode coupled to the first port;
and
a first transistor channel electrode;
a second transistor comprising:
a second transistor control electrode;
and
a second transistor channel electrode coupled to the second port;
a current source coupled to the first port;
a current detector comprising:
a current detector input coupled to the first port, the current source, and the first transistor channel electrode;
and
a current detector output;
a control logic circuit comprising:
a control logic circuit input coupled to the current detector output;
and
a control logic circuit output coupled to the second transistor control electrode.

16 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/875,573Filed 19 Jan 2018

Priority

3 May 2017

Published

8 Nov 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

H03K 19/0008
Logic circuits, i.e. having at least two inputs acting on one output ; Inverting circuits: arrangements for reducing power consumption
G01R 31/3004
Marginal testing, e.g. by varying supply voltage: current or voltage test
H03K 19/0185
Coupling arrangements; Interface arrangements: using field effect transistors only
G06F 13/4282
Bus transfer protocol, e.g. handshake; Synchronisation: on a serial bus, e.g. I2C bus, SPI bus

Repeater for an open-drain communication system using a current detector and a control logic circuit

Life of this patent

Repeater for an open-drain communication system using a current detector and a control logic circuit

Life of this patent

Abstract

Claims19