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US 6,211,694 B1Granted
Bus driver having noise removing circuit
AssigneeNEC Corporation
InventorHiroshi Kamiya
Life of this patent
Estimating the term…
Abstract
In a bus driver for driving a bus having an input terminal for receiving an input signal and an output terminal connected to the bus, a switching element is provide between the output terminal and the second power supply terminal, and the switching element is controlled by a voltage at the input terminal. A diode and a resistor are connected in series between the first power supply terminal and the output terminal. The diode is arranged in a forward conduction direction with respect to the first and second power supply terminals.
Claims22
A bus driver for driving a bus, comprising:
- first and second power supply terminals;
- an input terminal for receiving an input signal;
- an output terminal connected to said bus;
- a switching element, connected between said output terminal and said second power supply terminal, said switching element being controlled by a voltage at said input terminal;
- and
- a noise removing circuit comprising a first diode and a first resistor, connected in series between said first power supply terminal and said output terminal, reducing a ringing effect on said bus,
- wherein said first diode is arranged in a forward conduction direction with respect to current flow between said first and second power supply terminals through said first diode, and
- wherein said switching element comprises an open-drain type MIS transistor having a drain connected to said output terminal.
5 more elements
A bus driver for driving a bus, comprising:
- first and second power supply terminals;
- an input terminal for receiving an input signal;
- an output terminal connected to said bus;
- a switching element, connected between said output terminal and said second power supply terminal, said switching element being controlled by a voltage at said input terminal;
- and
- a noise removing circuit comprising a first diode and a first resistor, connected in series between said first power supply terminal and said output terminal, reducing a ringing effect on said bus,
- wherein said first diode is arranged in a forward conduction direction with respect to current flow between said first and second power supply terminals through said first diode, and
- wherein said switching element comprises an open-collector type bipolar transistor having a collector connected to said output terminal.
5 more elements
A bus driver for driving a bus, comprising:
- a first power supply terminal for receiving a first voltage;
- a second power supply terminal for receiving a second voltage lower than said first voltage;
- an input terminals;
- an output terminal;
- a MIS transistor having a gate connected to said input terminal, a drain connected to said output terminal and a source connected to said second power supply terminal;
- a first diode having an anode connected to said output terminal and a cathode;
- and
- a first resistor connected between said first power supply terminal and the cathode of said first diode,
- wherein said first diode and said first resistor reduce a ringing effect on said bus.
6 more elements
A bus driver for driving a bus, comprising:
- a first power supply terminal for receiving a first voltage;
- a second power supply terminal for receiving a second voltage lower than said first voltage;
- an input terminal;
- an output terminal;
- a MIS transistor having a gate connected to said input terminal, a drain connected to said output terminal and a source connected to said second power supply terminal;
- a first diode having a cathode connected to said first power supply terminal and an anode;
- and
- a resistor connected between the anode of said first diode and said output terminal,
- wherein said first diode and said first resistor reduce a ringing effect on said bus.
6 more elements
A bus driver for driving a bus, comprising:
- a first power supply terminal for receiving a first voltage;
- a second power supply terminal for receiving a second voltage lower than said first voltage;
- an input terminal;
- an output terminal;
- a bipolar transistor having a base connected to said input terminal, a collector connected to said output terminal and an emitter connected to said second power supply terminal;
- a first diode having an anode connected to said output terminal and a cathode;
- and
- a first resistor connected between said first power supply terminal and the cathode of said first diode,
- wherein said first diode and said first resistor reduce a ringing effect on said bus.
6 more elements
A bus driver for driving a bus, comprising:
- a first power supply terminal for receiving a first voltage;
- a second power supply terminal for receiving a second voltage lower than said first voltage;
- an input terminal;
- an output terminal;
- a bipolar transistor having a base connected to said input terminal, a collector connected to said output terminal and an emitter connected to said second power supply terminal;
- a first diode having a cathode connected to said first power supply terminal and an anode;
- and
- a resistor connected between the anode of said first diode and said output terminal,
- wherein said first diode and said first resistor reduce a ringing effect on said bus.
6 more elements
Dependencies are inferred from the claim text.