Back to results
US 2006/0132173 A1Published application
Over-voltage tolerant bus hold circuit and method therefor
AssigneeSemiconductor Components Industries, LLC
InventorsFrank Dover, Senpeng Sheng
Life of this patent
Estimating the term…
Abstract
In one embodiment a bus hold circuit decouples an inverter of the bus hold circuit from an operating voltage responsively to an input receiving a signal having a voltage that is approximately equal to or greater than the value of the operating voltage.
Claims20
A method of forming an over-voltage bus hold circuit comprising:
- coupling a first inverter and a second inverter as a latch;
- configuring a switch to operably couple an operating voltage to the second inverter responsively to a signal input of the first inverter receiving an input signal that is approximately less than a value of the operating voltage;
- and
- configuring the switch to operably decouple the operating voltage from the second inverter responsively to the signal input of the first inverter receiving an input signal that is approximately no less than the value of the operating voltage.
1 more element
A method of operating a bus hold circuit comprising:
- receiving an input signal having a voltage value that is approximately no less than an operating voltage of the bus hold circuit;
- coupling the input signal to an output of a first inverter;
- and
- selectively disabling a switch to decouple the first inverter from the operating voltage.
1 more element
An over-voltage bus hold circuit comprising:
- a first inverter having an signal input, a signal output, and an operating voltage input;
- a switch operably coupled between the operating voltage input of the first inverter and an operating voltage terminal that is configured for receiving an operating voltage, the switch having a control input;
- and
- a control circuit configured to enable the switch responsively to the signal output receiving a signal having a value that is approximately no less than the operating voltage.
1 more element
Dependencies are inferred from the claim text.