Patent ID: 11863355
Assignee: ARONIX LLC
Field: Medical technology (Instruments)
Classification: CPC A  H  B | IPC A  H

Claim 9:
10. A fail-safe differential receiver having latchable control signal interrupt capability comprising:
a differential amplifier comprises a receiver output and receives an IN+ input, and an IN− input;
a first combining gate receives the receiver output, a control signal, and generates a Vout output;
a first reference voltage;
a first comparator receives the IN+ input and the first reference voltage, and generates a first compare signal;
a second comparator receives the IN− input and the first reference voltage, and generates a second compare signal;
a second combining gate receives the first compare signal and the second compare signal, and generates a third compare signal;
a second reference voltage;
a third comparator receives the IN+ input and the second reference voltage, and generates a fourth compare signal;
a fourth comparator receives the IN− input and the second reference voltage, and generates a fifth compare signal;
a third combining gate receives the fourth compare signal and the fifth compare signal, and generates a sixth compare signal;
a fourth combining gate receives the third compare signal and the sixth compare signal, and generates a seventh compare signal; and
a latch receives the seventh compare signal and generates the control signal, the control signal transitions between a normal operating state and a fault condition state;, wherein the receiver output is applied to the Vout output as long as the control signal is in the normal operating state, and on first occurrence of the fault condition state the latch latches blocking the receiver output from being applied to the Vout output until the latch is reset.