Patent ID: 11881859
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A circuit comprising:
a first transistor having a control terminal and first and second terminals, the first terminal adapted to be coupled to a first voltage supply terminal;
a second transistor having a control terminal and first and second terminals, the first terminal of the second transistor coupled to the second terminal of the first transistor;
a resistor having first and second terminals, the first terminal of the resistor adapted to be coupled to a second voltage supply terminal;
a third transistor having a control terminal and first and second terminals, the first terminal of the third transistor coupled to the second terminal of the resistor, the second terminal of the third transistor coupled to the second terminal of the second transistor, the control terminals of the first, second, and third transistors coupled together;
a fourth transistor having a control terminal and first and second terminals, the control terminal of the fourth transistor coupled to the second terminals of the second and third transistors, the first terminal of the fourth transistor coupled to the second terminal of the resistor and to the first terminal of the third transistor, the second terminal of the fourth transistor coupled to the first terminal of the first transistor; and
a clamp circuit having a first terminal coupled to the first terminal of the first transistor and having a second terminal coupled to the second terminal of the first transistor.