Patent ID: 11923855
Assignee: STMICROELECTRONICS INTERNATIONAL N.V.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. An integrated circuit, comprising:
a supply voltage selector configured to receive a selection signal and to output a supply either a high supply voltage or a low supply voltage as a supply voltage responsive to the selection signal;
a reference voltage generator configured to generate a reference voltage based on the supply voltage; and
a Schmitt trigger configured to receive the supply voltage, the reference voltage, and an input voltage, the Schmitt trigger including:
an main input;
a first inverter;
a second inverter coupled to the first inverter;
a control signal generator coupled between the input and the first inverter and configured to generate a control signal based on the input voltage; and
a pull-up transistor having a first terminal coupled to an input of the second inverter and a second terminal configured to receive the control signal.