Patent ID: 11901900
Assignee: STMICROELECTRONICS INTERNATIONAL N.V.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. An integrated circuit, comprising:
an input pad;
a Schmitt trigger coupled to the input pad and including:
a first inverter having:
a first main transistor branch including a first transistor of a first conductivity type; and
a second main transistor branch including a second transistor of a second conductivity type opposite of the first conductivity type coupled to the first transistor at an intermediate node of the Schmitt trigger;

a second inverter having:
an input coupled to the intermediate node; and
an output corresponding to an output of the Schmitt trigger; and

a charging assistance circuit coupled to the intermediate node and including:
a parallel transistor branch of the first conductivity type coupled between a supply voltage and the intermediate node;
a pass transistor coupled between the input pad and the parallel transistor branch;
a switching storage element coupled to a gate terminal of the pass transistor; and
a control and reset circuit coupled to the switching storage element, the pass transistor, and the parallel transistor branch.