System und Verfahren zur Handhabung von E/a-Zellenstrominjektionsfehlern

Details

Veröffentlichungs-Nr.

EP4761114

Anmeldetag

9. Dezember 2025

Veröffentlichung

17. Juni 2026

Rechtsraum

EP

IPC

H03K19/003, H03K19/0185

Abstract

An integrated circuit is provided with a signal node/IO pad in an output buffer that is protected by a current injection protection circuit which includes first and second comparators connected between a first voltage supply and a second voltage supply to generate first and second control signals in response to, respectively, a positive or negative injected current at the signal node, and which also includes a pre-driver stack of transistors which generate, respectively, a positive gate control signal and negative gate control signal, and which also includes a multiplex selection circuit connected to output the positive gate control signal and negative gate control signal to the output buffer to clamp signal node to a first clamped voltage if a voltage on the signal node exceeds the first supply voltage or to a second clamped voltage if a voltage on the signal node falls below the second supply voltage.

Anmelder

Firma

NXP USA, Inc.

Land

🇺🇸 USA