Method and apparatus for improving a load independent buffer

摘要

Described herein are apparatus, system, and method for reducing electrical over-stress of transistors and for generating an output with deterministic duty cycle for load independent buffers. The apparatus comprises a feedback capacitor electrically coupled between an input terminal and an output terminal of a buffer; and a switch, electrically parallel to the feedback capacitor and operable to electrically short the feedback capacitor in response to a control signal, wherein the switch causes a deterministic voltage level on the input terminal.

主权项

1. An apparatus comprising:
an input-output (I/O) transmitter and receiver circuit to couple to a terminal of bi-directional signal line, comprising:
a feedback capacitor electrically coupled between an input terminal and an output terminal of a transmit buffer, wherein the output terminal of the transmit buffer is coupled to the terminal of the bi-directional signal line;a switch electrically parallel to the feedback capacitor;a receiver circuit having an input electrically coupled to the terminal of the bi-directional signal line; anda logic unit electrically coupled to the switch, wherein the logic unit is operable to cause the switch to electrically short the feedback capacitor in response to determining whether the transmit buffer is driving data on the terminal of the bi-directional signal line, or whether a receiver is enabled to receive data from the terminal of the bi-directional signal line.