公开(公告)号：US09647660B1

公开(公告)日：2017-05-09

申请号：US15230247

申请日：2016-08-05

Applicant: ARM Limited

Inventor： Akhtar Waseem Alam ,  Ashwani Kumar Srivastava ,  Kunal Girish Bannore

IPC: H03L5/00 ,  H03K19/003 ,  H03K3/356 ,  H03K19/0185

CPC classification number: H03K19/00361 ,  H03K3/356113 ,  H03K19/018521

Abstract: Apparatus for converting a first input signal from a first voltage domain to an output signal for a second voltage domain, the apparatus configured to operate within the first voltage domain or within the second voltage domain. The apparatus comprising input driver circuitry configured to generate second input signal based on the first input signal and a control signal received by input driver circuitry. The apparatus also comprising selection circuitry configured to generate a selection signal based on the control signal. The apparatus also comprising cross-coupled circuitry configured to generate a level-shifted signal at an intermediate node based on the first input signal, the second input signal, and the selection signal. The cross-coupled circuitry comprises a first pair of parallel transistors and a second pair of parallel transistors. The apparatus further comprising output driver circuitry configured to generate output signal for the second voltage domain based on the level-shifted signal.