High impedance current mode voltage scalable driver

摘要

A high impedance current mode voltage scalable driver allows signals from a higher supply voltage platform to transition to lower supply platforms. The scalable driver uses a current source to provide high impedance onto a load coupled to the driver. The driving of the load by the current source is controlled by symmetrical switches which are operated by the transition of the input signal. The driver utilizes voltage scaling to allow a particular higher supply voltage platform to transition to a variety of lower supply voltage platforms.