This document is an application note (AN-5006) from Fairchild Semiconductor regarding their CROSSVOLT LVT series devices. It introduces the concept of bus-holding as a method to solve floating input problems without requiring external components like pull-up or pull-down resistors. The text explains that these circuits maintain a valid logic state at un-driven inputs, preventing oscillation and protecting data integrity in systems where inputs may float. This manual is written in Chinese.
The minimum drive current required to change the state of a bus-hold input is defined as 500 microamps.
It is not recommended to use bus-hold circuits together with regulation resistors as it may cause high power consumption and switching difficulties.