本标准定义了基于1.2 V（标称）电源电平的数字逻辑器件的直流接口、开关参数和测试负载。其目的是为均匀性、源的多样性、消除混淆、设备规范的易用性和易用性提供标准规范。

This standard defines dc interface, switching parameters and test loading for digital logic devices based on 1.2 V (nominal) power supply levels. The purpose is to provide a standard specification for uniformity, multiplicity of sources, elimination of confusion, ease of device specification, and ease of use.