IEC 60748-2-20:20 08旨在给出各种值集合的DC接口规范，其中每个值集合包括电源电压的标称值、其容差以及低压集成电路的输入和输出电压的最坏情况极限值。第二版取消并取代了2000年出版的第一版。本版构成技术修订版。 与上一版相比，此版本包含以下重大变更: -电源电压扩展至标称1.0 V -增加施密特触发器输入规范。

IEC 60748-2-20:2008 aims at giving DC interface specifications for various sets of values, where each comprises the nominal value of power supply voltage, its tolerance, and the worst-case limit values of the input and output voltages for low voltage integrated circuits. This second edition cancels and replaces the first edition published in 2000. This edition constitutes a technical revision. This edition includes the following significant changes with respect to the previous edition:
- Expansion of power supply voltages down to nominal 1,0 V
- Addition of Schmitt-trigger input specification.