本标准提供了一个新接口的灵活性，该接口规定了EIA/TIA-562电气特性，尽管这些电气特性与EIA-232-D电气特性相互作用， 具有更高的数据信号传输速率，并由+/-5伏电源驱动。EIA/TIA-574适用于采用串行二进制数据交换的DTE和DCE互连，其中需要最少数量的控制和信息电路。本标准还提供了错误引用问题的解决方案。

This Standard provides the flexibility of a new interface which specifies EIA/TIA-562 Electrical Characteristics which, although they are interworkable with EIA-232-D Electrical Characteristics, are capable of higher data signaling rates and being driven from a +/-5 volt supply. EIA/TIA-574 is applicable to the interconnection of DTE and DCE employing serial binary data interchange where a minimal number of control and information circuits are required. This Standard also provides a solution to the problem of incorrect referencing.