Standard No.:	GB/T 14027.4-1992
English Name:	Series and products of communication circuits for semiconductor integrated circuits-Products of dual-tone multi-frequency circuits
Chinese Name:	半导体集成电路通信电路系列和品种 双音多频电路系列品种
Chinese Classification:	L56    Semiconductor integrated circuit
Professional Classification:	GB    National Standard
Issued by:	MIIT
Issued on:	1992-01-02
Implemented on:	1993-8-1
Status:	abolished
Abolished on:	2005-10-14
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	150.00
Delivery:	via email in 1~3 business day

本标准规定了半导体集成电路双音多频（DTMF）电路（以下简称器件）的引出端排列、功能框图和主要电参数。器件的质量评定应符合器件详细规范的规定。本标准适用于生产（研制）或使用器件时的选型。