DTMF receiver
Source: InternetPublisher:XBwl0eYS Keywords: DTMF receiver Updated: 2026/02/27
DTMF receiver
Today, most telephone devices use DTMF receiver ICs. A common DTMF receiver IC is the Motorola MT8870, which is widely used in electronic communication circuits. The MT8870 is an 18-pin IC. It is used in telephones and various other applications. In projects using this IC, engineers or technicians need to test the IC individually when the correct output cannot be obtained. Quickly testing this IC can save research labs and the communications instrument manufacturing industry a significant amount of time. Here is a small and convenient tester circuit for DTMF ICs.
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