DESCRIPTION The 75T204 is a complete Dual-Tone Mu.
TDK
75T204 - 5V Low-Power Subscriber DTMF Receiver
DESCRIPTION The 75T204 is a complete Dual-Tone Multifrequency (DTMF) receiver that detects 16 standard digits. No front-end pre-filtering is needed.
Silicon Systems
SSI75T204 - 5V Low Power DTMF Receiver
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