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need help building a radio remote control using DTMF

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i have the schematics and components of making the remote control that will control 4 devices using DTMF as the control codes.(circuit at www.freeelectroniccircuits.com).the transmitter consists of a DTMF generator (IC UM91214B) and an fm transmitter.
i just couldnt find that IC anywhere, i please would like to know if the IC tp5089 could replace it,since it is also a DTMF generator.kindly assist if you can.thank you
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