Description
www.DataSheet4U.com ZL49010/1, ZL49020/1, ZL49030/1 Wide Dynamic Range DTMF Receiver Data Sheet .
The ZL490xx is a family of high performance DTMF receivers which decode all 16 tone pairs into a 4-bit binary code.
Features
* Wide dynamic range (50dB) DTMF Receiver Call progress (CP) detection via cadence indication 4-bit synchronous serial data output Software controlled guard time for ZL490x0 Internal guard time circuitry for ZL49
Applications
* Integrated telephone answering machine End-to-end signalling Fax Machines
-40 ° C to +85° C signal and requires external software guard time to validate the DTMF digit. The ZL490x1, with preset internal guard times, uses a delay steering (DStD) logic output to indicate
