(China (Mainland))
Product Summary
The MT3370BS is a Wide Dynamic Range DTMF Receiver. It incorporates an AGC for wide dynamic range and are suitable for end-to-end signalling. The MT3370BS provides an early steering (ESt) logic output to indicate the detection of a DTMF signal and requires external software guard time to validate the DTMF digit. The MT3370BS is used in Integrated telephone answering machine, End-to-end signalling, Fax Machines.
Parametrics
MT3370BS absolute maximum ratings: (1)DC Power Supply Voltage VDD-VSS: 6 V; (2)Voltage on any pin (other than supply) VI/O: -0.3 to 6.3 V; (3)Current at any pin (other than supply) II/O: 10 mA; (4)Storage temperature TS: -65 to 150 ℃; (5)Package power dissipation PD: 500 mW.
Features
MT3370BS features: (1)Wide dynamic range (50 dB) DTMF Receiver; (2)Call progress (CP) detection via cadence indication; (3)4-bit synchronous serial data output; (4)Software controlled guard time for MT3x70B; (5)Internal guard time circuitry for MT3x71B; (6)Powerdown option (MT317xB & MT337xB); (7)4.194304 MHz crystal or ceramic resonator(MT337xB and MT327xB); (8)External clock input (MT317xB); (9)Guarantees non-detection of spurious tones.
Diagrams
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