M-8870-01SM
M-8870-01SM Datasheet
M-8870
| Part | Datasheet |
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M-8870-01SM |
M-8870-01SM (pdf) |
| Related Parts | Information |
|---|---|
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M-8870-02 |
M-8870-02 |
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M-8870-01 |
M-8870-01 |
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M-8870-01SMTR |
M-8870-01SMTR |
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M-8870-02SMTR |
M-8870-02SMTR |
| PDF Datasheet Preview |
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| Features • Low Power Consumption • Adjustable Acquisition and Release Times • Central Office Quality and Performance • Power-down and Inhibit Modes -02 only • Inexpensive MHz Time Base • Single 5 Volt Power Supply • Dial Tone Suppression Applications • Telephone switch equipment • Remote data entry • Paging systems • Personal computers • Credit card systems Pin Configuration Block Diagram M-8870 DTMF Receiver The M-8870 is a full DTMF Receiver that integrates both bandsplit filter and decoder functions into a single 18-pin DIP or SOIC package. Manufactured using CMOS process technology, the M-8870 offers low power consumption 35 mW max and precise data handling. Its filter section uses switched capacitor technology for both the high and low group filters and for dial tone rejection. Its decoder uses digital counting techniques to detect and decode all 16 DTMF tone pairs into a 4-bit code. External component count is minimized by provision of an on-chip differential input amplifier, clock generator, and latched tri-state interface bus. Minimal external components required include a low-cost MHz color burst crystal, a timing resistor, and a timing capacitor. The M-8870-02 provides a “power-down” option which, when enabled, drops consumption to less than mW. The M-8870-02 can also inhibit the decoding of fourth column digits see Tone Decoding table on page Ordering Information Part # M-8870-01 Description 18-pin plastic DIP M-8870-01SM 18-pin plastic SOIC M-8870-01SMTR 18-pin plastic SOIC, tape and reel M-8870-02 18-pin plastic DIP, power-down, option M-8870-02SM 18-pin plastic SOIC, power-down, option M-8870-02T 18-pin plastic SOIC, power-down option, tape and reel DS-M8870-R3 M-8870 Absolute Maximum Ratings Parameter Value Power supply voltage VDD - VSS VDD V max Voltage on any pin VDC VSS VDD Current on any pin 10 mA max Operating temperature -40°C to + 85°C Storage temperature TS -65°C to + 150°C Note Exceeding these ratings may cause permanent damage. Functional operation under these conditions is not implied. Absolute Maximum Ratings are stress ratings. Stresses in excess of these ratings can cause permanent damage to the device. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this data sheet is not implied. Exposure of the device to the absolute maximum ratings for an extended period may degrade the device and effect its reliability. DC Characteristics Parameter Operating supply voltage Operating supply current Standby supply current see Note 3 Power consumption Low level input voltage High level input voltage Input leakage current Pullup source current on OE Input impedance, signal inputs 1, 2 Steering threshold voltage Low level output voltage High level output voltage Output low sink current Output high source current Output voltage VREF Output resistance VREF IDDQ IIH/IIL VTSt VDD - VREF *Typical figures are at 25°C and are for design aid only not guaranteed and not subject to production testing. Units V mA µA mW V µA µA V mA V Test Conditions PD=VDD f = MHz, VDD = V VIN = VSS or VDD see Note 2 OE = 0 V 1 kHz No load No load VOUT = V VOUT = VDD - V No load - |
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