tp5089 National Semiconductor Corporation, tp5089 Datasheet
tp5089
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tp5089 Summary of contents
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... TP5089 DTMF (TOUCH-TONE) Generator General Description The TP5089 is a low threshold voltage field-implanted met- al gate CMOS integrated circuit It interfaces directly to a standard telephone keypad and generates all dual tone mul- ti-frequency pairs required in tone-dialing systems The tone synthesizers are locked to an on-chip reference oscillator ...
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Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage ( Maximum Voltage at Any Pin ...
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... Connection Diagram Dual-In-Line Package Top View Order Number TP5089N See NS Package N16A Pin Descriptions Symbol Description V This is the positive voltage DD supply to the device referenced to V The collector of the SS TONE OUT transistor is connected to this pin V This is the negative voltage SS supply All voltages are ...
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Functional Description (Continued) TABLE I Output Frequency Accuracy Tone Valid Group Input Low R1 Group High C1 Group SINGLE TONE TONE INHIBIT DISABLE ...
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... National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications Molded Dual-In-Line Package (N) Order Number TP5089N NS Package N16A 2 A critical component is any component of a life ...