mk5087 ETC-unknow, mk5087 Datasheet
mk5087
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mk5087 Summary of contents
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THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS ...
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... Frequency and amplitude stability over operating voltage and temperature range are maintained within industry specifications. FEATURES Pin-for-Pin Replacement for MK5087 Low Standby Power Minimum External Parts Count 3.5V to 10V Operatlon 2-of-8 Keyboard or Calculator-Type Single Contact (Form ...
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MV5087 ABSOLUTE MAXIMUM RATINGS Voltage on any pin Current on any pin Operating temperature Storage temperature DC ELECTRICAL CHARACTERISTICS Test conditions (unless othenwise stated + 3.5V to 10V amb DD ...
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PIN FUNCTIONS PIN NAME XMITR 3,4,5,9 Column 1 7,8 OSC In, OSC Out 10 Mute 11,12,13,14 Row 1-4 15 Single Tone Inhibit 16 Tone Out ROW AND COLUMN INPUTS These inputs are compatible with the ...
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MV5087 OUTPUT FREQUENCY Table 1 shows the output frequency deviation from the standard DTMF frequencies when a 3.58MHz crystal is used as the reference. The row and column output waveforms are digitally synthesised using R-2R D-to-A converters (see Fig.6), resulting ...
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COL 1 COL 2 COL 3 COL 4 ROW ROW ROW ROW Figure 7: Connection diagram V DD SINGLE TONE ...