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MC34017 2 MOTOROLA ANALOG IC DEVICE DATA MAXIMUM RATINGS (Voltages Referenced to RG, Pin 7) Rating Symbol Value Unit Operating AC Input Current (Pins 1, 8) – 20 mA, RMS Transient Input Current (Pins 1, 8) (T<2.0 ms) Vin ± 300 mA, peak Voltage Applied at RC (Pin 6) VRC 5.0 V Voltage Applied at RS (Pin 5) VRS 5.0 V Voltage Applied to Outputs (Pins 2, 3) VO –2.0 to VRI V Power Dissipation (@ 25 ° C) PD 1.0 W Operating Ambient Temperature TA –20 to +60 ° C Storage Temperature Tstg –65 to +150 ° C NOTE: ESD data available upon request. ELECTRICAL CHARACTERISTICS (TA = 25 ° C) Characteristic Test Symbol Min Typ Max Unit Ringing Start Voltage Vdc VStart = VI at Ring Start VI > 0 1a VStart (+) 34 37.5 41 VI < 0 1b VStart (–) –34 –37.5 –41 Ringing Stop Voltage 1c VStop Vdc VStop = VI at Ring Stop MC34017–1 14 16 22 MC34017–2 12 14 20 MC34017–3 14 16 22 Output Frequencies (VI = 50 V) 1d Hz MC34017–1 High Tone fH 937 1010 1083 MC34017–1 Low Tone fL 752 808 868 MC34017–1 Warble Tone fW 11.5 12.5 14 MC34017–2 High Tone fH 1874 2020 2166 MC34017–1 Low Tone fL 1504 1616 1736 MC34017–1 Warble Tone fW 11.5 12.5 14 MC34017–3 High Tone fH 937 1010 1083 MC34017–1 Low Tone fL 752 808 868 MC34017–1 Warble Tone fW 23 25 28 Output Voltage (VI = 50 V) 6 VO 34 37 43 Vpp Output Short–Circuit Current 2 IRO1, IRO2 35 60 80 mApp Input Diode Voltage (II = 5.0 mA) 3 VD 5.4 6.2 6.8 Vdc Input Voltage – SCR “Off” (II = 30 mA) 4a Voff 30 38 43 Vdc Input Voltage – SCR “On” (II = 100 mA) 4b Von 3.2 4.1 6.0 Vdc RS Clamp Voltage (VI = 50 V) 5 Vclamp 1.3 1.5 1.8 Vdc PIN FUNCTION DESCRIPTION Pin Symbol Description 1, 8 AC1, AC2 The input terminals to the full–wave diode bridge. The ac ringing signal from the telephone line energizes the 5 RS The input of the threshold comparator to which diode bridge current is mirrored and sensed through an external 4 RI The positive supply terminal for the oscillator, frequency divider and output buffer circuits. 2, 3 RO1, RO2 The tone ringer output terminals through which the sound element is driven. 7 RG The negative terminal of the diode bridge and the negative supply terminal of the tone generating circuitry. 6 RC The oscillator terminal for the external resistor and capacitor which control the tone ringer frequencies (R2, C2). |