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TCM1520A Datasheet(PDF) 3 Page - Texas Instruments |
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TCM1520A Datasheet(HTML) 3 Page - Texas Instruments |
3 / 7 page TCM1520A RING DETECTOR SCTS005B − OCTOBER 1984 − REVISED DECEMBER 1990 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 recommended operating conditions MIN MAX UNIT Input voltage, VIrms (f = 15.3 Hz to 68 Hz) (see Note 2) 40 150 V Operating free-air temperature, TA −40 85 °C NOTE 2: Input voltage is applied to AC INPUT (pins 1 and 8) through a series 2.2-k Ω ±10% resistor and a 0.47-µF ±10% capacitor. (see Figures 1, 4, and 5.) electrical characteristics over recommended operating free-air temperature range, RL = open, C(fltr) = 10 µF (unless otherwise noted) detector section PARAMETER TEST CONDITIONS† MIN TYP‡ MAX UNIT V(BR) CEX Collector-emitter output breakdown voltage, INVERTING OUTPUT VID ≤ 5 Vrms, IO = 5 µA 45 V VOL Low-level output voltage, INVERTING OUTPUT VID = 25 Vrms, IO = 1.6 mA 1 V VIT + Positive-going input threshold voltage 18 25 V VIT − Negative-going input threshold voltage 6 7 V Vhys Hysteresis (VIT + − VIT −) 11 V Shunt voltage, C FILTER IID = 10 mA 38 50 V VI(on) On-state input current, SCR See Note 3 50 100 V VO Output voltage, 5-V OUTPUT VID = 40 V, RL = 10 kΩ 4.25 5.75 V ZI(off) Standby input impedance VIrms = 3 V, f ≤ 20 kHz 1 M Ω Impedance when ringing VIrms = 40 V, f = 16 Hz 30 k Ω Impedance when ringing VIrms = 130 V, f = 20 Hz 20 k Ω II(on) On-state input current, SCR (see Note 4) See Note 3 55 110 mA II(hold) Input holding current, SCR See Note 3 100 µA Operating current VID = 40 V, Output open 1 1.6 mA † All characteristics are measured with a 2.2-kΩ resistor and a 0.47-µF capacitor connected at AC INPUT (pin 1) in series with the input signal, unless otherwise noted. ‡ All typical values are at TA = 25°C. NOTES: 3. These parameters are measured using pulse techniques (tw ≤ 200 µs, duty cycle ≤ 5%) with C FILTER grounded. 4. This is the input current required to turn on the SCR. switching characteristics at 25 °C operating free-air temperature, f = 20 Hz (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ton Turn-on time VIrms = 40 V 100 ms t(off) Turn-off time VIrms = 40 V 175 ms t(off) Turn-off time VIrms = 60 V to 150 V 300 ms |
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