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HC55150 Datasheet(PDF) 9 Page - Intersil Corporation |
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HC55150 Datasheet(HTML) 9 Page - Intersil Corporation |
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9 / 35 page  BATTERY FEED CHARACTERISTICS Constant Loop Current Tolerance 18mA ≤ IL ≤ 45mA, Forward Only • Forward Only ••• IL = 26.5mA, RLIM = 38.3kΩ Forward and Reverse (Note 27, Figure 10) 0.92IL IL 1.08IL mA Tip Open State TIPX Leakage Current S = Closed (Figure 11) - - -200 µA •••••• Tip Open State RINGX Current R1 = 0Ω, VBH = -48V, RLIM = 38.3kΩ 22.6 26.8 31 mA •••••• R1 = 2.5kΩ, VBH = -48V (Figure 11) 15.5 17.1 18.2 mA Tip Open State RINGX Voltage 5mA < IR1 < 26mA (Figure 11) - 42.8 - V •••••• Tip Voltage (Ground Start) Active State, (S Open) R1 = 150Ω (Figure 11) -5.3 -4.8 -4.3 V NA NA NA •• NA Tip Voltage (Ground Start) Active State, (S Closed) Tip Lead to •• -48V Through 7k Ω, Ring Lead to Ground Through 150 Ω (Figure 11) -5.3 -4.8 -4.3 V NA NA NA NA Open Circuit State Loop Current (Active) RL = 0Ω -20 0 20 µA •••••• LOOP CURRENT DETECTOR Programmable Threshold ILTh = (500/ RD) ≥ 5mA, 0.9ILTh ILTh 1.1ILTh mA Forward Only • Forward Only ••• Forward and Reverse ILTh = 8.5mA RD = 58.8kΩ GROUND KEY DETECTOR Ground Key Detector Threshold Tip/Ring Current Difference Tip Open 5 8 11 mA •• NA •• NA Active (Note 29, R1 = 2.5k Ω, Figure 12) 12.5 20 27.5 mA LINE VOLTAGE MEASUREMENT Pulse Width (GKD_LVM) Pulse Width = (20)(CREV.../ILIM) 0.32 0.36 0.4 ms/V NA NA NA ••• RING TRIP DETECTOR (DT, DR) Ring Trip Comparator Current Source Res = 2M Ω -2- µA •••••• Input Common-Mode Range Source Res = 2M Ω -- ±200 V •••••• Electrical Specifications TA = -40 oCto85oC, V CC = +5V ±5%, VBH = -48V, VBL = -24V, PTG = Open, RP1 =RP2 =0Ω, ZT = 120kΩ,RLIM = 38.3kΩ,RD = 50kΩ, RDC_RAC = 20kΩ, ROH = 40kΩ,CH = 0.1µF, CDC = 4.7µF, CRT/REV = 0.47µF, GND = 0V, RL = 600Ω. Unless Otherwise Specified. (•) Symbol used to indicate the test applies to the part. (NA) symbol used to indicate the test does not apply to the part. (Continued) PARAMETER TEST CONDITIONS MIN TYP MAX UNITS HC55120 HC55121 HC55130/1 HC55140/1 HC55142/3 HC55150/1 |
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