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TPS3126 Datasheet(PDF) 6 Page - Texas Instruments |
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TPS3126 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 22 page TPS3123-xx TPS3124-xx, TPS3125-xx TPS3126-xx, TPS3128-xx SLVS227E – AUGUST 1999 – REVISED AUGUST 2011 www.ti.com RECOMMENDED OPERATING CONDITIONS at specified temperature range. MIN MAX UNIT TA = 0°C to +85°C 0.75 3.3 VDD Supply voltage V TA = –40°C to +85°C 0.85 3.3 VDD Manual reset voltage 0.0 VDD +0.3 V VWD1 Watchdog input voltage 0 VDD +0.3 V VIH High-level input voltage 0.7 ×VDD V VIL Low-level input voltage 0.3 ×VDD V Δ t/ΔV Input transition rise and fall rate at WDI 1 μs/V TA Operating free-air temperature range 40 +85 °C ELECTRICAL CHARACTERISTICS over recommended operating free-air temperature range (unless otherwise noted). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT MR pullup resistor (internal) 27 k Ω WDI WDI = VDD = 3.3 V 1 1 IIH High-level input current μA MR MR = 0.7 × VDD, VDD = 3.3 V 20 55 WDI WDI = 0 V, VDD = 3.3 V 1 1 IIL Low-level input current μA MR MR = 0 V, VDD = 3.3 V 80 170 High-level output current TPS3126-xx, IOH VDD = VOH = 3.3 V 200 nA (leakage into RESET pin) TPS3128-xx VDD = 1.5 V, IOH = –1 mA RESET VDD = 3.3 V, IOH = –4.5 mA High-level output voltage VOH 0.8 ×VDD V (TPS3123/4/5 only) VDD = 0.75 V, IOH = –8 μA RESET VDD = 1.5 V, IOH = –1 mA VDD = 0.75 V, IOL = 15 μA RESET VDD = 1.5 V, IOL = 1.4 mA 0.2 × VDD VOL Low-level output voltage V VDD = 1.5 V, IOL = 1.4 mA RESET VDD = 3.3 V, IOL = 3 mA 0.4 TPS312xJ12 1.04 1.08 1.12 TPS312xG15 1.35 1.40 1.45 TPS312xJ18 1.56 1.62 1.68 Negative-going input threshold VIT– TPS312xL30 TA = –40°C to +85°C 2.57 2.64 2.71 V voltage (1) TPS312xE12 1.10 1.14 1.18 TPS312xE15 1.38 1.43 1.48 TPS312xE18 1.65 1.71 1.77 1 V < VIT– < 1.4 V 15 Vhys Hysteresis at VDD input 1.4 V < VIT– < 2 V 20 mV 2 V < VIT– < 3 V 30 TPS3123-xx VDD = 0.75 V 14 WDI = VDD, TPS3124-xx MR unconnected VDD = 3.3 V 22 30 TPS3128-xx IDD Supply current μA VDD = 0.75 V 14 TPS3125-xx MR unconnected TPS3126-xx (2) VDD = 3.3 V 18 25 Ci Input capacitance at MR, WDI VI = 0 V to 3.3 V 5 pF (1) To ensure best stability of the threshold voltage, a bypass capacitor (ceramic, 0.1 μF) should be placed near the supply terminal. (2) The supply current during delay time td is typical 5 μA higher. 6 Copyright © 1999–2011, Texas Instruments Incorporated |
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