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TPS3305-18DRG4 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS3305-18DRG4 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 18 page www.ti.com MR t t t t V (nom) V IT - SENSEn WDI RESET 0 1 0 1 0 1 t t(out) t d t d t d t d RESETbecauseofWDI RESETbecauseof MR RESETbecauseofSENSEbelowV IT - RESETbecauseofSENSEbelowV IT - RESETbecause ofSENSEbelowV IT - TIMING REQUIREMENTS SWITCHING CHARACTERISTICS TPS3305 SLVS198C – DECEMBER 1998 – REVISED MARCH 2008 TIMING DIAGRAM At VDD = 2.7V to 6V, RL = 1MΩ, CL = 50pF, and TJ = +25°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SENSEn VSENSEnL = VIT– –0.2V, VSENSEnH = VIT+ +0.2V 6 µs tw Pulse width MR 100 ns VIH = 0.7 × VDD, VIL = 0.3 × VDD WDI 100 ns At VDD = 2.7V to 6V, RL = 1MΩ, CL = 50pF, and TJ = +25°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VI(SENSEn) ≥ VIT+ +0.2V, MR ≥ 0.7 × tt(out) Watchdog time-out VDD 1.1 1.6 2.3 s See Timing Diagram VI(SENSEn) ≥ VIT+ +0.2V, MR ≥ 0.7 × VDD td Delay time 140 200 280 ms See Timing Diagram Propagation (delay) time, MR to RESET, VI(SENSEn) ≥ VIT+ +0.2V, tPHL 200 500 ns high-to-low level output MR to RESET VIH = 0.7 × VDD, VIL = 0.3 × VDD Propagation (delay) time, MR to RESET, VI(SENSEn) ≥ VIT+ +0.2V, tPLH 200 500 ns low-to-high level output MR to RESET VIH = 0.7 × VDD, VIL = 0.3 × VDD Propagation (delay) time, SENSEn to RESET, VIH = VIT+ +0.2V, VIL = VIT– –0.2V, tPHL 1 5 µs high-to-low level output SENSEn to RESET MR ≥ 0.7 × V DD Propagation (delay) time, SENSEn to RESET, VIH = VIT+ +0.2V, VIL = VIT– –0.2V, tPLH 1 5 µs low-to-high level output SENSEn to RESET MR ≥ 0.7 × V DD 4 Submit Documentation Feedback Copyright © 1998–2008, Texas Instruments Incorporated Product Folder Link(s): TPS3305 |
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