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TPS3800G27DCK Datasheet(PDF) 4 Page - Texas Instruments |
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TPS3800G27DCK Datasheet(HTML) 4 Page - Texas Instruments |
4 / 11 page www.ti.com FUNCTION/TRUTH TABLE, TPS380x L RESET H L L 0 VDD>VIT 1 0 1 L MR H H L VDD 30 k Ω R2 _ + R1 VDD GND RESET MR TPS380x Oscillator Reference Voltage of 1.14 V Reset Logic + Timer TPS3800-xx TPS3801-xx TPS3802-xx SLVS219C – AUGUST 1999 – REVISED JULY 2003 TIMING REQUIREMENTS at R L = 1 MΩ, CL = 50 pF, TA = 25°C parameter TEST CONDITIONS min TYP max unit at SENSE VDD = 1.6 V,VIH = 1.1 × VIT-, VIL = 0.9 × VIT- 1 µs tw Pulse width at VDD VDD = VIT- + 0.2 V, VDD = VIT- -0.2 V 3 at MR VDD ≥ VIT- + 0.2 V, VIL = 0.3 × VDD, VIH = 0.7 × VDD 100 ns SWITCHING CHARACTERISTICS at R L = 1 MΩ, CL = 50 pF, TA = 25°C parameter TEST CONDITIONS min TYP max unit TPS3801T50 15 25 35 VDD ≥ VIT- + 0.2 V, TPS3800 60 95 140 td RESET recovery delay time MR ≥ 0.7 × V DD ms TPS3801 120 200 280 See timing diagram TPS3802 240 380 560 VDD ≥ VIT- + 0.2 V, MR to RESET delay VIL = 0.3 × VDD, 15 ns Propagation (delay) time, high-to-low-level VIH = 0.7 × VDD tPHL output VDD to RESET delay VIL = VIT- - 0.2 V, 1 µs VIH = VIT- + 0.2 V SENSE to RESET FUNCTIONAL BLOCK DIAGRAM Figure 1. functional block diagram 4 |
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