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PT7M6534CHTA5E Datasheet(PDF) 3 Page - Pericom Semiconductor Corporation |
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PT7M6534CHTA5E Datasheet(HTML) 3 Page - Pericom Semiconductor Corporation |
3 / 8 page |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 2016-01-0031 PT0450-1 03/14/16 3 PT7M6518-6550(CL/CH /NL) Voltage Detector with Adjustable Delay Time AC Electrical Characteristics PT7M65xxNL Timing diagram (VCC = 1.2V to 5.5V, TA= -40~85ºC, unless otherwise noted. Typical values are at TA = +25ºC) Sym. Description Test Conditions Min. Typ. Max. Unit tPD Reset active Propagation Delay - 50 - s tdelay Reset inactive delay time after VCC >VTH+ (Reset Timeout Period). - Cd(F)×4 ×10 6+40 - s Function Description PT7M65xx has adjustable reset output delay time function throw Cd pin with cap. Internal 250nA sourcing will charge the external cap throw Cd pin when VCC is rise above VTH+, and reset output will disalert after Cd pin voltage is reaches 1V. This delay time is tdelay=Cd (µF) ×4×10 6µs +40µs. For example, if Cd=1nF, the t delay=0.001×4×10 6 µs +40µs=4040µs. Cd pin voltage will be discharged when reset output is assert ok at Vcc falls below Vth-, the discharge resistance is about 200Ω. VTH+ VTH- tdelay tPD RST VCC |
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