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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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PC87427 Scheda tecnica(PDF) 44 Page - National Semiconductor (TI) |
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PC87427 Scheda tecnica(HTML) 44 Page - National Semiconductor (TI) |
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44 / 46 page  2.0 Device Characteristics (Continued) www.national.com 44 Revision 1.0 Crowbar Figure 20. Power-On Crowbar Timing Figure 21. Power-Fall Crowbar Timing Symbol Figure Description Reference Conditions Min Max tCBTO 20, 21 Crowbar Timeout1 1. Not tested. Guaranteed by design. After ONCTL active, or VDD power fall 0.5 s2 2. Set by CRBAR_TOUT. 20 s2 tCBPBO 20, 21 Crowbar generated, PWBTOUT pulse time1 After completion of Crowbar Timeout 4 s 4.25 s tPBID 20, 21 PWBTIN disable time1 After a Power-Off event 1 s 1.25 s tCBTO PWBTIN PWBTOUT ONCTL VDD (Power) tCBPBO tPBID tCBTO PWBTIN PWBTOUT ONCTL VDD (Power) tCBPBO tPBID |
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