Datenblatt-Suchmaschine für elektronische Bauteile |
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ULN2003LV Datenblatt(PDF) 7 Page - Texas Instruments |
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ULN2003LV Datenblatt(HTML) 7 Page - Texas Instruments |
7 / 19 page ULN2003LV IN3 IN4 OUT1 OUT2 OUT3 OUT4 IN5 IN6 IN7 GND OUT5 OUT6 OUT7 COM IN1 IN2 Logic Inputs (1.8V to 5V) VSUP_MAX VSUP1 VSUP2 VSUP3 VSUP _MAX VSUP_MAX = Max of {VSUP1, VSUP2, VSUP3} – VF VF = Diode forward drop@ Total ground-pin current ULN2003LV www.ti.com SLRS059A – APRIL 2012 – REVISED APRIL 2012 Max Supply Selector The Figure 4 implements a max supply selector along with a 4-channel logic level shifter using a single ULN20003LV. This setup configures ULN2003LV’s channel clamp diodes OUT5 – OUT7 in a diode-OR configuration and thus the maximum supply among VSUP1, VSUP2 and VSUP3 becomes available at the COM pin. The maximum supply is then used as a pull-up voltage for level shifters. Limit the net GND pin current to less than 100mA DC to ensure reliability of the conducting diode. The unconnected inputs IN5-IN7 are pulled to GND potential through 300k Ω internal pull-down resistor. Figure 4. ULN2003LV as Max Supply Selector Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Link(s): ULN2003LV |
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