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SS811-40CV Fiches technique(PDF) 1 Page - Silicon Standard Corp. |
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SS811-40CV Fiches technique(HTML) 1 Page - Silicon Standard Corp. |
1 / 8 page www.SiliconStandard.com 1 of 8 SS811, SS812 Rev.1.01 4/06/2004 Reset Circuits with Manual Reset Input FEATURES Ultra-low supply current of 1 µA (typ.) Guaranteed reset valid to Vcc=0.9V Available in two output yypes: Push-pull active-low (SS811) Push-pull active-high (SS812) Power-on reset pulse width minimum 140ms Internally fixed threshold 2.3V, 2.6V, 2.9V, 3.1V, 4.0V, 4.4V, and 4.6V Tight voltage threshold tolerance: 1.5% Low profile package: SOT-23-5 APPLICATIONS l Notebook Computers l Digital Still Cameras l PDAs l Critical Microprocessor Monitoring DESCRIPTION The SS811 and SS812 are low-power microprocessor (µP) supervisory circuits used to monitor power supplies in µP and digital systems. They improve circuit reliability and reduce cost by eliminating external components. The SS811 and SS812 also offer a manual reset input. These devices perform as valid singles in applications with Vcc ranging from 6.0V down to 0.9V. The reset signal lasts for a minimum period of 140ms whenever the VCC supply voltage falls below a preset threshold. Both the SS811 and SS812 were designed with a reset comparator to help identify invalid signals lasting less than 140ms. The only difference between the SS811 and the SS812 is that one has an active-low RESET output and the other has an active-high RESET output. A low supply current (1 µA) makes the SS811 and SS812 ideal for portable equipment. The devices are available in a SOT-23-5 package. TYPICAL APPLICATION CIRCUIT VCC VCC GND GND µP RESET INPUT RESET (RESET) MR VCC SS811 (SS812) Pushbutton Switch |
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