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CAT808NTBI-27T3 Datasheet(PDF) 3 Page - Catalyst Semiconductor |
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CAT808NTBI-27T3 Datasheet(HTML) 3 Page - Catalyst Semiconductor |
3 / 8 page CAT808 © 2006 Catalyst Semiconductor, Inc. 3 Doc. No. 3024 Rev. A Characteristics subject to change without notice OPERATION – VOLTAGE DETECTOR The CAT808 has an active low output that asserts (pulls low) when the supply voltage drops below the detection threshold voltage (VDET). The open-drain output requires an external pull-up resistor between the output pin and the supply voltage (as shown in the typical application diagram). On power-up, OUT ¯¯¯¯ is held active low until the supply voltage (VDD) rises above VDET. While VDD is above VDET, OUT ¯¯¯¯ stays high until VDD drops below VDET, then OUT ¯¯¯¯ once again goes low. BLOCK DIAGRAM TIMING DIAGRAM * Voltage of VDD below 1 volt will not be able to maintain low output. PIN FUNCTIONS Pin Function VDD Voltage Input and Power Supply GND Ground Pin OUT ¯¯¯¯ Active Low Open Drain output NC No Connect, the pin is electrically open VOLTAGE REFERENCE OUT VDD TPLH TPHL VDET(MIN) VDET(MIN) VDET(MAX) VDET VDET(MAX) VDET OUT Slews with VDD GND VOH VDD* OUT |
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Similar Description - CAT808NTBI-27T3 |
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