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MAX6833FXRD3-T Datasheet(PDF) 8 Page - Maxim Integrated Products |
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MAX6833FXRD3-T Datasheet(HTML) 8 Page - Maxim Integrated Products |
8 / 11 page Using The MAX6834/MAX6837/MAX6840 Open-Drain RESET Output with Multiple Supplies Generally, the pullup connected to the MAX6834/ MAX6837/MAX6840 will connect to the supply voltage that is being monitored at the IC’s VCC pin. However, some systems may use the open-drain output to level- shift from the monitored supply to reset circuitry pow- ered by some other supply (Figure 5). Note that as the MAX6834/MAX6837/MAX6840’s VCC decreases, so does the IC’s ability to sink current at RESET. Also, with any pullup, RESET will be pulled high as VCC declines toward 0. The voltage where this occurs depends on the pullup resistor value and the voltage to which it is connected. Chip Information TRANSISTOR COUNT: 681 PROCESS: BiCMOS Ultra-Low-Voltage SC70 Voltage Detectors and µP Reset Circuits 8 _______________________________________________________________________________________ RESET GND RESET INPUT RPULLUP MAX6834 MAX6837 MAX6840 5V SYSTEM GND VCC +1.2V +5.0V VCC Figure 5. Using The MAX6834/MAX6837/MAX6840 Open-Drain RESET Output with Multiple Supplies Table 2. Active Timeout Period Guide SUFFIX TYPICAL RESET ACTIVE TIMEOUT PERIOD (ms) D0 0.07 D1 1.5 D2 30 D3 210 D4 1680 Table 3. Standard Versions DEVICE TOP MARK MAX6832VXRD0 AIQ MAX6832VXRD3 AIR MAX6832HXRD0 AIS MAX6832HXRD3 AIT MAX6832FXRD0 AIU MAX6832FXRD3 AIV MAX6833VXRD0 AHJ MAX6833VXRD3 AIW MAX6833HXRD0 AIX MAX6833HXRD3 AIY MAX6833FXRD0 AIZ MAX6833FXRD3 AJA MAX6834VXRD0 AJB MAX6834VXRD3 AJC MAX6834HXRD0 AJD MAX6834HXRD3 AJE MAX6834FXRD0 AJF MAX6834FXRD3 AJG MAX6835VXSD0 AEX Table 1. Threshold Suffix Guide Selector Guide SUFFIX RESET THRESHOLD (V) W 1.665 V 1.575 I 1.388 H 1.313 G 1.110 F 1.050 |
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