DS1831BS+ Maxim Integrated Products, DS1831BS+ Datasheet
DS1831BS+
Specifications of DS1831BS+
Related parts for DS1831BS+
DS1831BS+ Summary of contents
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FEATURES § 5V power-on reset § 3.3V power-on reset § Two referenced comparators with separate outputs for monitoring additional supplies § Internal power is drawn from higher of either the IN input or the IN 5V 3.3V § Excellent ...
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The DS1831A replaces one reference comparator and the master pushbutton with watchdog and the DS1831B replaces the 3.3V last reset status output. TOL and TD inputs allow user configuration ...
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OPERATION—POWER MONITOR The DS1831 provides the functions of detecting out-of-tolerance conditions on a 3.3V (or 3V) and 5V power supply and warning a processor-based system of impending power failure. When an input is detected as out-of-tolerance on either voltage input ...
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PUSHBUTTON RESET SEQUENCING Figure 2 NOTE: The output is connected to the IN RST 5V therefore does not require a pull-up resistor (an addition pull up can be used to accelerate responses external pull up is used in ...
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PUSHBUTTON RESET Figure 3 TIMING DIAGRAM—MASTER PUSHBUTTON RESET Figure 4 MPBRST t PDLY V IL RST and RST 5V 3.3V NMI1 and NMI2 5V Supply RST 5V 2 DS1831 TOL ...
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TIMING DIAGRAM—5V OR 3.3V PUSHBUTTON RESET Figure 5 PBRST 5V (or PBRST ) 3. RST (or RST 5V 3.3V OPERATION—PUSHBUTTON STATUS The DS1831B provides a master pushbutton status open drain output. The status of the most recent reset ...
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OUTPUT VALID CONDITIONS The DS1831 can maintain valid outputs as long as one input remains above 1.0V. Accurate voltage monitoring additionally requires that either the 3. input be above 1.5V. If this condition is not met ...
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The output associated with the specific input will be held low if the voltage on the input pin is less than 1.25V. If the voltage is above 1.25V the output will not sink current and will be pulled up by ...
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NON-MASKABLE INTERRUPT CIRCUIT EXAMPLE Figure SENSE1 SENSE2 R3 R4 Example 11.50V trip point V SENSE1 R1 + Therefore: 11.50V = 100 Resulting In 820kW Repeat the same steps to solve for R3 and ...
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The input can be derived from many microprocessor outputs. The most typical signals used are the ST microprocessor address signals, data signals, or control signals. When the microprocessor functions normally, these signals would matter of routine, cause the ...
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RESET TIMING DIAGRAM—POWER UP Figure 3.3V RST (or RST 5V RESET TIMING DIAGRAM — POWER DOWN Figure 3.3V V INTP RST (or RST 5V V (MAX) INTP V INTP ...
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ABSOLUTE MAXIMUM RATINGS* Voltage 3.3V Pins Relative to Ground Voltage on either RST Relative to Ground Voltage on PBRST Relative to Ground 3.3V Voltage on PBRST Relative to Ground 5V Voltage on MPBRST, IN1, IN2 ...
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CAPACITANCE PARAMETER SYMBOL Input Capacitance Input Capacitance AC ELECTRICAL CHARACTERISTICS PARAMETER RESET Active Time (TD=Low) RESET Active Time (TD=Float) RESET Active Time (TD=High) V Detect to RST CC V Detect to RST CC VIN Detect to NMI NMI Active Time ...
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ORDERING INFORMATION Ordering Part Package Type Number DS1831 16-Pin DIP 300mil DS1831S 16-Pin SO 150mil DS1831A 16-Pin DIP 300mil DS1831AS 16-Pin SO 150mil DS1831B 16-Pin DIP 300mil DS1831BS 16-Pin SO 150mil * Add “/T&R” for tape and reeling of surface ...