| AS1925 |
Ultra-Low Voltage Supervisor with Manual Reset,
Push/Pull Active-High/Low
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Description
The AS1925/AS1926 microprocessor supervisory circuits were designed to assert a single reset if the monitored supply voltage drops below its reset threshold or if the manual reset is activated. The reset remains asserted for a fixed timeout delay after VCC has risen above the reset threshold and the manual reset is deasserted.
Their small size, excellent circuit reliability, and low supply current (3.5µ A) make the AS1925/AS1926 a very low cost solution by eliminating external components and adjustments when used with low-voltage (+0.9 to +1.5V) systems.
The devices are available as the following standard products:
| Model |
Output Type |
| AS1925 |
Active-Low Push/Pull,
Active-High Push/Pull
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| AS1926 |
Active-Low Push/Pull,
Active-High Open-Drain |
The active-low open-drain reset output requires a pullup resistor that can be connected to a voltage from 0 to VCC. The reset comparator was specifically designed to ignore fast VCC transients.
The devices are available in a 5-pin SOT23 package.
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