DS1819AR-5+T&R

Series:	MicroMonitor™
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	140 ms Minimum
Voltage - Threshold:	3.075V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-23-5
Base Part Number:	DS1819

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<p>The DS1819AR-5+T&R is a 3-terminal, adjustable supervisor designed to monitor supply voltage. It features parametrical reset, active-high push-pull reset output, and an adjustable reset threshold and timeout period. The device is optimized for reset of microprocessors and other per-packaged components, while permitting application flexibility.</p><p>The DS1819AR-5+T&R has a wide range of application fields, such as power supply protection, voltage supervisory reset functions, brownout protection for multiple CPU systems, and supply monitoring for sensitive logic circuits. It is highly recommended for applications requiring both flexibility and high accuracy.</p><p><strong>Working Principle</strong></p><p>The DS1819AR-5+T&R operates by monitoring an external voltage source. The external source is compared to the adjustable reset trip-point, which is set by the RT pin. The device monitors the external source and output a reset signal when the voltage drops below the reset trip-point. The reset signal remains active until the source rises above the trip-point and is then released. It also features a long timeout period of up to 130s after the reset signal is generated.</p><p>The DS1819AR-5+T&R also incorporates a low-power shutdown feature that allows it to be used for protecting circuits from becoming damaged due to static conditions such as low-voltage brownouts. This feature is enabled by the low-voltage shutdown (LVS) pin, which will cause the device to shutdown when the voltage on this pin goes below the threshold of the trip-point.</p><p>The device also includes a push-pull reset output, which can be used to reset a variety of devices, including microprocessors. The reset signal is typically open-drain, but can be configured as push-pull output. The reset signal is also active-high, meaning that it must be pulled high in order to activate the reset signal. This feature helps prevent false triggering of the reset signal.</p><p>The DS1819AR-5+T&R also includes a wide range of additional features, including temperature compensation, reset output time delay, and reset detection time after the reset signal is released. These additional features make the device ideal for numerous power supply protection and access monitoring applications.</p><p>In conclusion, the DS1819AR-5+T&R is a versatile 3-terminal supervisor device, suitable for a wide range of applications. It is capable of protecting circuits from static conditions, as well as providing a reliable reset signal. The device is also optimized for reset of microprocessors and per-packaged components, while allowing for application flexibility.</p>

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