DS1819AR-10+T&R by Analog Devices

5 Volt and 3.3 Volt MicroMonitor

Status: Active
Series: DS1819A, DS1819B, DS1819C
RoHS: Unknown
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The DS1814 5-Volt MicroMonitor and the DS1819 3.3V MicroMonitor monitor three vital conditions for a microprocessor: power supply, software execution, and external override. First, a precision temperature-compensated reference and comparator circuit monitor the status of VCC. When an out-of-tolerance condition occurs, an internal power-fail signal is generated which forces the reset(s) to an active state. When VCC returns to an in-tolerance condition, the reset signal is kept in the active state for a minimum of 140ms to allow the power supply and processor to stabilize. The DS1814/DS1819 ‘A' and ‘C' perform pushbutton reset control. They debounce the pushbutton input and generate an active reset pulse width of 140ms minimum. The DS1814/9 'A' and 'B' versions perform a watchdog function. The watchdog is an internal timer that forces the reset signals to the active state if the strobe input does not change state every 1.12 seconds. The watchdog timer function can be disabled by leaving the watchdog strobe input disconnected.

Prices starting from US$5.97


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Features

Halts and restarts an out-of-control microprocessor
Holds microprocessor in check during power transients
Automatically restarts microprocessor after power failure
Monitors pushbutton for external override
Accurate 5%, 10%, or 20% (3V only) microprocessor power monitoring
Eliminates the need for discrete components
20% tolerance for use with 3.0V systems
Pin- and function-compatible with the MAX823/24/25 products
Low cost SOT-23-5 package
Industrial temperature range: -40°C to +85°C

Specifications

Reset Thresh. (V) 2.5 to 3.3
Reset Thresh. Accur. (%) (@ +25°C) 2.5
Reset Out Active LowPush-Pull
tRESET (min) 85ms to 300ms
Watchdog Feature Input (WDI)
Watchdog Timeout 1s to 2s
Supervisor Features Manual Reset
ICC (µA) (max) 12
Package/Pins See Data Sheet


DS1819AR-10+T&R Power Management ICs - PMIC by Analog Devices

MPU SUPERVISOR 5.5V SOT-23-5

Status: Unknown
Series: -
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

Specifications

Threshold Voltage 3V
No. of Supervisors / Monitors 1Monitors
Supply Voltage Min 1V
Supply Voltage Max 5.5V
Reset Type Active-Low Push-Pull
Digital IC Case SOT-23
No. of Pins 5Pins
Delay Time 200ms
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

MPU SUPERVISOR, 5.5V, SOT-23-5 | Farnell
Mpu Supervisor, 5.5V, Sot-23-5 | Newark Electronics

Frequently Asked Questions

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Is the DS1819AR-10+T&R RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Farnell and Newark Electronics have stock available or on a lead time for DS1819AR-10+T&R .

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