DS1231-20N+ by Analog Devices

Power Monitor

Status: Active
Series: DS1231
RoHS: Unknown
View Datasheet Manufacturer Site View Pricing & Stock

With precise, temperature-compensated comparators, the DS1231 Power Monitor Chip monitors input power and a 5V system power supply. If unsafe voltages are detected, a nonmaskable interrupt sends a warning signal to the processor in advance of power failure. Processing is unconditionally halted when power falls below a user-selectable 5% or 10% threshold level, with time to shutdown proportional to the available hold-up time of the power supply. Upon return of power, the DS1231 maintains reset until power conditions stabilize. The DS1231 enhances system reliability by closely monitoring both processor and upstream power levels, warning of impending failure, and automatically suspending and restarting processor operation. An input sense also supports a connection to switched inputs such as an opto-isolator for LED function. All external reset components (i.e., pull-up resistor and delay timing capacitor) are contained in one package, saving space and cost.

Prices starting from US$7.55


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$10.65
41
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Logo for element14 element14 US$8.20
39
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Features

Monitors input and power supply and warns of impending failure
Provides orderly shutdown
Initiates and holds processor reset until levels are unsafe
Tolerance threshold levels can be set for 5% or 10%
Automatically restarts processor on power-up
Pauses restart until system stabilizes
Operating range: 0°C to +70°C (DS1231 and DS1231S) -40°C to +85°C (DS1231-N and DS1231S-N)
Optional active-low NMI Hysteresis (200mV = "-20", 350mV = "-35", 500mV = "-50")

Specifications

Reset Thresh. (V) 3.3 to 5.5
Reset Thresh. Accur. (%) (@ +25°C) 2.5
Reset Out Active LowOpen Drain
tRESET (min) 85ms to 300ms
Watchdog Feature No Watchdog
Supervisor Features Power Fail Comparator/Low Battery Detect
ICC (µA) (max) 2000
Package/Pins PDIP/8SOIC (W)/16
BudgetaryPrice (See Notes) 4.47


DS1231-20N+ Power Management ICs - PMIC by Analog Devices

MPU SUPERVISOR 5.5V DIP-8

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

Specifications

Threshold Voltage 4.62V
No. of Supervisors / Monitors 1Monitors
Supply Voltage Min 4.5V
Supply Voltage Max 5.5V
Reset Type Active-High Push-Pull / Active-Low Push-Pull
Digital IC Case DIP
No. of Pins 8Pins
Delay Time 500ms
Operating Temperature Min 0°C
Operating Temperature Max 70°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Mpu Supervisor, 5.5V, Dip-8 | Newark Electronics
MPU SUPERVISOR, 5.5V, DIP-8 | element14

Frequently Asked Questions

Where can I find additional details, specifications and documents for a DS1231-20N+ ?

Additional datasheets, footprints and schematics for DS1231-20N+ are listed on our Part Details page. You can also find images and similar parts to DS1231-20N+ on this page.

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Is the DS1231-20N+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for DS1231-20N+ have stock available?

Authorised distributors including Newark Electronics, element14 and Farnell have stock available or on a lead time for DS1231-20N+ .

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