MAX6746KA23+T by Analog Devices

µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay

Status: Active
Series: MAX6746
RoHS: Unknown
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The MAX6746–MAX6753 low-power microprocessor (µP) supervisory circuits monitor single/dual system supply voltages from 1.575V to 5V and provide maximum adjustability for reset and watchdog functions. These devices assert a reset signal whenever the VCC supply voltage or RESET IN falls below its reset threshold or when manual reset is pulled low. The reset output remains asserted for the reset timeout period after VCC and RESET IN rise above the reset threshold. The reset function features immunity to power-supply transients. The MAX6746–MAX6753 have ±2% factory-trimmed reset threshold voltages in approximately 100mV increments from 1.575V to 5.0V and/or adjustable reset threshold voltages using external resistors. The reset and watchdog delays are adjustable with external capacitors. The MAX6746–MAX6751 contain a watchdog select input that extends the watchdog timeout period by 128x. The MAX6752/MAX6753 contain a window watchdog timer that looks for activity outside an expected window of operation. The MAX6746–MAX6753 are available with a push-pull or open-drain active-low RESET output. The MAX6746–MAX6753 are available in an 8-pin SOT23 package and are fully specified over the automotive temperature range (-40°C to +125°C). Design Solution: Build in Automotive Insurance with Supervisor and Watchdog Policies ›

Prices starting from US$2.36


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Logo for Newark Electronics Newark Electronics US$2.41
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Features

Configurable Reset and Watchdog Options EnablesWide Variety of Applications Factory-Set Reset Threshold Options from 1.575V to 5V in ~ 100mV Increments Adjustable Reset Threshold Options Single/Dual Voltage Monitoring Capacitor-Adjustable Reset Timeout Capacitor-Adjustable Watchdog Timeout Min/Max (Windowed) Watchdog Option Manual-Reset Input Option Push-Pull or Open-Drain Active-Low RESET Output Options
Factory-Set Reset Threshold Options from 1.575V to 5V in ~ 100mV Increments
Adjustable Reset Threshold Options
Single/Dual Voltage Monitoring
Capacitor-Adjustable Reset Timeout
Capacitor-Adjustable Watchdog Timeout
Min/Max (Windowed) Watchdog Option
Manual-Reset Input Option
Push-Pull or Open-Drain Active-Low RESET Output Options
3.7µA Supply Current Reduces System Power Consumption
Integrated Power Supply Protection Increases Robustness Power-Supply Transient Immunity Guaranteed Active-Low RESET Valid for VCC ≥ 1V
Power-Supply Transient Immunity
Guaranteed Active-Low RESET Valid for VCC ≥ 1V
8-Pin SOT23 Packages Saves Board Space
AEC-Q100 Qualified. Refer to Ordering Information for Specific /V Trim Variants

Specifications

Reset Thresh. (V) 1.2 to 1.81.8 to 2.52.5 to 3.33.3 to 5.5
Reset Thresh. Accur. (%) (@ +25°C) 2
Reset Out Active LowPush-Pull
tRESET (min) 1ms to 15ms15ms to 85ms85ms to 300ms300ms to 1s<1ms>1sAdjustable
Watchdog Feature Cap AdjustableInput (WDI)
Watchdog Timeout 1s to 2s<1s>2sAdjustable
Supervisor Features Manual Reset
ICC (µA) (max) 10
Package/Pins SOT23/8
BudgetaryPrice (See Notes) 1.97


MAX6746KA23+T Power Management ICs - PMIC by Analog Devices

MPU SUPERVISOR 5.5V SOT-23-8

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

Specifications

Threshold Voltage 2.313V
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 8Pins
Delay Time 7.59ms
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Mpu Supervisor, 5.5V, Sot-23-8 | Newark Electronics
MPU SUPERVISOR, 5.5V, SOT-23-8 | element14

Frequently Asked Questions

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This part has not been flagged as RoHS Compliant.

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