MAX6864UK29D3S+T by Analog Devices

Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer


The MAX6854/MAX6855/MAX6856/MAX6858/MAX6860–MAX6869 ultra-low-current (170nA, typ) microprocessor (µP) supervisory circuits combine voltage monitoring, watchdog timer, and manual reset input functions in a 5-pin SOT23 package. These devices assert a reset signal whenever the monitored voltage drops below the factory-trimmed reset threshold voltage, manual reset is asserted, or the watchdog timer expires. The reset output remains asserted for a minimum timeout period after VCC rises above the reset threshold and manual reset is deasserted. Factory-trimmed reset threshold voltages are offered from +1.575V to +4.625V in approximately 100mV increments (see the Threshold Suffix Guide in the full data sheet). Each device is offered with six minimum reset timeout options, ranging from 10ms to 1200ms. The MAX6854/MAX6855/MAX6856/MAX6858/MAX6860–MAX6869 are offered in a variety of configurations (see the Selector Guide in the full data sheet). The MAX6854/MAX6855/MAX6856/MAX6861–MAX6869 provide a manual reset input, MR-bar. The MAX6864–MAX6869 offer a watchdog timer that monitors activity at the WDI input to prevent code execution errors. The MAX6864–MAX6869 offer watchdog timeout options of 3.3s or 209s (typ). The MAX6861/MAX6862/MAX6863 feature a pin-selectable reset delay period of 10ms or 150ms (min). Push-pull active-low, push-pull active-high, and open-drain active-low reset outputs are available.

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Prices starting from US$1.45

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Features

Ultra-Low 170nA (typ) Supply Current
Reset Thresholds from +1.575V to +4.625V in Approximately 100mV Increments
Six Minimum Reset Timeout Period Options from 10ms to 1200ms
Manual Reset Option
Watchdog Timer Option
Pin-Selectable 10ms/150ms (min) Reset Timeout Period (MAX6861/MAX6862/MAX6863)
Immune to Short VCC Transients
Guaranteed Reset Valid to VCC = +1.1V
Three Reset Output Options: Push-Pull active-low RESET Push-Pull RESET Open-Drain active-low RESET
Push-Pull active-low RESET
Push-Pull RESET
Open-Drain active-low RESET
No External Components
Small 5-Pin SOT23 Package
Pin Compatible to the TPS3836/TPS3837/TPS3838 (MAX6861/MAX6862/MAX6863)

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) 2.5
Reset Out Active LowPush-Pull
tRESET (min) 1ms to 15ms15ms to 85ms85ms to 300ms300ms to 1s
Watchdog Feature Input (WDI)
Watchdog Timeout >2s
Supervisor Features Manual Reset
ICC (µA) (max) 0.17
Package/Pins SOT23/5
BudgetaryPrice (See Notes) 1.64


MAX6864UK29D3S+T Power Management ICs - PMIC by Analog Devices

MPU SUPERVISOR 5.5V SOT-23-5

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

Specifications

Threshold Voltage 2.925V
No. of Supervisors / Monitors 1Monitors
Supply Voltage Min 1.2V
Supply Voltage Max 5.5V
Reset Type Active-Low Push-Pull
Digital IC Case SOT-23
No. of Pins 5Pins
Delay Time 225ms
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

Nanopower µP Supervisory Circu | Analog Devices
Mpu Supervisor, 5.5V, Sot-23-5 | Newark Electronics
MPU SUPERVISOR, 5.5V, SOT-23-5 | element14
MPU supervisor 10ms to 1200ms SOT23-5 | Schukat Electronic

Frequently Asked Questions

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This part has not been flagged as RoHS Compliant.

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