MAX6730UTSD3+T by Analog Devices

Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output


The MAX6730–MAX6735 single-/dual-/triple-voltage microprocessor (µP) supervisors feature a watchdog timer and manual reset capability. The MAX6730–MAX6735 offer factory-set reset thresholds for monitoring voltages from +0.9V to +5V and an adjustable reset input for monitoring voltages down to +0.63V. The combination of these features significantly improves system reliability and accuracy when compared to separate ICs or discrete components. The active-low reset output asserts and remains asserted for the reset timeout period after all the monitored voltages exceed their respective thresholds. Multiple factory-set reset threshold combinations reduce the number of external components required. The MAX6730/MAX6731 monitor a single fixed voltage, the MAX6732/MAX6733 monitor two fixed voltages, and the MAX6734/MAX6735 monitor two fixed voltages and one adjustable voltage. All devices are offered with six minimum reset timeout periods ranging from 1.1ms to 1120ms. The MAX6730–MAX6735 feature a watchdog timer with an independent watchdog output. The watchdog timer prevents system lockup during code execution errors. A watchdog startup delay of 54s after reset asserts allows system initialization during power-up. The watchdog operates in normal mode with a 1.68s delay after initialization. The MAX6730/MAX6732/MAX6734 provide an active-low, open-drain watchdog output. The MAX6731/MAX6733/MAX6735 provide an active-low, push-pull watchdog output. Other features include a manual reset input (MAX6730/MAX6731/MAX6734/MAX6735) and push-pull reset output (MAX6731/MAX6733/MAX6735) or open-drain reset output (MAX6730/MAX6732/MAX6734). The MAX6730-MAX6733 are offered in a tiny SOT23-6 package. The MAX6734/MAX6735 are offered in a space-saving SOT23-8 package. All devices are fully specified over the extended -40°C to +85°C temperature range.

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Features

VCC1 (Primary Supply) Reset Threshold Voltages from +1.575V to +4.63V
VCC2 (Secondary Supply) Reset Threshold Voltages from +0.79V to +3.08V
Adjustable RSTIN Threshold for Monitoring Voltages Down to +0.63V (MAX6734/MAX6735 Only)
Six Reset Timeout Options
Watchdog Timer with Independent Watchdog Output 35s (min) Initial Watchdog Startup Period 1.12s (min) Normal Watchdog Timeout Period
35s (min) Initial Watchdog Startup Period
1.12s (min) Normal Watchdog Timeout Period
Manual Reset Input (MAX6730/MAX6731/MAX6734/MAX6735)
Guaranteed Reset Valid down to VCC1 or VCC2 = +0.8V
Push-Pull Active-Low RESET or Open-Drain Active-Low RESET Output
Immune to Short VCC Transients
Low Supply Current: 14µA (typ) at +3.6V
Small 6-Pin and 8-Pin SOT23 Packages
AEC-Q100 Qualified: MAX6734KATGD3/V+T, MAX6734KALTD3/V+T

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 LowOpen Drain
tRESET (min) 1ms to 15ms15ms to 85ms85ms to 300ms>1s
Watchdog Feature Extended Setup PeriodInput (WDI)Input/Output (WDI/WDO)
Watchdog Timeout 1s to 2s>2s
Supervisor Features Manual Reset
ICC (µA) (max) 37
Package/Pins SOT23/6
BudgetaryPrice (See Notes) 1.72


MAX6730UTSD3+T Power Management ICs - PMIC by Analog Devices

MPU SUPERVISOR 5.5V SOT-23-6

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 800mV
Supply Voltage Max 5.5V
Reset Type Active-Low Open-Drain
Digital IC Case SOT-23
No. of Pins 6Pins
Delay Time 210ms
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-23-6 | element14
Single-/Dual-/Triple-Voltage µ | Analog Devices
Mpu Supervisor, 5.5V, Sot-23-6 | Newark Electronics

Frequently Asked Questions

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Is the MAX6730UTSD3+T RoHS compliant?

This part has not been flagged as RoHS Compliant.

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