MAX6715：Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits

The MAX6715-MAX6729 are ultra-low-voltage microprocessor (µP) supervisory circuits designed to monitor two or three system power-supply voltages. These devices assert a system reset if any monitored supply falls below its factory-trimmed or adjustable threshold and maintain reset for a minimum timeout period after all supplies rise above their thresholds. The integrated dual/triple supervisory circuits significantly improve system reliability and reduce size compared to separate ICs or discrete components. These devices monitor primary supply voltages (VCC1) from 1.8V to 5.0V and secondary supply voltages (VCC2) from 0.9V to 3.3V with factory-trimmed reset threshold voltage options (see Reset Voltage Threshold Suffix Guide). An externally adjustable RSTIN input option allows customers to monitor a third supply voltage down to 0.62V. These devices are guaranteed to be in the correct reset output logic state when either VCC1 or VCC2 remains greater than 0.8V. A variety of push-pull or open-drain reset outputs along with watchdog input, manual reset input, and power-fail input/output features are available (see Selector Guide). Select reset timeout periods from 1.1ms to 1120ms (min) (see Reset Timeout Period Suffix Guide). The MAX6715-MAX6729 are available in small 5, 6, and 8-pin SOT23 packages and operate over the -40°C to +85°C temperature range.

Key Features
  • VCC1 (primary supply) Reset Threshold Voltages from 1.58V to 4.63V
  • VCC2 (secondary supply) Reset Threshold Voltages from 0.79V to 3.08V
  • Externally Adjustable RSTIN Threshold for Auxiliary/Triple-Voltage Monitoring (0.62V internal reference)
  • Watchdog Timer Option
    • 35s (min) Long Startup Period
    • 1.12s (min) Normal Timeout Period
  • Manual Reset Input Option
  • Power-Fail Input/Power-Fail Output Option (Push-Pull and Open-Drain Active-Low)
  • Guaranteed Reset Valid Down to VCC1 or VCC2 = 0.8V
  • Reset Output Logic Options
  • Immune to Short VCC Transients
  • Low Supply Current 14µA (typ) at 3.6V
  • Small 5, 6, and 8-Pin SOT23 Packages
MAX6715, MAX6716, MAX6717, MAX6718, MAX6719, MAX6720, MAX6721, MAX6722, MAX6723, MAX6724, MAX6725, MAX6726, MAX6727, MAX6728, MAX6729: Typical Operating Circuit
MAX6715, MAX6716, MAX6717, MAX6718, MAX6719, MAX6720, MAX6721, MAX6722, MAX6723, MAX6724, MAX6725, MAX6726, MAX6727, MAX6728, MAX6729: Typical Operating Circuit
Applications/Uses
  • Computers/Servers
  • Industrial Equipment
  • Multivoltage Systems
  • Portable Battery-Powered Equipment
  • Printers and Faxes
  • Set-Top Boxes
  • Telecom/Networking Equipment
DataSheet
titleDownload file
MAX6715-MAX6729 Data SheetMAX6715-MAX6729.pdf
Parametrics
Part NumberInterfaceReset Thresh.
(V)		Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesReset Thresh. Accur.
(%)		ICC
(µA)		Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
MAX6715Factory Fixed0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5		Active Low
Open Drain		1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
>1s		No Watchdog-Manual Reset2.537SOT/6$3.21 @1k
MAX6716Active Low
Push-Pull		No Watchdog-Manual ResetSOT/6$3.21 @1k
MAX6717Active Low
Open Drain		No Watchdog-Manual ResetSOT/5$3.21 @1k
MAX6718Active Low
Push-Pull		No Watchdog-Manual ResetSOT/5$3.21 @1k
MAX6721Active Low
Open Drain		Extended Setup Period
Input (WDI)		1s to 2s
>2s		Manual ResetSOT/6$3.21 @1k
MAX6722Active Low
Push-Pull		Extended Setup Period
Input (WDI)		1s to 2s
>2s		Manual ResetSOT/6$2.85 @1k
MAX6728Active Low
Open Drain		Extended Setup Period
Input (WDI)		1s to 2s
>2s		Adjustable Reset Input
Manual Reset
Power Fail Comparator/Low Battery Detect		SOT/8$3.21 @1k
MAX6729Active Low
Push-Pull		Extended Setup Period
Input (WDI)		1s to 2s
>2s		Adjustable Reset Input
Manual Reset
Power Fail Comparator/Low Battery Detect		SOT/8$3.21 @1k

Part NumberInterfaceReset Thresh.
(V)		Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesReset Thresh. Accur.
(%)		ICC
(µA)		Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
MAX6719Factory Fixed0 to 1.2
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5		Active Low
Open Drain		1ms to 15ms
15ms to 85ms
85ms to 300ms
300ms to 1s
>1s		No Watchdog-Adjustable Reset Input
Manual Reset		2.537SOT/6$3.21 @1k
MAX6720Active Low
Push-Pull		No Watchdog-Adjustable Reset Input
Manual Reset		SOT/6
MAX6723Active Low
Open Drain		Extended Setup Period
Input (WDI)		1s to 2s
>2s		Adjustable Reset InputSOT/6
MAX6724Active Low
Push-Pull		Extended Setup Period
Input (WDI)		1s to 2s
>2s		Adjustable Reset InputSOT/6
MAX6725Active High
Active Low
Open Drain		Extended Setup Period
Input (WDI)		1s to 2s
>2s		Adjustable Reset Input
Manual Reset		SOT/8
MAX6726Active High
Active Low
Push-Pull		Extended Setup Period
Input (WDI)		1s to 2s
>2s		Adjustable Reset Input
Manual Reset		SOT/8
MAX6727Active Low
Open Drain		Extended Setup Period
Input (WDI)		1s to 2s
>2s		Adjustable Reset Input
Manual Reset		SOT/8
Related Products
  • MAX6708：Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
  • MAX6705：Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
  • MAX6706：Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
  • MAX6703：Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
  • MAX6704：Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
  • MAX6701：Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
  • MAX6702：Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
  • MAX6707：Low-Voltage, SOT23, µP Supervisors with Power-Fail In/Out, Manual Reset, and Watchdog Timer
  • MAX6828：Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
  • MAX6831：Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
  • MAX6829：Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
  • MAX6826：Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
  • MAX6827：Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
  • MAX6830：Dual, Ultra-Low-Voltage SOT23 µP Supervisors with Manual Reset and Watchdog Timer
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6715UTLTD1-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTLTD2-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTLTD3+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6715UTLTD3-TNo Longer AvailableMAX6715UTLTD3+TSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTLTD4-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTLTD5-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTLTD6-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTMRD1-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTMRD2-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTMRD3-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6715UTMRD4-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTMRD5-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTMRD6-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTMSD1-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTMSD2-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTMSD3-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTMSD4-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTMSD5-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTMSD6-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRDD1-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6715UTRDD2-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRDD3-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRDD4-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRDD5-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRDD6-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRFD1-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRFD2-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRFD3-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRFD4-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRFD5-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6715UTRFD6-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRHD1-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRHD2-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRHD3-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRHD4-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRHD5-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRHD6-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRVD1-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRVD2-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRVD3+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6715UTRVD3-TNo Longer AvailableMAX6715UTRVD3+TSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRVD4-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRVD5-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRVD6-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRYD1-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRYD2-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRYD3-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRYD4-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRYD5-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715UTRYD6-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6715-MAX6729.pdf MAX6727
MAX6715-MAX6729.pdf MAX6729
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