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MAX6723AUTTFD3 View Datasheet(PDF) - Maxim Integrated

Part NameMAX6723AUTTFD3 MaximIC
Maxim Integrated MaximIC
DescriptionDual/Triple, Ultra-Low-Voltage, SOT23 µP Supervisory Circuits


MAX6723AUTTFD3 Datasheet PDF : 18 Pages
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Dual/Triple, Ultra-Low-Voltage, SOT23 µP
Supervisory Circuits
ELECTRICAL CHARACTERISTICS (continued)
(VCC1 = 0.8V to 5.5V, VCC2 = 0.8V to 5.5V, GND = 0V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA =
+25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
RESET/POWER-FAIL OUTPUTS
VCC1 or VCC2 0.8V, ISINK = 1µA,
output asserted
0.3
VCC1 or VCC2 1.0V, ISINK = 50µA,
output asserted
0.3
RST/RST1/RST2/PFO
Output LOW
(Push-Pull or Open-Drain)
VOL
VCC1 or VCC2 1.2V, ISINK = 100µA,
output asserted
0.3
VCC1 or VCC2 2.7V, ISINK = 1.2mA,
output asserted
0.3
RST/RST1/PFO
Output HIGH
(Push-Pull Only)
VCC1 or VCC2 4.5V, ISINK = 3.2mA,
0.4
output asserted
VCC1 1.8V, ISOURCE = 200µA, output not
asserted
0.8 VCC1
VOH
VCC1 2.7V, ISOURCE = 500µA, output not
asserted
0.8 VCC1
VCC1 4.5V, ISOURCE = 800µA, output not
asserted
0.8 VCC1
RST2
Output HIGH
(Push-Pull Only)
RST
Output HIGH
(Push-Pull Only)
VOH
VOH
VCC1 1.8V, ISOURCE = 200µA, output not
asserted
VCC1 2.7V, ISOURCE = 500µA, output not
asserted
VCC1 4.5V, ISOURCE = 800µA, output not
asserted
VCC1 1.0V, ISOURCE = 1µA, reset asserted
VCC1 1.8V, ISOURCE = 150µA,
reset asserted
VCC1 2.7V, ISOURCE = 500µA,
reset asserted
0.8 VCC2
0.8 VCC2
0.8 VCC2
0.8 VCC1
0.8 VCC1
0.8 VCC1
VCC1 4.5V, ISOURCE = 800µA,
reset asserted
0.8 VCC1
VCC1 or VCC2 1.8V, ISINK = 500µA,
reset not asserted
0.3
RST
Output LOW
(Push-Pull or Open Drain)
VOL
VCC1 or VCC2 2.7V, ISINK = 1.2mA,
reset not asserted
0.3
VCC1 or VCC2 4.5V, ISINK = 3.2mA,
0.4
reset not asserted
RST/RST1/RST2/PFO Output
Output not asserted
0.5
Open-Drain Leakage Current
RST Output Open-Drain
Leakage Current
Output asserted
0.5
Note 1: Devices tested at TA = +25°C. Overtemperature limits are guaranteed by design and not production tested.
Note 2: Parameter guaranteed by design.
UNITS
V
V
V
V
V
µA
µA
4 _______________________________________________________________________________________
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General Description
The MAX6715A–MAX6729A/MAX6797A 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.

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
♦ Watchdog Disable Feature
♦ Small 5-, 6-, and 8-Pin SOT23 Packages

Applications
Multivoltage Systems
Telecom/Networking Equipment
Computers/Servers
Portable/Battery Operated Equipment
Industrial Equipment
Printers/Fax Machines
Set-Top Boxes

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