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MAX6347
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Part Number: MAX6347

Description: The MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/MAX6348 microprocessor (µP) supervisory circuits monitor the power su...

MAX6347 General Description

The MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/MAX6348 microprocessor (µP) supervisory circuits monitor the power supplies in µP and digital systems. These devices provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with 2.5V, 3V, 3.3V, and 5V powered circuits.

These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for at least 100ms after VCC has risen above the reset threshold. The only difference between the devices is their output. The MAX6326/MAX6346 (push-pull) and MAX6328/MAX6348 (open-drain) have an active-low reset output. The MAX6327/MAX6347 have an active-high push-pull reset output. All of these parts are guaranteed to be in the correct state for VCC down to 1V. The reset comparator is designed to ignore fast transients on VCC. Reset thresholds are factory-trimmable between 2.2V and 4.63V, in approximately 100mV increments. Twenty-one standard versions are available. Contact the factory for availability of nonstandard versions.

Ultra-low supply currents (1µA max for the MAX6326/MAX6327/MAX6328) make these parts ideal for use in portable equipment. All six devices are available in space-saving SOT23 and SC70 packages.

MAX6347 Maximum Ratings

Terminal Voltage (with respect to GND)
VCC...........................................................................-0.3V to +6V
RESET, ,RESET (push-pull) .........................- 0.3V to (VCC + 0.3V)
,RESET(open drain).................................................. -0.3V to +6V
Input Current (V_CC) ............................................................20mA
Output Current (RESET, ,RESET)......................................... 20mA
Rate of Rise (V_CC) ...........................................................100V/µs
Continuous Power Dissipation (T_A = +70°C)
3-Pin SC70 (derate 2.7mW/°C above +70°C) ...............174mW
3-Pin SOT23 (derate 4mW/°C above +70°C)................ 320mW
Operating Temperature Range .........................-40°C to +85°C
Storage Temperature Range ..........................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C

MAX6347 Features

Ultra-Low 1µA (max) Supply Current
    (MAX6326/MAX6327/MAX6328)
Precision Monitoring of 2.5V, 3V, 3.3V, and 5V
    Power-Supply Voltages
Reset Thresholds Available from 2.2V to 4.63V
Fully Specified Over Temperature
100ms (min) Power-On Reset Pulse Width
Low Cost
Available in Three Versions: Push-Pull RESET,
    Push-Pull ,RESET, and Open-Drain ,RESET
Power-Supply Transient Immunity
No External Components
3-Pin SC70/SOT23 Packages
Pin Compatible with MAX803/MAX809/MAX810

MAX6347 Typical Application

Computers                           Intelligent Instruments
Controllers                           Automotive
Critical µP and µC                Portable/Battery-Powered
Power Monitoring                 Equipment

MAX6347 Connection Diagram

MAX6347 datasheet

MAX6347
PDF/DataSheet Download

Datasheet: MAX6347
File Size: 134363 KB
Manufacturer: Maixm
Click here to Download

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Related Part Number

MAX6347 Relative Products

MAX6346XR46-T
IC MPU/RESET CIRC 4.63V SC70-3
MAX6346XR46+T
IC MPU/RESET CIRC 4.63V SC70-3
MAX6346XR45+T
IC VOLT DETECT LP 4.30V SC70-3
MAX6346XR44-T
IC MPU/RESET CIRC 4.38V SC70-3
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