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MAX6387 Dataheets PDF



Part Number MAX6387
Manufacturers Maxim Integrated Products
Logo Maxim Integrated Products
Description Low-Power uP Reset Circuits
Datasheet MAX6387 DatasheetMAX6387 Datasheet (PDF)

www.datasheet4u.com 19-1839; Rev 1; 04/01 SC70, Single/Dual Low-Voltage, Low-Power µP Reset Circuits General Description The MAX6381–MAX6390 microprocessor (µP) supervisory circuits monitor power supply voltages from +1.8V to +5.0V while consuming only 3µA of supply current at +1.8V. Whenever VCC falls below the factory-set reset thresholds, the reset output asserts and remains asserted for a minimum reset timeout period after VCC rises above the reset threshold. Reset thresholds are available .

  MAX6387   MAX6387


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www.datasheet4u.com 19-1839; Rev 1; 04/01 SC70, Single/Dual Low-Voltage, Low-Power µP Reset Circuits General Description The MAX6381–MAX6390 microprocessor (µP) supervisory circuits monitor power supply voltages from +1.8V to +5.0V while consuming only 3µA of supply current at +1.8V. Whenever VCC falls below the factory-set reset thresholds, the reset output asserts and remains asserted for a minimum reset timeout period after VCC rises above the reset threshold. Reset thresholds are available from +1.58V to +4.63V, in approximately 100mV increments. Seven minimum reset timeout delays ranging from 1ms to 1200ms are available. The MAX6381/MAX6384/MAX6387 have a push-pull active-low reset output. The MAX6382/MAX6385/ MAX6388 have a push-pull active-high reset output, and the MAX6383/MAX6386/MAX6389/MAX6390 have an open-drain active-low reset output. The MAX6384/MAX6385/MAX6386 also feature a debounced manual reset input (with internal pullup resistor). The MAX6387/MAX6388/MAX6389 have an auxiliary input for monitoring a second voltage. The MAX6390 offers a manual reset input with a longer VCC reset timeout period (1120ms or 1200ms) and a shorter manual reset timeout (140ms or 150ms). The MAX6381/MAX6382/MAX6383 are available in 3-pin SC70 packages and the MAX6384–MAX6390 are available in 4-pin SC70 packages. Features o Factory-Set Reset Threshold Voltages Ranging from +1.58V to +4.63V in Approximately 100mV Increments o ±2.5% Reset Threshold Accuracy Over Temperature (-40°C to +125°C) o Seven Reset Timeout Periods Available: 1ms, 20ms, 140ms, 280ms, 560ms, 1120ms, 1200ms (min) o 3 Reset Output Options Active-Low Push-Pull Active-High Push-Pull Active-Low Open-Drain o Reset Output State Guaranteed Valid Down to VCC = 1V o Manual Reset Input (MAX6384/MAX6385/MAX6386) o Auxiliary RESET IN (MAX6387/MAX6388/MAX6389) o VCC Reset Timeout (1120ms or 1200ms)/Manual Reset Timeout (140ms or 150ms) (MAX6390) o Negative-Going VCC Transient Immunity o Low Power Consumption of 6µA at +3.6V and 3µA at +1.8V o Pin Compatible with MAX809/MAX810/MAX803/MAX6326/MAX6327/ MAX6328/MAX6346/MAX6347/MAX6348, and MAX6711/MAX6712/MAX6713 o Tiny 3-Pin SC70 and 4-Pin SC70 Packages MAX6381–MAX6390 ________________________Applications Computers Controllers Intelligent Instruments Critical µP and µC Power Monitoring Portable/Battery-Powered Equipment Dual Voltage Systems Ordering Information PART MAX6381XR_ _D_-T TEMP. RANGE -40°C to +125°C -40°C to +125°C -40°C to +125°C PIN-PACKAGE 3 SC70-3 3 SC70-3 3 SC70-3 Pin Configurations TOP VIEW GND 1 MAX6382XR_ _D_-T MAX6383XR_ _D_-T RESET (RESET) 2 MAX6381 MAX6382 MAX6383 3 VCC Note: Insert reset threshold suffix (see Reset Threshold table) after "XR" or "XS". Insert reset timeout delay (see Reset Timeout Delay table) after "D" to complete the part number. Sample stock is generally held on standard versions only (see Standard Versions table). Standard versions have an order increment requirement of 2500 pieces. Nonstandard versions have an order increment requirement of 10,000 pieces. Contact factory for availability of nonstandard versions. *MAX6390 is available with D4 or D7 timing only. Ordering Information continued at end of data sheet. Typical Operating Circuit appears at end of data sheet. Selector Guide appears at end of data sheet. 1 SC70 ( ) IS FOR MAX6382 Pin Configurations continued at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. www.datasheet4u.com SC70, Single/Dual Low-Voltage, Low-Power µP Reset Circuits MAX6381–MAX6390 ABSOLUTE MAXIMUM RATINGS VCC to GND ..........................................................-0.3V to +6.0V RESET Open-Drain Output....................................-0.3V to +6.0V RESET, RESET (Push-Pull Output) .............-0.3V to (VCC + 0.3V) MR, RESET IN.............................................-0.3V to (VCC + 0.3V) Input Current (VCC) .............................................................20mA Output Current (All Pins) .....................................................20mA Continuous Power Dissipation (TA = +70°C) 3-Pin SC70 (derate 2.9mW/°C above +70°C)........235mW 4-Pin SC70 (derate 3.1mW/°C above +70°C)........245mW Operating Temperature Range .........................-40°C to +125°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. .


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