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MAX6333 Dataheets PDF



Part Number MAX6333
Manufacturers Maxim
Logo Maxim
Description 3-Pin / Ultra-Low-Voltage / Low-Power uP Reset Circuits
Datasheet MAX6333 DatasheetMAX6333 Datasheet (PDF)

19-1411; Rev 0; 12/98 3-Pin, Ultra-Low-Voltage, Low-Power µP Reset Circuits General Description The MAX6332/MAX6333/MAX6334 microprocessor (µP) supervisory circuits monitor the power supplies in 1.8V to 3.3V µP and digital systems. They increase circuit reliability and reduce cost by eliminating external components and adjustments. These devices perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for a pres.

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19-1411; Rev 0; 12/98 3-Pin, Ultra-Low-Voltage, Low-Power µP Reset Circuits General Description The MAX6332/MAX6333/MAX6334 microprocessor (µP) supervisory circuits monitor the power supplies in 1.8V to 3.3V µP and digital systems. They increase circuit reliability and reduce cost by eliminating external components and adjustments. These devices perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for a preset timeout period after VCC has risen above the reset threshold. The only difference among the three devices is their output. The MAX6333 (push/pull) and MAX6334 (open-drain) have an active-low RESET output, while the MAX6332 (push/pull) has an active-high RESET output. The MAX6332/MAX6333 are guaranteed to be in the correct state for VCC down to 0.7V. The MAX6334 is guaranteed to be in the correct state for VCC down to 1.0V. The reset comparator in these ICs is designed to ignore fast transients on VCC. Reset thresholds are factorytrimmable between 1.6V and 2.5V, in approximately 100mV increments. There are 15 standard versions available (2,500 piece minimum-order quantity); contact the factory for availability of nonstandard versions (10,000 piece minimum-order quantity). For space-critical applications, the MAX6332/MAX6333/MAX6334 come packaged in a 3-pin SOT23. o Low 3.3µA Supply Current o Precision Monitoring of 1.8V and 2.5V PowerSupply Voltages o Reset Thresholds Available from 1.6V to 2.5V, in Approximately 100mV Increments o Fully Specified over Temperature o Three Power-On Reset Pulse Widths Available (1ms min, 20ms min, 100ms min) o Low Cost o Three Available Output Structures: Push/Pull RESET, Push/Pull RESET, Open-Drain RESET o Guaranteed RESET/RESET Valid to VCC = 0.7V (MAX6332/MAX6333) o Power-Supply Transient Immunity o No External Components o 3-Pin SOT23 Package o Pin-Compatible with MAX809/MAX810 and MAX6326/MAX6327/MAX6328 Features o Ultra-Low 0.7V Operating Supply Voltage MAX6332/MAX6333/MAX6334 Applications Pentium II™ Computers Computers Controllers Intelligent Instruments Critical µP/µC Power Monitoring Portable/Battery-Powered Equipment Automotive PART* MAX6332UR__D_-T MAX6333UR__D_-T MAX6334UR__D_-T Ordering Information TEMP. RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 3 SOT23-3 3 SOT23-3 3 SOT23-3 Typical Operating Circuit and Pin Configuration appear at end of data sheet. Selector Guide appears at end of data sheet. * These devices are available in factory-set VCC reset thresholds from 1.6V to 2.5V, in approximately 0.1V increments. Choose the desired reset threshold suffix from Table 1 and insert it in the blanks following “UR” in the part number. Factory-programmed reset timeout periods are also available. Insert the number corresponding to the desired nominal reset timeout period (1 = 1ms min, 2 = 20ms min, 3 = 100ms min) in the blank following “D” in the part number. There are 15 standard versions with a required order increment of 2500 pieces. Sample stock is generally held on the standard versions only (see Selector Guide). Contact the factory for availability of nonstandard versions (required order increment is 10,000 pieces). All devices available in tape-and-reel only. Pentium II is a trademark of Intel Corp. ________________________________________________________________ Maxim Integrated Products 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769. 3-Pin, Ultra-Low-Voltage, Low-Power µP Reset Circuits MAX6332/MAX6333/MAX6334 ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with respect to GND) VCC ......................................................................-0.3V to +6V Push/Pull RESET, RESET .......................-0.3V to (VCC + 0.3V) Open-Drain RESET ..............................................-0.3V to +6V Input Current (VCC) .............................................................20mA Output Current (RESET, RESET).........................................20mA Rate of Rise, VCC ............................................................100V/µs Continuous Power Dissipation (TA = +70°C) SOT23-3 (derate 4mW/°C above +70°C) ....................320mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +160°C Lead Temperature (soldering, 10sec) .............................+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. ELECTRICAL CHARACTERISTICS (VCC = full range, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA =.


MAX6332 MAX6333 MAX6334


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