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MAX634R46-T Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX634R46-T Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 8 page 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. General Description The MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/ MAX6348 microprocessor (µP) supervisory circuits moni- tor 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 compara- tor 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. Applications Computers Intelligent Instruments Controllers Automotive Critical µP and µC Portable/Battery-Powered Power Monitoring Equipment Features o Ultra-Low 1µA (max) Supply Current (MAX6326/MAX6327/MAX6328) o Precision Monitoring of 2.5V, 3V, 3.3V, and 5V Power-Supply Voltages o Reset Thresholds Available from 2.2V to 4.63V o Fully Specified Over Temperature o 100ms (min) Power-On Reset Pulse Width o Low Cost o Available in Three Versions: Push-Pull RESET, Push-Pull RESET, and Open-Drain RESET o Power-Supply Transient Immunity o No External Components o 3-Pin SC70/SOT23 Packages o Pin Compatible with MAX803/MAX809/MAX810 3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits ________________________________________________________________ Maxim Integrated Products 1 1 2 3 VCC (RESET) RESET GND ( ) ARE FOR THE MAX6327/MAX6347. MAX6326 MAX6327 MAX6328 MAX6346 MAX6347 MAX6348 SOT23-3/SC70-3 TOP VIEW Pin Configuration 19-1294; Rev 3; 1/00 †The MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/ MAX6348 are available in factory-set VCC reset thresholds from 2.2V to 4.63V, in approximately 0.1V increments. Choose the desired reset-threshold suffix from Table 1 and insert it in the blank spaces following “R.” There are 21 standard versions with a required order increment of 2500 pieces. Sample stock is gen- erally held on the standard versions only (see the Selector Guide). Required order increment is 10,000 pieces for nonstan- dard versions (Table 2). Contact factory for availability. All devices available in tape-and-reel only. Ordering Information 3 SC70-3 3 SC70-3 3 SC70-3 -40°C to +85°C -40°C to +85°C -40°C to +85°C MAX6348XR_ _-T MAX6347XR_ _-T MAX6346XR_ _-T 3 SC70-3 3 SC70-3 3 SC70-3 PIN-PACKAGE TEMP. RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C MAX6328XR_ _-T MAX6327XR_ _-T MAX6326XR_ _-T PART† 3 SOT23-3 -40°C to +85°C MAX6326UR_ _-T 3 SOT23-3 -40°C to +85°C MAX6327UR_ _-T 3 SOT23-3 -40°C to +85°C MAX6328UR_ _-T 3 SOT23-3 -40°C to +85°C MAX6346UR_ _-T 3 SOT23-3 -40°C to +85°C MAX6347UR_ _-T 3 SOT23-3 -40°C to +85°C MAX6348UR_ _-T Selector Guide appears at end of data sheet. |
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