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MAX6875ETJ Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX6875ETJ Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 40 page General Description The MAX6874/MAX6875 EEPROM-configurable, multi- voltage supply sequencers/supervisors monitor several voltage detector inputs and general-purpose logic inputs, and provide programmable open-drain outputs for highly configurable power-supply sequencing appli- cations. The MAX6874 provides six voltage monitor inputs, four general-purpose inputs, and eight program- mable open-drain outputs. The MAX6875 provides four voltage monitor inputs, three general-purpose inputs, and five programmable open-drain outputs. Manual reset and margin disable inputs provide additional flexibility. All voltage detectors offer configurable thresholds for undervoltage detection. One high-voltage input (IN1) provides detector threshold voltages from +2.5V to +13.2V in 50mV increments, or from +1.25V to +7.625V in 25mV increments. A second positive input (IN2) pro- vides detector threshold voltages from +2.5V to +5.5V in 50mV increments, or from +1.25V to +3.05V in 25mV increments. Positive inputs (IN3–IN6) provide detector threshold voltages from +1V to +5.5V in 20mV incre- ments, or from +0.5V to +3.05V in 10mV increments. Programmable output stages control power-supply sequencing or system resets/interrupts. Program the open-drain outputs as active-high or active-low. Programmable timing delay blocks configure each output to wait between 25µs and 1600ms before deasserting. An SMBus™/I2C-compatible serial data interface pro- grams and communicates with the configuration EEP- ROM, the configuration registers, and the internal 4kb user EEPROM of the MAX6874/MAX6875. The MAX6874/MAX6875 are available in a 7mm x 7mm x 0.8mm 32-pin thin QFN package and operate over the extended temperature range (-40°C to +85°C). Applications Telecommunications/Central Office Systems Networking Systems Servers/Workstations Base Stations Storage Equipment Multimicroprocessor/Voltage Systems Features ♦ Six (MAX6874) or Four (MAX6875) Configurable Input Voltage Detectors One High Voltage Input (+1.25V to +7.625V or +2.5V to +13.2V Thresholds) One Voltage Input (+1.25V to +3.05V or +2.5V to +5.5V) Four (MAX6874) or Two (MAX6875) Positive Voltage Inputs (+0.5V to +3.05V or +1V to +5.5V) ♦ Four (MAX6874) or Three (MAX6875) General- Purpose Logic Inputs ♦ Two Configurable Watchdog Timers ♦ Eight (MAX6874) or Five (MAX6875) Programmable Open-Drain Outputs Active-High or Active-Low Timing Delays from 25µs to 1600ms ♦ Margining Disable and Manual Reset Controls ♦ 4kb Internal User EEPROM Endurance: 100,000 Erase/Write Cycles Data Retention: 10 Years ♦ I2C/SMBus-Compatible Serial Configuration/ Communication Interface ♦ ±1% Threshold Accuracy EEPROM-Programmable, Hex/Quad, Power-Supply Sequencers/Supervisors ________________________________________________________________ Maxim Integrated Products 1 Ordering Information 19-3438; Rev 0; 10/04 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. EVALUATION KIT AVAILABLE Pin Configurations, Typical Operating Circuit, and Selector Guide appear at end of data sheet. PART TEMP RANGE PIN- PACKAGE PKG CODE MAX6874 ETJ -40°C to +85°C 32 Thin QFN T3277-2 MAX6875 ETJ -40°C to +85°C 32 Thin QFN T3277-2 SMBus is a trademark of Intel Corp. |
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