MAX708ESA Maxim Integrated Products, MAX708ESA Datasheet
MAX708ESA
Specifications of MAX708ESA
Available stocks
Related parts for MAX708ESA
MAX708ESA Summary of contents
Page 1
... MAX706/MAX708 generate a reset pulse below 4.40V. All four parts are available in 8-pin DIP, SO and µMAX packages. _______________________Applications Computers Controllers Intelligent Instruments Automotive Systems Critical µP Power Monitoring µMAX is a registered trademark of Maxim Integrated Products, Inc. __________Typical Operating Circuit UNREGULATED DC MAX667 +5V DC LINEAR REGULATOR V RESET CC ...
Page 2
... Low-Cost, µP Supervisory Circuits ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with respect to GND -0.3V to 6.0V CC All Other Inputs (Note -0. Input Current 20mA CC GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA Output Current (all outputs 20mA Continuous Power Dissipation (T = +70°C) A Plastic DIP (derate 9.09mW/°C above +70° 727mW SO (derate 5.88mW/° ...
Page 3
... Low-Cost, µP Supervisory Circuits ELECTRICAL CHARACTERISTICS (continued 4.75V to 5.5V for MAX705/MAX707/MAX813L PARAMETER MR Pull-Up Current MR Pulse Width Low MR Input Threshold High MR to Reset Out Delay (Note 2) PFI Input Threshold PFI Input Current PFO Output Voltage Note 2: Applies to both RESET in the MAX705–MAX708 and RESET in the MAX707/MAX708/MAX813L. ...
Page 4
... Low-Cost, µP Supervisory Circuits __________________________________________Typical Operating Characteristics MAX705/MAX707 RESET OUTPUT VOLTAGE vs. SUPPLY VOLTAGE + +25° + 2kΩ RESET RESET RESET 330pF GND 0V 500ms/div POWER-FAIL COMPARATOR ASSERTION RESPONSE TIME +5V +5V PFO PFI 1kΩ PFO 30pF 0V +1.25V +1.30V V = +5V CC PFI T = +25°C A +1.20V 400ns/div MAX707/MAX708/MAX813L RESET OUTPUT VOLTAGE vs ...
Page 5
... Low-Cost, µP Supervisory Circuits ______________________________________________________________Pin Description PIN MAX705/MAX706 MAX707/MAX708 DIP/SO DIP/SO µMAX µMAX — — — — 6 — — — — — _______________________________________________________________________________________ MAX813L NAME DIP/SO µMAX Manual-Reset Input triggers a reset pulse when pulled below 0.8V. This active-low input has an inter- ...
Page 6
... Low-Cost, µP Supervisory Circuits WATCHDOG 6 WATCHDOG TRANSITION WDI TIMER DETECTOR V CC TIMEBASE FOR RESET AND 250µA WATCHDOG 1 MR RESET 2 GENERATOR V CC MAX705 4.65V* MAX706 4 MAX813L PFI 1.25V 3 GND * 4.40V FOR MAX7O6 ARE FOR MAX813L ONLY. Figure 1. MAX705/MAX706/MAX813L Block Diagram _______________Detailed Description A microprocessor’ ...
Page 7
... Low-Cost, µP Supervisory Circuits Power-Fail Comparator The power-fail comparator can be used for various pur- poses because its output and noninverting input are not internally connected. The inverting input is internal- ly connected to a 1.25V reference +5V WDI 0V +5V WDO 0V +5V RESET 0V RESET EXTERNALLY TRIGGERED BY MR ...
Page 8
... Low-Cost, µP Supervisory Circuits MAX70_ RESET Figure 5. RESET Valid to Ground Circuit + MAX70_ PFO PFI R2 RESET GND V- + +5V PFO TRIP − − 5 1.25 1.25 V TRIP = , V TRIP R1 R2 Figure 7. Monitoring a Negative Voltage 8 _______________________________________________________________________________________ 1MΩ 1% 130kΩ Figure 6. Monitoring Both +5V and +12V 100kΩ ...
Page 9
... MAX708CPA 0°C to +70°C MAX708CSA 0°C to +70°C MAX708CUA 0°C to +70°C MAX708C/D 0°C to +70°C MAX708EPA -40°C to +85°C MAX708ESA -40°C to +85°C MAX708EUA -40°C to +85°C MAX708MJA -55°C to +125°C MAX813LCPA 0°C to +70°C MAX813LCSA 0°C to +70°C MAX813LCUA 0° ...
Page 10
... Low-Cost, µP Supervisory Circuits ($) 1000-up Price † Pins (typ) max µA Mode Backup SUPPLY I (typ) max mA Mode Operating SUPPLY I Output Battery-On Output Low-Line Input Manual-Reset Comparator Power-Fail Protect Write E C – — – (Ω) Max Resistance On OUT BATT -to-V V (Ω) Max ...
Page 11
... Low-Cost, µP Supervisory Circuits For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status ...
Page 12
... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2010 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...