DS1818R-20-U+ Maxim Integrated, DS1818R-20-U+ Datasheet
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DS1818R-20-U+
Specifications of DS1818R-20-U+
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DS1818R-20-U+ Summary of contents
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... RSTIN/PFI MR R2 MAX67_ _ PUSHBUTTON SWITCH ________________________________________________________________ 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. Supervisory Circuits ♦ from 1.58V to 4.63V ♦ Voltages from 0.79V to 3.08V ♦ ...
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... Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with respect to GND ..........................................................-0. RST, RST1, RST2, PFO, RST ................-0.3V to +6V Open-Drain Push-Pull RST, RST1, PFO, RST...............-0. Push-Pull RST2 .........................................-0. RSTIN, PFI, MR, WDI ................................................-0.3V to +6V Input Current/Output Current (all pins) ...............................20mA Stresses beyond those listed under “ ...
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... MR to Reset Delay MR Pullup Resistance WATCHDOG INPUT (MAX6721–MAX6729) Watchdog Timeout Period WDI Pulse Width WDI Input Voltage WDI Input Current _______________________________________________________________________________________ Supervisory Circuits = -40°C to +85°C, unless otherwise noted. Typical values are CONDITIONS 100m ...
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... Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits ELECTRICAL CHARACTERISTICS (continued 0.8V to 5.5V, GND = PARAMETER SYMBOL RESET/POWER-FAIL OUTPUTS RST/RST1/RST2/PFO Output LOW V (Push-Pull or Open-Drain) RST/RST1/PFO Output HIGH V (Push-Pull Only) RST2 Output HIGH V (Push-Pull Only) RST Output HIGH V (Push-Pull Only) RST Output LOW ...
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... TEMPERATURE (°C) NORMALIZED V RESET THRESHOLD CC vs. TEMPERATURE 1.004 1.003 1.002 1.001 1.000 0.999 0.998 0.997 0.996 -40 - TEMPERATURE (°C) _______________________________________________________________________________________ Supervisory Circuits Typical Operating Characteristics SUPPLY CURRENT vs. TEMPERATURE 3.3V 2. TOTAL ...
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... Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits ( 5V 3.3V +25°C, unless otherwise noted RESET INPUT TO RESET OUTPUT DELAY vs. TEMPERATURE 24.4 30mV OVERDRIVE 24.2 24.0 23.8 23.6 23.4 23.2 23.0 22.8 -40 - TEMPERATURE (°C) MAX6715/ MAX6717/ MAX6719/ MAX6721/ MAX6716 MAX6718 MAX6720 MAX6722 _______________________________________________________________________________________ Typical Operating Characteristics (continued) POWER-FAIL INPUT TO POWER-FAIL OUTPUT DELAY vs ...
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... Dual/Triple Ultra-Low-Voltage SOT23 µP MAX6715/ MAX6717/ MAX6719/ MAX6721/ MAX6716 MAX6718 MAX6720 MAX6722 5 — — _______________________________________________________________________________________ Supervisory Circuits PIN MAX6723/ MAX6725/ MAX6727 MAX6724 MAX6726 — — — — — Pin Description (continued) ...
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... Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits MAX6715/ MAX6717/ MAX6719/ MAX6721/ MAX6716 MAX6718 MAX6720 MAX6722 — — — — — 5 — — — 8 _______________________________________________________________________________________ PIN MAX6723/ MAX6725/ MAX6727 MAX6724 MAX6726 — — — — — Pin Description (continued) NAME ...
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... above 0.8V Threshold Levels Input voltage threshold level combinations are indicat two-letter code in the Reset Voltage Threshold _______________________________________________________________________________________ Supervisory Circuits PIN MAX6723/ MAX6725/ MAX6727 MAX6724 MAX6726 — — — — ...
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... Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits restarts. The MAX6715/MAX6717/MAX6719/MAX6721/ MAX6723/MAX6725/MAX6727/MAX6728 contain open- drain reset outputs, while the MAX6716/MAX6718/ MAX6720/MAX6722/MAX6724/MAX6726/MAX6729 contain push-pull reset outputs. The MAX6727 provides two separate open-drain RST outputs driven by the same internal logic. Manual Reset Input Many microprocessor-based products require manual reset capability, allowing the operator, a test techni- cian, or external logic circuitry to initiate a reset ...
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... For most applications, 100kΩ is adequate. This config- uration does not work for the open-drain outputs of the MAX6715/MAX6717/MAX6719/MAX6721/MAX6723/ MAX6725/MAX6727/MAX6728. For push-pull, active- high RST output connect the external resistor as a pullup from RST ______________________________________________________________________________________ Supervisory Circuits ...
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... Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits PFO V MAX6728/ EXT MAX6729 R1 PFI PFO V = DESIRED V GOOD EXT DESIRED V FAIL EXT (FOR PUSH-PULL PFO 200kΩ (FOR > 2.5µA R2 CURRENT (( GOOD PFI GND GOOD Figure 5. Adding Hysteresis to Power-Fail for Push-Pull PFO Monitoring an Additional Power Supply These µ ...
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... Dual/Triple Ultra-Low-Voltage SOT23 µ REF RSTIN/PFI V REF V REF/2 ______________________________________________________________________________________ Supervisory Circuits Functional Diagram PULLUP RESET RESET TIMEOUT OUTPUT PERIOD DRIVER WATCHDOG TIMER RST RST PFO WDI 13 ...
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... Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits NUMBER OF OPEN- PART VOLTAGE DRAIN NUMBER RESET MONITORS MAX6715 2 MAX6716 2 MAX6717 2 MAX6718 2 MAX6719 3 MAX6720 3 MAX6721 2 MAX6722 2 MAX6723 3 MAX6724 3 MAX6725 3 MAX6726 3 MAX6727 3 MAX6728 3 MAX6729 3 Ordering Information (continued) PART TEMP RANGE MAX6721UT_ _D_ -T -40°C to +85°C MAX6722UT_ _D_ -T -40° ...
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... Standard versions require 2,500 piece order increments and are typically held in sample stock. There is a 10,000 order increment on nonstandard versions. Other thresh- old voltages may be available, contact factory for availability. ______________________________________________________________________________________ Supervisory Circuits Table 2. Reset Timeout Period Suffix Guide V 2 NOMINAL ...
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... Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits TOP VIEW RST1 1 6 MAX6715/ GND 2 5 MAX6716 SOT23 RST 1 6 MAX6721/ GND 2 5 MAX6722 SOT23 RST 1 GND 2 WDI 3 RST 4 16 ______________________________________________________________________________________ V 1 RST MAX6717/ RST2 GND 2 MAX6718 ...
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... Dual/Triple Ultra-Low-Voltage SOT23 µP (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) ______________________________________________________________________________________ Supervisory Circuits Package Information PACKAGE OUTLINE, SOT-23, 5L 21-0057 ...
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... Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 18 ______________________________________________________________________________________ Package Information (continued) PACKAGE OUTLINE, SOT 6L BODY 21-0058 ...
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... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 19 © 2005 Maxim Integrated Products ...