MAX803L MAXIM | Alldatasheet
Document overview
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Technical content
The MAX803/MAX809/MAX810 are microprocessor (µP) supervisory circuits used to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external compo- nents and adjustments when used with +5V, +3.3V, +3.0V, or +2.5V-powered circuits. These circuits perform a single function: they assert a reset signal whenever the V CC supply voltage declines below a preset threshold, keeping it asserted for at least 140ms after V CC has risen above the reset thresh- old. Reset thresholds suitable for operation with a vari- ety of supply voltages are available. The MAX803 has an open-drain output stage, while the MAX809/MAX810 have push-pull outputs. The MAX803’s open-drain RESET output requires a pull-up resistor that can be connected to a voltage higher than V CC. The MAX803/MAX809 have an active-low RESET output, while the MAX810 has an active-high RESET output. The reset comparator is designed to ignore fast transients on V CC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1V. Low supply current makes the MAX803/MAX809/ MAX810 ideal for use in portable equipment. The MAX803 is available in a 3-pin SC70 package, and the MAX809/MAX810 are available in 3-pin SC70 or SOT23 packages.
Applications
Critical µP and µC Power Monitoring Portable/Battery-Powered Equipment Automotive o Precision Monitoring of +2.5V, +3V, +3.3V, and +5V Power-Supply Voltages o Fully Specified Over Temperature o Available in Three Output Configurations Open-Drain RESET Output (MAX803) Push-Pull RESET Output (MAX809) Push-Pull RESET Output (MAX810) o 140ms min Power-On Reset Pulse Width o 12µA Supply Current o Guaranteed Reset Valid to VCC = +1V o Power Supply Transient Immunity o No External Components o 3-Pin SC70 and SOT23 Packages MAX803L/M/R/S/T/Z, MAX809J/L/M/R/S/T/Z, MAX810L/M/R/S/T/Z 3-Pin Microprocessor Reset Circuits TOP VIEW RESET (RESET) 1GND VCC MAX803 MAX809 MAX810 SC70-3/SOT23-3 ( ) ARE FOR MAX810. MAX803 AVAILABLE IN SC70-3 ONLY. MAX803 MAX809 VCC VCC RPULL-UP* RESET RESET INPUT GND VCC GND *MAX803 ONLY µP Pin Configuration Typical Operating Circuit 19-0344; Rev 4; 12/99 Note: These parts are offered in 2.5k or 10k reels, and must be ordered in 2.5k or 10k increments. Order MAX803_EXR-T for 2.5k reels and MAX803_EXR-T10 for 10k reels. Insert the desired suffix letter from the Selector Guide into the blank to complete the part number. All versions of these products may not be available at the time of announcement. Contact factory for availability. 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 SC70-3-40°C to +105°CMAX803_EXR-T10
3 SC70-3
PIN-PACKAGETEMP. RANGE -40°C to +105°CMAX803_EXR-T PART
3 SC70-3-40°C to +105°CMAX809_EXR-T10
3 SC70-3-40°C to +105°CMAX809_EXR-T
3 SOT23-3-40°C to +105°CMAX809_EUR-T10
3 SOT23-3-40°C to +105°CMAX809_EUR-T
3 SC70-3-40°C to +105°CMAX810_EXR-T10
3 SC70-3-40°C to +105°CMAX810_EXR-T
3 SOT23-3-40°C to +105°CMAX810_EUR-T10
3 SOT23-3-40°C to +105°CMAX810_EUR-T
Ordering Information
MAX803L/M/R/S/T/Z, MAX809J/L/M/R/S/T/Z, MAX810L/M/R/S/T/Z 3-Pin Microprocessor Reset Circuits ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC = full range, TA = -40°C to +105°C, unless otherwise noted. Typical values are at T A = +25°C, VCC = 5V for L/M/J versions, VCC = 3.3V for T/S versions, VCC = 3V for R version, and VCC = 2.5V for Z version.) (Note 1) 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 specificatio ns is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Terminal Voltage (with respect to GND) Continuous Power Dissipation (TA = +70°C) TA = -40°C to +85°C TA = -40°C to +105°C TA = 0°C to +70°C TA = +85°C to +105°C MAX8_ _Z (SC70 only) TA = -40°C to +85°C VCC < 3.6V, MAX8_ _R/S/T TA = +85°C to +105°C MAX8_ _L CONDITIONS 2.21 2.45 2.25 2.38 2.28 2.32 2.35 2.50 2.76 4.50 4.75 V 4.56 4.63 4.70 VTHReset Threshold 24 60 ICCSupply Current (SOT23) 1.2 5.5 V1.0 5.5VCC Range µA 12 30 16 35 ICCSupply Current (SC70) VCC < 5.5V, MAX8_ _L/M VCC < 3.6V, MAX8_ _R/S/T VCC < 5.5V, MAX8_ _L/M VCC < 3.6V, MAX8_ _R/S/T/Z 17 50 100 100 UNITSMIN TYP MAXSYMBOLPARAMETER VCC < 5.5V, MAX8_ _J/L/M VCC < 5.5V, MAX8_ _L/M MAX8_ _S 2.89 2.93 2.96TA = +25°C VCC < 3.6V, MAX8_ _R/S/T/Z TA = +25°C TA = -40°C to +85°C MAX8_ _M 4.25 4.50 2.85 3.00TA = -40°C to +85°C MAX8_ _R 2.55 2.70 2.59 2.63 2.66 2.78 3.08TA = +85°C to +105°C TA = +25°C TA = -40°C to +85°C 4.31 4.38 4.45 4.40 4.86TA = +85°C to +105°C TA = +25°C TA = -40°C to +85°C MAX809J (SOT only) 3.93 4.00 4.06 4.16 4.56TA = +85°C to +105°C TA = +25°C 3.89 4.10TA = -40°C to +85°C 3.80 4.20TA = +85°C to +105°C MAX8_ _T 2.92 3.23 3.00 3.15 3.04 3.08 3.11TA = +25°C TA = -40°C to +85°C TA = +85°C to +105°C TA = +85°C to +105°C TA = +25°C TA = -40°C to +85°C TA = +85°C to +105°C
MAX803L/M/R/S/T/Z, MAX809J/L/M/R/S/T/Z, MAX810L/M/R/S/T/Z 3-Pin Microprocessor Reset Circuits Note 1: Production testing done at TA = +25°C; limits over temperature guaranteed by design only. Note 2: RESET output for MAX803/MAX809; RESET output for MAX810. TA = -40°C to +85°C TA = +85°C to +105°C TA = -40°C to +85°C VCC = VTH to (VTH - 100mV) CONDITIONS 140 240 460Reset Active Timeout Period (SC70) ms100 840 140 240 560Reset Active Timeout Period (SOT23) µs20VCC to Reset Delay (Note 2) ppm/°C30Reset Threshold Tempco UNITSMIN TYP MAXSYMBOLPARAMETER TA = +85°C to +105°C VCC = VTH max, ISINK = 3.2mA, MAX810L/M VCC = VTH max, ISINK = 1.2mA, MAX810R/S/T/Z VCC > VTH max, ISOURCE = 800µA, MAX809J/L/M VCC > VTH max, ISOURCE = 500µA, MAX809R/S/T/Z VCC = VTH min, ISINK = 1.2mA, MAX803R/S/T/Z, MAX809R/S/T/Z VCC = VTH min, ISINK = 3.2mA, MAX803L/M, MAX809J/L/M VCC > VTH, RESET deasserted VCC > 1.0V, ISINK = 50µA 1.8V < VCC < VTH min, ISOURCE = 150µA µA1 RESET Open-Drain Output Leakage Current (MAX803) V0.8VCCVOH RESET Output Voltage High (push-pull active high, MAX810) ms100 840 0.4 V 0.3 VOL RESET Output Voltage Low (push-pull active high, MAX810) VCC - 1.5 V 0.8VCC VOH RESET Output Voltage High (push-pull active low, MAX809) V 0.3 VOL RESET Output Voltage Low (push-pull active low and open- drain active-low, MAX803 and MAX809) 0.4 0.3 POWER-DOWN RESET DELAY vs. TEMPERATURE (MAX8_ _R/S/T/Z) 100 MAX803-TOC3 TEMPERATURE (°C) POWER-DOWN RESET DELAY (µs) -40 8520-20 0 6040 VOD = VTH - VCC VOD = 20mV VOD = 10mV VOD = 200mV VOD = 100mV Typical Operating Characteristics (VCC = full range, T A = -40°C to +105°C, unless otherwise noted. Typical values are at T A = +25°C, V CC = +5V for L/M/J versions, VCC = +3.3V for T/S versions, VCC = +3V for R version, and VCC = +2.5V for Z version.) ELECTRICAL CHARACTERISTICS (continued) (VCC = full range, TA = -40°C to +105°C, unless otherwise noted. Typical values are at T A = +25°C, VCC = 5V for L/M/J versions, VCC = 3.3V for T/S versions, VCC = 3V for R version, and VCC = 2.5V for Z version.) (Note 1) -40 20 40 -20 0 60 85 SUPPLY CURRENT vs. TEMPERATURE (SC70 PACKAGE, NO LOAD) MAX803 toc01 TEMPERATURE (° C) SUPPLY CURRENT (µA) MAX8_ _R/S/T, VCC = 3.3V MAX8_ _L/M/R/S/T/Z, VCC = 1V MAX8_ _Z, VCC = 2.5V MAX8_ _L/M, VCC = 5V
MAX803L/M/R/S/T/Z, MAX809J/L/M/R/S/T/Z, MAX810L/M/R/S/T/Z 3-Pin Microprocessor Reset Circuits Typical Operating Characteristics (continued) (VCC = full range, T A = -40°C to +105°C, unless otherwise noted. Typical values are at T A = +25°C, V CC = +5V for L/M/J versions, VCC = +3.3V for T/S versions, VCC = +3V for R version, and VCC = +2.5V for Z version.) 225 POWER-UP RESET TIMEOUT vs. TEMPERATURE 245 250 MAX803-TOC5 TEMPERATURE (° C) POWER-UP RESET TIMEOUT (ms) 235 230 240 -40 8520-20 0 6040 MAX8_ _R/S/T/Z MAX8_ _J/L/M 0.997 NORMALIZED RESET THRESHOLD vs. TEMPERATURE 1.001 1.002 1.003 MAX803-TOC6 TEMPERATURE (° C) NORMALIZED THRESHOLD 0.999 0.998 1.000 -40 8520-20 0 6040 3.08MAX803T 4.38 4.63MAX803L MAX803M 2.93MAX809S 3.08MAX809T 4.00MAX809J Open-Drain RESET Open-Drain RESET 4.38MAX809M Open-Drain RESET Push-Pull RESET 2.93MAX803S Push-Pull RESET Push-Pull RESET 2.63MAX803R Push-Pull RESET Open-Drain RESET 2.32MAX803Z Open-Drain RESET Open-Drain RESET 4.63MAX809L Push-Pull RESET OUTPUT TYPERESET THRESHOLD (V)PART/SUFFIX ADAA ACAA CWAA ABAA AAAA TOP MARK ABB ABA AAZ AAQ AAP AAO ABC ABD ABE AAN AHAA AGAA AFAA AAU AAT AAS AAR 4.38MAX810M 4.63MAX810L 2.32MAX809Z 2.63MAX809R Push-Pull RESET Push-Pull RESET Push-Pull RESET Push-Pull RESET AKAA AJAA AAX AAV 2.93MAX810S 3.08MAX810T Push-Pull RESET Push-Pull RESET MAX810R 2.63 Push-Pull RESET ALAA AAW MAX810Z 2.32 Push-Pull RESET — AAY SOT SC70 Selector Guide POWER-DOWN RESET DELAY vs. TEMPERATURE (MAX8_ _J/L/M) 100 120 140 MAX803-TOC4 TEMPERATURE (° C) POWER-DOWN RESET DELAY (µs) -40 8520-20 0 6040 VOD = VTH - VCC VOD = 10mV VOD = 100mV VOD = 200mV VOD = 20mV
MAX809/MAX810 have a push-pull output stage. put to any supply between 0 and 6V. additional transient immunity. no longer sinks current—it becomes an open circuit. nected to RESET can drift to undetermined voltages. Figure 2. RESET Valid to VCC = Ground Circuit
1 GND Ground
Figure 1. Maximum Transient Duration Without Causing a
3 VCC
MAX803L/M/R/S/T/Z, MAX809J/L/M/R/S/T/Z, MAX810L/M/R/S/T/Z 3-Pin Microprocessor Reset Circuits
Package Information
SC70, 3L.EPS
MAX803L/M/R/S/T/Z, MAX809J/L/M/R/S/T/Z, MAX810L/M/R/S/T/Z 3-Pin Microprocessor Reset Circuits Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circu it patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1999 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. Package Information (continued) SOTPO3L.EPS