MAX6731 MAXIM [Maxim Integrated Products], MAX6731 Datasheet
MAX6731
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MAX6731 Summary of contents
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... MAX6732 UT_ _D_ -T MAX6733 UT_ _D_ -T MAX6734 KA_ _D_ -T MAX6735 KA_ _D_ -T *Note: Insert the threshold level suffixes for V (Table 1) after “UT” or “KA.” For the MAX6730/MAX6731, insert Applications only the V CC timeout delay (Table 2) after “D” to complete the part number. ...
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Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output ABSOLUTE MAXIMUM RATINGS MR, WDI to GND .....................-0. RSTIN RST, WDO to GND (open drain)...............................-0.3V to +6V RST, WDO to GND (push-pull) .................-0.3V to ...
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... V CC Reset Timeout Period ADJUSTABLE RESET COMPARATOR INPUT (MAX6734/MAX6735) RSTIN Input Threshold RSTIN Input Current RSTIN Hysteresis RSTIN to Reset Output Delay MANUAL RESET INPUT (MAX6730/MAX6731/MAX6734/MAX6735) MR Input Threshold MR Minimum Pulse Width MR Glitch Rejection MR to Reset Output Delay MR Pullup Resistance _______________________________________________________________________________________ SYM ...
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Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output ELECTRICAL CHARACTERISTICS (continued +0.8V to +5.5V -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER SYM B O ...
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Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output ( +5V +3.3V +25°C, unless otherwise noted SUPPLY CURRENT vs. TEMPERATURE ( +5V +3.3V ...
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Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output ( +5V +3.3V +25°C, unless otherwise noted NORMALIZED TIMEOUT PERIOD vs. TEMPERATURE 1.0040 1.0035 1.0030 1.0025 1.0020 1.0015 1.0010 1.0005 1.0000 0.9995 ...
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... Open-drain versions require an external pullup resistor. GND Ground Active-Low Watchdog Output. The MAX6730/MAX6732/MAX6734 provide an open- drain WDO output. The MAX6731/MAX6733/MAX6735 provide a push-pull WDO output. WDO asserts low when no low-to-high or high-to-low transition occurs on WDO WDI within the watchdog timeout period ( RSTIN ...
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... MR releases high. 0.833 Whenever V CC 0.788 threshold before the end of the reset timeout period, the internal timer restarts. The MAX6730/MAX6732/ MAX6734 provide an open-drain RST output, and the MAX6731/ MAX6733/MAX6735 provide a push-pull RST output. ACTIVE TIMEOUT PERIOD MIN (ms) MAX (ms) 1.1 2.2 8 ...
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Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output Manual Reset Input Many µP-based products require manual reset capabil- ity, allowing the operator, a test technician, or external logic circuitry to initiate a reset. A logic low on MR asserts the ...
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Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output The RSTIN comparator derives power from V the input voltage must remain less than or equal Low leakage current at RSTIN allows the use of CC large-valued resistors, resulting ...
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... The Typical Operating Characteristics show Maximum Transient Duration vs. Reset Threshold ______________________________________________________________________________________ <t <t >t WD-L WD-S WD Reset Pins CC CC Transients CC _ transients (glitch- Figure 5. Interfacing to µPs with Bidirectional Reset I <t WD-L RESET TO OTHER SYSTEM COMPONENTS MAX6731 10kΩ MAX6733 RST RESET MAX6735 GND µP GND 11 ...
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Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output Overdrive, for which reset pulses are not generated. The graph was produced using falling V starting above V and ending below the reset thresh- TH old by the magnitude indicated (reset threshold ...
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... Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output PART MAX6730UTLD3-T MAX6730UTSD3-T MAX6730UTRD3-T MAX6730UTZD3-T MAX6730UTVD3-T MAX6731UTLD3-T MAX6731UTTD3-T MAX6731UTSD3-T MAX6731UTRD3-T MAX6731UTZD3-T MAX6731UTVD3-T MAX6732UTLTD3-T MAX6732UTSYD3-T MAX6732UTSVD3-T MAX6732UTRVD3-T MAX6732UTSHD3-T MAX6732UTTGD3-T MAX6732UTSDD3-T MAX6732UTZWD3-T MAX6732UTYHD3-T MAX6732UTZGD3-T MAX6732UTYDD3-T MAX6732UTVHD3-T MAX6732UTWGD3-T MAX6732UTVDD3-T MAX6733UTLTD3-T MAX6733UTSYD3-T MAX6733UTSVD3-T MAX6733UTRVD3-T MAX6733UTSHD3-T ...
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... MAX6731 WDO 3 SOT23-6 Typical Operating Circuit +0.9V V CORE RSTIN RST MAX6730 WDI WDO PUSHBUTTON MR SWITCH GND VOLTAGE PART NUMBER MONITORS MAX6730 1 MAX6731 1 MAX6732 2 MAX6733 2 MAX6734 3 MAX6735 3 14 ______________________________________________________________________________________ RST MAX6732 5 WDI GND 2 5 WDI MAX6733 ...
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Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output (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.) ______________________________________________________________________________________ Package Information 15 ...
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Single-/Dual-/Triple-Voltage µP Supervisory Circuits with Independent Watchdog Output (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 PIN 1 I.D. DOT ...