Industry's-First µP Supervisory with Windowed Watchdog and Manual Reset
The MAX6323/MAX6324 microprocessor (µP) supervisory circuits monitor power supplies and µP activity in digital systems. A watchdog timer looks for activity outside an expected window of operation. Six laser-trimmed reset thresholds are available with ±2.5% accuracy from +2.32V to +4.63V. Valid active-low RESET output is guaranteed down to VCC = +1.2V. The active-low RESET output is either push-pull (MAX6323) or open-drain (MAX6324). active-low RESET is asserted low when VCC falls below the reset threshold, or when the manual reset input (active-low MR) is asserted low. active-low RESET remains asserted for at least 100ms after VCC rises above the reset threshold and active-low MR is deasserted. The watchdog pulse output (active-low WDPO) utilizes an open-drain configuration. It can be triggered either by a fast timeout fault (watchdog input pulses are too close to each other) or a slow timeout fault (no watchdog input pulse is observed within the timeout period). The watchdog timeout is measured from the last falling edge of watchdog input (WDI) with a minimum pulse width of 300ns. Active-low WDPO is asserted for 1ms when a fault is observed. Eight laser-trimmed timeout periods are available. The MAX6323/MAX6324 are offered in a 6-pin SOT23 package and operate over the extended temperature range (-40°C to +125°C).
title | Download file |
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MAX6323-MAX6324 Data Sheet | MAX6323-MAX6324.pdf |
Part Number | Reset Thresh. (V) | Reset Out | tRESET | Watchdog Feature | Watchdog Timeout | Supervisor Features | Reset Thresh. Accur. (%) | ICC (µA) | Package/Pins | Budgetary Price |
---|---|---|---|---|---|---|---|---|---|---|
min | @ +25°C | max | See Notes | |||||||
MAX6323 | 2.5 to 3.3 3.3 to 5.5 | Active Low Push-Pull | 85ms to 300ms | Input/Output (WDI/WDO) Windowed | 1s to 2s <1s >2s Adjustable | Manual Reset | 1.5 | 45 | SOT/6 | $1.96 @1k |
MAX6324 | Active Low Open Drain | SOT/6 | $1.83 @1k | |||||||
Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
---|---|---|---|---|---|
MAX6324AUT23-T | No Longer Available | SOT,;6 pin;9 mm² | -40°C to +85°C | No | |
MAX6324AUT26-T | No Longer Available | SOT,;6 pin;9 mm² | -40°C to +85°C | No | |
MAX6324AUT29+ | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324AUT29+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324AUT29-T | No Longer Available | MAX6324AUT29+T | SOT,;6 pin;9 mm² | -40°C to +85°C | No |
MAX6324AUT31+ | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324AUT31+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324AUT31-T | No Longer Available | MAX6324AUT31+T | SOT,;6 pin;9 mm² | -40°C to +85°C | No |
MAX6324AUT44-T | No Longer Available | SOT,;6 pin;9 mm² | -40°C to +85°C | No | |
MAX6324AUT46+ | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
MAX6324AUT46+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324AUT46-T | No Longer Available | MAX6324AUT46+T | SOT,;6 pin;9 mm² | -40°C to +85°C | No |
MAX6324BUT23+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324BUT23-T | No Longer Available | MAX6324BUT23+T | SOT,;6 pin;9 mm² | -40°C to +85°C | No |
MAX6324BUT26-T | No Longer Available | SOT,;6 pin;9 mm² | -40°C to +85°C | No | |
MAX6324BUT29+ | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324BUT29+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324BUT29-T | No Longer Available | MAX6324BUT29+T | SOT,;6 pin;9 mm² | -40°C to +85°C | No |
MAX6324BUT31+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324BUT31-T | No Longer Available | MAX6324BUT31+T | SOT,;6 pin;9 mm² | -40°C to +85°C | No |
Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
MAX6324BUT44-T | No Longer Available | SOT,;6 pin;9 mm² | -40°C to +85°C | No | |
MAX6324BUT46+ | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324BUT46+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324BUT46-T | No Longer Available | MAX6324BUT46+T | SOT,;6 pin;9 mm² | -40°C to +85°C | No |
MAX6324CUT23+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324CUT23-T | No Longer Available | MAX6324CUT23+T | SOT,;6 pin;9 mm² | -40°C to +85°C | No |
MAX6324CUT26+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324CUT26-T | No Longer Available | SOT,;6 pin;9 mm² | -40°C to +85°C | No | |
MAX6324CUT29-T | No Longer Available | SOT,;6 pin;9 mm² | -40°C to +85°C | No | |
MAX6324CUT31+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
MAX6324CUT31-T | No Longer Available | MAX6324CUT31+T | SOT,;6 pin;9 mm² | -40°C to +85°C | No |
MAX6324CUT44-T | No Longer Available | SOT,;6 pin;9 mm² | -40°C to +85°C | No | |
MAX6324CUT46+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324CUT46-T | No Longer Available | MAX6324CUT46+T | SOT,;6 pin;9 mm² | -40°C to +85°C | No |
MAX6324DUT23+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324DUT23-T | No Longer Available | MAX6324DUT23+T | SOT,;6 pin;9 mm² | -40°C to +85°C | No |
MAX6324DUT26+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324DUT26-T | No Longer Available | MAX6324DUT26+T | SOT,;6 pin;9 mm² | -40°C to +85°C | No |
MAX6324DUT29-T | No Longer Available | SOT,;6 pin;9 mm² | -40°C to +85°C | No | |
MAX6324DUT31-T | No Longer Available | SOT,;6 pin;9 mm² | -40°C to +85°C | No | |
Part Number | Status | Recommended Replacement | Package | Temp | RoHS |
MAX6324DUT44-T | No Longer Available | SOT,;6 pin;9 mm² | -40°C to +85°C | No | |
MAX6324DUT46-T | No Longer Available | SOT,;6 pin;9 mm² | -40°C to +85°C | No | |
MAX6324EUT23+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324EUT23-T | No Longer Available | SOT,;6 pin;9 mm² | -40°C to +85°C | No | |
MAX6324EUT26+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324EUT26-T | No Longer Available | MAX6324EUT26+T | SOT,;6 pin;9 mm² | -40°C to +85°C | No |
MAX6324EUT29+ | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324EUT29+T | Active | SOT,;6 pin;9 mm² | -40°C to +85°C | Lead Free | |
MAX6324EUT29-T | No Longer Available | MAX6324EUT29+T | SOT,;6 pin;9 mm² | -40°C to +85°C | No |
MAX6324EUT31-T | No Longer Available | SOT,;6 pin;9 mm² | -40°C to +85°C | No |