Part # MAX6323-MAX6324 datasheet

Part Manufacturer: Maxim


Part Description: MAX6323 24 DS

Part Details:

19-1838; Rev 4; 12/05 µP Supervisory Circuits with Windowed (Min/Max) Watchdog and Manual Reset MAX6323/MAX6324 General Description Features The MAX6323/MAX6324 microprocessor (µP) supervi- Min/Max (Windowed) Watchdog, sory circuits monitor power supplies and µP activity in 8 Factory-Trimmed Timing Options digital systems. A watchdog timer looks for activity out-side an expected window of operation. Six laser- Pulsed Open-Drain, Active-Low Watchdog Output trimmed reset thresholds are available with ±2.5% Power-On Reset accuracy from +2.32V to +4.63V. Valid RESET output isguaranteed down to VCC = +1.2V. Precision Monitoring of +2.5V, +3.0V, +3.3V, The RESET output is either push-pull (MAX6323) or and +5.0V Power Supplies open-drain (MAX6324). RESET is asserted low when Open-Drain or Push-Pull RESET Outputs VCC falls below the reset threshold, or when the manualreset input (MR) is asserted low. RESET remains assert- Low-Power Operation (23µA typ) ed for at least 100ms after VCC rises above the reset Debounced Manual Reset Input threshold and MR is deasserted. Guaranteed Reset Valid to VCC = +1.2V The watchdog pulse output (WDPO) utilizes an open-drain configuration. It can be triggered either by a fasttimeout fault (watchdog input pulses are too close to Ordering Information each other) or a slow timeout fault (no watchdog inputpulse is observed within the timeout period). The TEMP PIN- RESET PART* watchdog timeout is measured from the last falling RANGE PACKAGE OUTPUT edge of watchdog input (WDI) with a minimum pulse MAX6323_UT__-T -40°C to +125°C 6 SOT23-6 Push-Pull width of 300ns. WDPO is asserted for 1ms when a fault MAX6324_UT_ _-T -40°C to +125°C 6 SOT23-6 Open Drain is observed. Eight laser-trimmed timeout periods are *These devices are factory trimmed to one of eight watchdog- available. timeout windows and one of six reset voltage thresholds. Insert The MAX6323/MAX6324 are offered in a 6-pin SOT23 the letter corresponding to the desired watchdog-timeout window package and operate over the extended temperature (A, B, C, D, E, F, G, or H) into the blank following the number range (-40°C to +125°C). 6323 or 6324 (see Watchdog Timeout table). Insert the two-digitcode (46, 44, 31, 29, 26, or 23) after the letters UT for the desired Applications

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MAX6323-MAX6324.pdf Datasheet