MAX6748 MAXIM [Maxim Integrated Products], MAX6748 Datasheet
MAX6748
Related parts for MAX6748
MAX6748 Summary of contents
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... Push-Pull or Open-Drain RESET Output Options o Power-Supply Transient Immunity o Small 8-Pin SOT23 Packages PART MAX6746KA_ _-T MAX6746KA_ _/V+T MAX6747KA_ _-T Applications MAX6748KA-T MAX6749KA-T MAX6750KA_ _-T MAX6751KA_ _-T MAX6752KA_ _-T MAX6753KA_ _-T MAX6753KA_ _/V+T Note: “_ _” represents the two number suffix needed when ordering the reset threshold voltage value for the MAX6746/MAX6747 and MAX6750– ...
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Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +6.0V CC SRT, SWT, SET0, SET1, RESET IN, WDS, MR, WDI, to GND .......................................…-0. RESET (Push-Pull) to GND......................…-0. RESET (Open ...
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Reset Circuits with Capacitor-Adjustable ELECTRICAL CHARACTERISTICS (continued +1.2V to +5.5V MIN MAX PARAMETER SYMBOL Fast Watchdog Timeout Period, SET Ratio = 64, (MAX6752/MAX6753) Fast Watchdog Minimum Period (MAX6752/MAX6753) SWT Ramp ...
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Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay (V = +5V +25°C, unless otherwise noted RESET TIMEOUT PERIOD vs. C SRT 1000 100 10 1 0.1 100 1000 10,000 100,000 C (pF) SRT NORMALIZED RESET TIMEOUT ...
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... V TO RESET DELAY CC vs. TEMPERATURE (V FALLING) CC 27.0 V FALLING AT 1mV/µs CC 26.6 26.2 25.8 25.4 25.0 -50 - 100 TEMPERATURE (°C) PIN MAX6746 MAX6748– MAX6752 MAX6747 MAX6751 MAX6753 1 — — — 1 — — — _______________________________________________________________________________________ Reset/Watchdog Timeout Delay Typical Operating Characteristics (continued) RESET AND WATCHDOG TIMEOUT PERIOD vs ...
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... Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay PIN MAX6746 MAX6748– MAX6752 MAX6747 MAX6751 MAX6753 5 5 — — — _______________________________________________________________________________________ Pin Description (continued) NAME Watchdog Select Input. WDS selects the watchdog mode. Connect WDS to ground to select normal mode and the watchdog timeout WDS period ...
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... RESET is guaranteed the correct logic state for V greater than 1V. For applications requiring valid CC reset logic when V Ensuring a Valid RESET Output Down to V The MAX6748–MAX6751 monitor the voltage on RESET IN using an adjustable reset threshold (V an external resistor voltage-divider (Figure 2). Use the following formula to calculate the externally monitored voltage (V V ...
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... V CC RESET OV NORMAL MODE (WDS = GND) Figure 4a. Watchdog Timing Diagram, WDS = GND 8 _______________________________________________________________________________________ guarantee RESET IN threshold accuracy and timing performance. The MAX6748 and MAX6749 can be con- figured to monitor V V MON_TH The MAX6750 and MAX6751 contain both factory trimmed threshold voltages and an adjustable reset ...
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Reset Circuits with Capacitor-Adjustable V CC WDI RESET OV EXTENDED MODE (WDS = Figure 4b. Watchdog Timing Diagram, WDS = V MAX6746–MAX6751 The watchdog’s circuit monitors the µP’s activity. It the µP does ...
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Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay t < t (MIN) WDI WD1 WDI RESET (a) FAST FAULT t > t (MAX) WDI WD2 WDI RESET (b) SLOW FAULT t (MAX) < t < t (MIN) WD1 WDI WD2 ...
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... V In those applications where RESET must be valid down to 0V, add a pulldown resistor between RESET and GND for the MAX6746/MAX6748/MAX6750/MAX6752 decreases CC push/pull outputs. The resistor sinks any stray leakage currents, holding RESET low (Figure 7). The value of the pulldown resistor is not critical ...
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... MAX6746KA16 MAX MAX6746KA23 5.100 MAX6746KA26 4.998 MAX6746KA29 4.896 MAX6746KA46 4.794 MAX6747KA16 4.718 MAX6747KA23 4.590 MAX6747KA26 4.463 MAX6747KA29 4.386 MAX6747KA46 4.284 MAX6748KA 4.182 MAX6749KA 4.080 MAX6750KA16 3.978 MAX6750KA23 3.876 MAX6750KA26 3.774 MAX6750KA29 3.672 MAX6750KA46 3.570 MAX6751KA16 3.468 MAX6751KA23 3.366 MAX6751KA26 3.264 MAX6751KA29 3 ...
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... X X MAX6751 X X MAX6752 X — MAX6753 X — Typical Operating Circuit V IN MAX6749 MAX4751 RESET MAX6748 R2 MAX6749 MAX6750 RESET GND MAX6751 SRT C WDI SRT SWT WDS C SWT WDS = 0 FOR NORMAL MODE WDS = V FOR EXTENDED MODE CC ______________________________________________________________________________________ Reset/Watchdog Timeout Delay STANDARD ...
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Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay REVISION REVISION NUMBER DATE 0 7/02 Initial release 3 12/05 Added the lead-free notation. Added the automotive version of the MAX6746 and the MAX6753 and 4 9/10 revised the Typical Operating Characteristics. ...