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MAX6443US23L Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX6443US23L Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 13 page The area below the curves of the graph is the region in which these devices typically do not generate a reset pulse. This graph was generated using a falling pulse applied to VCC, starting above the actual reset thresh- old (VTH) and ending below it by the magnitude indicat- ed (reset threshold overdrive). As the magnitude of the transient increases (VCC goes further below the reset threshold), the maximum allowable pulse width decreases. Typically, a VCC transient that goes 100mV below the reset threshold and lasts 20µs or less does not cause a reset pulse to be asserted. µP Reset Circuits with Long Manual Reset Setup Period _______________________________________________________________________________________ 9 MAX6443 MAX6445 MAX6447 MAX6449 MAX6451 RESET VCC VCC GND 100k Ω Figure 9. Ensuring RESET Valid to VCC = 0V PART NO. SUFFIX ( _ _ ) VCC NOMINAL VOLTAGE THRESHOLD (V) 46 4.625 44 4.375 31 3.075 29 2.925 26 2.625 23 2.313 22 2.188 17 1.665 16 1.575 Table 1. Reset Voltage Threshold PART NO. SUFFIX ( _ ) MANUAL RESET SETUP PERIOD (s) K 10.08 L 6.72 S 3.36 T 1.68 Table 2. Manual Reset Setup Period (tMR) PART TOP MARK PART TOP MARK MAX6443US16L KAFW MAX6448UK16L AEER MAX6443US23L KAFX MAX6448UK23L AEES MAX6443US26L KAFY MAX6448UK26L AEET MAX6443US29L KAFK MAX6448UK29L AEEU MAX6443US46L KAFZ MAX6448UK46L AEEV MAX6444US16L KAGA MAX6449UT16L ABEL MAX6444US23L KAGB MAX6449UT23L ABNP MAX6444US26L KAGC MAX6449UT26L ABNQ MAX6444US29L KAGD MAX6449UT29L ABNR MAX6444US46L KAFL MAX6449UT46L ABNS MAX6445UK16L AEEF MAX6450UT16L ABEM MAX6445UK23L AEEG MAX6450UT23L ABNX MAX6445UK26L AEEH MAX6450UT26L ABNY MAX6445UK29L AEEI MAX6450UT29L ABNZ MAX6445UK46L AEAO MAX6450UT46L ABOA MAX6446UK16L AEEN MAX6451UT16L ABNT MAX6446UK23L AEEO MAX6451UT23L ABEN MAX6446UK26L AEEP MAX6451UT26L ABNU MAX6446UK29L AEAP MAX6451UT29L ABNV MAX6446UK46L AEEQ MAX6451UT46L ABNW MAX6447UK16L AEEJ MAX6452UT16L ABOB MAX6447UK23L AEEK MAX6452UT23L ABOC MAX6447UK26L AEAQ MAX6452UT26L ABOD MAX6447UK29L AEEL MAX6452UT29L ABOE MAX6447UK46L AEEM MAX6452UT46L ABOF Table 3. Standard Versions Table |
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