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MAX392MJE Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX392MJE Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 12 page Precision, Quad, SPST Analog Switches _______________________________________________________________________________________ 7 __________Applications Information Overvoltage Protection Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maxi- mum ratings, because stresses beyond the listed rat- ings may cause permanent damage to the devices. Always sequence V+ on first, followed by V-, and then logic inputs. If power-supply sequencing is not possi- ble, add two small signal diodes in series with supply pins for overvoltage protection (Figure 1). Adding diodes reduces the analog signal range to 1V below V+ and 1V below V-, but low switch resistance and low leakage characteristics are unaffected. Device opera- tion is unchanged, and the difference between V+ and V- should not exceed 17V. ______________________________________________________________Pin Description POSITIVE SUPPLY COM NEGATIVE SUPPLY NO Vg V+ V- Figure 1. Overvoltage Protection Using Two External Blocking Diodes Positive Supply-Voltage Input—connected to substrate V+ 13 No Connect—not internally connected N.C. 12 Ground GND 5 Negative Supply-Voltage Input V- 4 PIN Switch Inputs NO1–NO4 or NC1–NC4 3, 14, 11, 6 Analog Switch Common Terminal COM1–COM4 2, 15, 10, 7 Inputs IN1–IN4 1, 16, 9, 8 FUNCTION NAME |
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