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MAX963ESD Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX963ESD Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 16 page Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators _______________________________________________________________________________________ 9 For a large differential input voltage (exceeding 3VF), this protection circuitry increases the input bias current at IN+ (source) and IN- (sink). (IN+ - IN-) - 3VF Input current = ———————— 2 x 200 Input currents with large differential input voltages should not be confused with input bias currents (IB). As long as the differential input voltage is less than 3VF, this input current is less than 2IB. The input circuitry allows the MAX961–MAX964/ MAX997/MAX999’s input common-mode range to extend 100mV beyond both power-supply rails. The output remains in the correct logic state if one or both inputs are within the common-mode range. Taking either input outside the common-mode range causes the input to saturate and the propagation delay to increase. tH tSU tLPW 0V VCC VOS DIFFERENTIAL INPUT VOLTAGE LE Q Q VOL VOH tLPD tPD tSKEW tSKEW VCC 2 VCC 2 VCC 2 Figure 2. MAX961/MAX963 Timing Diagram MAX961-MAX964 MAX997 MAX999 IN+ 200 Ω TO INTERNAL CIRCUITRY IN- 200 Ω TO INTERNAL CIRCUITRY Figure 3. Input Stage Circuitry |
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