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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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LTC1821 Datenblatt(PDF) 4 Page - Linear Technology |
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LTC1821 Datenblatt(HTML) 4 Page - Linear Technology |
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4 / 20 page  LTC2757 4 2757f SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Power Supply VDD Supply Voltage l 2.7 5.5 V IDD Supply Current, VDD Digital Inputs = 0V or VDD l 0.5 1 μA Digital Inputs VIH Digital Input High Voltage 3.3V ≤ VDD ≤ 5.5V 2.7V ≤ VDD < 3.3V l l 2.4 2 V V VIL Digital Input Low Voltage 4.5V < VDD ≤ 5.5V 2.7V ≤ VDD ≤ 4.5V l l 0.8 0.6 V V Hysteresis Voltage 0.1 V IIN Digital Input Current VIN = GND to VDD l ±1 μA CIN Digital Input Capacitance VIN = 0V (Note 12) l 6pF Digital Outputs VOH IOH = 200μA l VDD – 0.4 V VOL IOL = 200μA l 0.4 V TIMING CHARACTERISTICS V DD = 5V, V(RIN) = 5V unless otherwise specified. The l denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25°C. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VDD = 4.5V to 5.5V Write and Update Timing t1 I/O Valid to WR Rising Edge Set-Up l 9ns t2 I/O Valid to WR Rising Edge Hold l 9ns t3 WR Pulse Width l 20 ns t4 UPD Pulse Width l 20 ns t5 UPD Falling Edge to WR Falling Edge No Data Shoot-Through l 0ns t6 WR Rising Edge to UPD Rising Edge (Note 12) l 0ns t7 D/S Valid to WR Falling Edge Set-Up Time l 9ns t8 WR Rising Edge to D/S Valid Hold Time l 9ns Readback Timing t13 WR Rising Edge to READ Rising Edge l 9ns t14 READ Falling Edge to WR Falling Edge (Note 12) l 20 ns t15 READ Rising Edge to I/O Propagation Delay CL = 10pF l 30 ns t17 UPD Valid to I/O Propagation Delay CL = 10pF l 30 ns t18 D/S Valid to READ Rising Edge (Note 12) l 9ns t19 READ Rising Edge to UPD Rising Edge No Update l 9ns t20 UPD Falling Edge to READ Falling Edge No Update l 9ns t22 READ Falling Edge to UPD Rising Edge (Note 12) l 9ns t23 I/O Bus Hi-Z to READ Rising Edge (Note 12) l 0ns t24 READ Falling Edge to I/O Bus Active (Note 12) l 20 ns ELECTRICAL CHARACTERISTICS V DD = 5V, V(RIN) = 5V unless otherwise specified. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. |
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