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MCP6549 数据表(PDF) 3 Page - Microchip Technology |
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MCP6549 数据表(HTML) 3 Page - Microchip Technology |
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3 / 28 page  2003 Microchip Technology Inc. DS21714C-page 3 MCP6546/7/8/9 AC CHARACTERISTICS SPECIFICATIONS FOR MCP6548 CHIP SELECT FIGURE 1-1: Timing Diagram for the CS pin on the MCP6548. FIGURE 1-2: Propagation Delay Timing Diagram. Electrical Specifications: Unless otherwise indicated, VDD = +1.6V to +5.5V, VSS = GND, TA = 25°C, VIN+ = VDD/2, Step = 200 mV, Overdrive = 100 mV, RPU =2.74kΩ to VPU = VDD, and CL = 36 pF (Refer to Figure 1-2 and Figure 1-3). Parameters Sym Min Typ Max Units Conditions Fall Time tF —0.7 — µs (Note 1) Propagation Delay (High-to-Low) tPHL —4.0 8.0 µs Propagation Delay (Low-to-High) tPLH —3.0 8.0 µs (Note 1) Propagation Delay Skew tPDS —-1.0 — µs (Notes 1 and 2) Maximum Toggle Frequency fMAX — 225 — kHz VDD = 1.6V fMAX — 165 — kHz VDD = 5.5V Input Noise Voltage EN — 200 — µVP-P 10 Hz to 100 kHz Note 1: tR and tPLH depend on the load (RL and CL); these specifications are valid for the indicated load only. 2: Propagation Delay Skew is defined as: tPDS = tPLH - tPHL. Electrical Specifications: Unless otherwise indicated, VDD = +1.6V to +5.5V, VSS = GND, TA = 25°C, VIN+ = VDD/2, VIN– = VSS, RPU =2.74kΩ to VPU = VDD, and CL = 36 pF (Refer to Figures 1-1 and 1-3). Parameters Sym Min Typ Max Units Conditions CS Low Specifications CS Logic Threshold, Low VIL VSS —0.2VDD V CS Input Current, Low ICSL —5 — pA CS = VSS CS High Specifications CS Logic Threshold, High VIH 0.8VDD —VDD V CS Input Current, High ICSH —1 — pA CS = VDD CS Input High, VDD Current IDD —18 — pA CS = VDD CS Input High, GND Current ISS —-20 — pA CS = VDD Comparator Output Leakage IO(LEAK) —1 — pA VOUT = VSS+10V CS Dynamic Specifications CS Low to Comparator Output Low Turn-on Time tON —2 50 ms CS = 0.2VDD to VOUT = VDD/2, VIN– = VDD CS High to Comparator Output High Z Turn-off Time tOFF —10 — µs CS = 0.8VDD to VOUT = VDD/2, VIN– = VDD CS Hysteresis VCS_HYST —0.6 — V VDD = 5V VIL Hi-Z tON VIH CS tOFF VOUT -20 pA, typ. Hi-Z ISS ICS 1pA, typ. 1pA, typ. -20 pA, typ. -0.6 µA, typ. VOL tPLH VOUT VIN– 100 mV 100 mV tPHL VOL VIN+ = VDD/2 VOH |
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