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MC74LVXT8051 bảng dữ liệu(PDF) 8 Page - ON Semiconductor |
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MC74LVXT8051 bảng dữ liệu(HTML) 8 Page - ON Semiconductor |
8 / 12 page MC74LVXT8051 http://onsemi.com 8 RL Figure 12. Crosstalk Between Any Two Switches, Test Set−Up Figure 13. Power Dissipation Capacitance, Test Set−Up Figure 14a. Total Harmonic Distortion, Test Set−Up Figure 14b. Plot, Harmonic Distortion 0 -10 -20 -30 -40 -50 - 100 1.0 2.0 3.125 FREQUENCY (kHz) -60 -70 -80 -90 FUNDAMENTAL FREQUENCY DEVICE SOURCE ON 6 8 16 CL* *Includes all probe and jig capacitance OFF RL RL VIS RL CL* VOS fin 0.1 mF ON/OFF 6 8 16 VCC CHANNEL SELECT NC COMMON O/I OFF/ON ANALOG I/O VCC A 11 VCC ON 6 8 16 VCC 0.1 mF CL* fin RL TO DISTORTION METER *Includes all probe and jig capacitance VOS VIS APPLICATIONS INFORMATION The Channel Select and Enable control pins should be at VCC or GND logic levels. VCC being recognized as a logic high and GND being recognized as a logic low. In this example: VCC = +5V = logic high GND = 0V = logic low The maximum analog voltage swing is determined by the supply voltage VCC. The positive peak analog voltage should not exceed VCC. Similarly, the negative peak analog voltage should not go below GND. In this example, the difference between VCC and GND is five volts. Therefore, using the configuration of Figure 15, a maximum analog signal of five volts peak−to−peak can be controlled. Unused analog inputs/outputs may be left floating (i.e., not connected). However, tying unused analog inputs and outputs to VCC or GND through a low value resistor helps minimize crosstalk and feedthrough noise that may be picked up by an unused switch. Although used here, balanced supplies are not a requirement. The only constraints on the power supplies are that: VCC − GND = 2 to 6 volts When voltage transients above VCC and/or below GND are anticipated on the analog channels, external Germanium or Schottky diodes (Dx) are recommended as shown in Figure 16. These diodes should be able to absorb the maximum anticipated current surges during clipping. |
Số phần tương tự - MC74LVXT8051 |
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Mô tả tương tự - MC74LVXT8051 |
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