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MAX4780ETE Datasheet(PDF) 8 Page - Maxim Integrated Products |
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MAX4780ETE Datasheet(HTML) 8 Page - Maxim Integrated Products |
8 / 11 page Logic Inputs The MAX4780/MAX4784 logic inputs can be driven up to +4.2V regardless of the supply voltage. For example, with a +1.8V supply, A_ and EN may be driven low to GND and high to +4.2V. Driving A_ and EN rail-to-rail minimizes power consumption. Drive EN low to enable the COM_ outputs. When EN is high, the COM_ outputs are high impedance. Analog Signal Levels Analog signals that range over the entire supply voltage (V+ to GND) can be passed with very little change in on- resistance (see the Typical Operating Characteristics). The switches are bidirectional, so the NO_, NC_, and COM_ pins can be used as either inputs or outputs. Layout High-speed switches require proper layout and design procedures for optimum performance. Reduce stray inductance and capacitance by keeping traces short and wide. Ensure that bypass capacitors are as close to the device as possible. Use large ground planes where possible. 0.7 Ω Ω, Low-Voltage, Quad 2:1 Analog Multiplexers 8 _______________________________________________________________________________________ Test Circuits/Timing Diagrams VA0 V+ VOUT GND V+ A0 COM NO VNO_ NC MAX4780/ MAX4784 RL CL* *CL INCLUDES STRAY CAPACITANCE. **MAX4784 ONLY. EN** 50% VIH + 0.5V 0 VOUT GND VA0 90% tOFF tON tR < 5ns tF < 5ns Figure 1. Turn-On and Turn-Off Times 50% VIH + 0.5V 0 VCOM VOUT VA0 0 90% tBBM VA0 V+ VOUT GND V+ A0 NC, NO COM VN_ _ MAX4780/ MAX4784 RL CL* *CL INCLUDES STRAY CAPACITANCE. **MAX4784 ONLY. tR < 5ns tF < 5ns EN** Figure 2. Break-Before-Make Interval |
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