Precision, CMOS Analog SwitchesMAX317/MAX318/MAX319_____________________________________________________Test Circuits/Timing Diagrams +5V +15V MAX317 tR < 20ns MAX318 +3V t LOGIC F < 20ns SWITCH 50% VL V+ INPUT OUTPUT 0V SWITCH COM NC INPUT V OR NO O RL C t L OFF 300Ω SWITCH 35pF VCOM IN INPUT VO 0.9V0 0.9V0 GND V- SWITCH LOGIC 0V OUTPUT INPUT tON -15V LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES CL INCLUDES FIXTURE AND STRAY CAPACITANCE. THAT HAVE THE OPPOSITE LOGIC SENSE. VO = VCOM ( RL ) RL + RON Figure 2. MAX317/MAX318 Switching-Time Test Circuit MAX319 +15V +5V tR < 20ns +3V LOGIC tF < 20ns V+ 50% NC VL INPUT 0V COM VO NO RL CL tTRANS 1000Ω t 35pF TRANS IN VCOM V SWITCH 01 0.8V LOGIC 01 GND V- 0.8V OUTPUT 02 INPUT V02 -15V VCOM CL INCLUDES FIXTURE AND STRAY CAPACITANCE. Figure 3. MAX319 Transition Time _______________________________________________________________________________________7