I recently saw a circuit that implemented a BAV99, which is just two diodes, between +3.3V and GND. How does this work? Based on the spec sheet, the fwd voltage varies based on the current. Am I to interpret it as the first diode connected to ground dictating that the voltage abide by the fwd voltage (that is, pin 3 shows 1V given 50mA), and that the upper diode to +3.3V doesn't come into effect until the pin 3 voltage is at (+3.3V - 1V [upper forward voltage])= +2.3V? But how is +2.3V ever reached if the bottom diode clamps it to its own forward voltage?
Any help is greatly appreciated - thanks!