Inhibit gate for e.g. mobile telephone field, has logic inverter between ground and supply voltage source, receiving fixed reference voltage at its input, and adapted for switching its state when supply voltage passes below/above threshold

摘要

The gate has a comparator which is a logic inverter (I1) mounted between the ground and a voltage source producing a supply voltage (VDD). The inverter receives a fixed reference voltage at its input and is adapted for switching over its state when the supply voltage passes below or above a determined threshold. The inverter has two transistors (T1, T2) connected in series between an output of the voltage source and the ground.