The 74LVC14A is a low-power hex Schmitt trigger with inverting buffers that can be driven from either 3.3 V or 5 V devices. It is generally used as wave and pulse shapers for high noise environments ...
Sometimes, it is useful to transmit a low-power radio signal to create a beacon, to send a signal carrier to a near receiver, to transmit in QRP or QRPP mode, and so on. The circuit shown here is very ...