Max232 Ic. Each receiver converts tia eia 232 f inputs to 5 v ttl cmos levels. Max232 is one of the versatile ic to use in most of the signal voltage level conversion problems.
The max232 device is a dual driver receiver that includes a capacitive voltage generator to supply tia eia 232 f voltage levels from a single 5 v supply. It consist of 3 major blocks it can only be powered by 5 volts to make it power supply compatible with most of the embedded systems. The max232 is a dual transmitter dual receiver that typically is used to convert the rx tx cts rts signals.
This ic is capable of 30v to 30v from rs 232 and shifts the levels down to 0v to 5v ttl cmos acting as an intermediator between devices with level shifting.
Each receiver converts tia eia 232 f inputs to 5 v ttl cmos levels. Max232 introduction max232 was one of its kind which was able to convert the tia eia 32 signals to its voltage and logical levels. Max232 ic can help you to convert two logic level conversion that is you can use two microcontrollers but to get started we will use only one mcu and connect it to a computer the complete circuit is to do the same is shown below. This is where we introduce the max232 ic an industry common ttl cmos to rs 232 level converter ic.
