RS232 transceiver circuit collection


2 transistor
The circit below use 2 transistor and some components to provide RS232 transceiver.It usefull for cheap application that dose not long lenght.
RS232 transceiver circuit collection

Fig 1. Transceiver with 2 transistor

MAX232(Full duplex)
The circuit below
use MAX232 which is the MAXIM’s devices.This circuit is very stable and use for professional design. This device is inexpensive and it can provides 2 channel for RS232 .
The MAX232 line
drivers/receivers are designed for RS-232 and V.28
communications in harsh environments. Each
transmitter output and receiver input is protected
against ?15kV electrostatic discharge (ESD) shocks,
without latchup.It can operate from a Single +5V Power Supply.
RS232 transceiver circuit collection #2

Fig 2. Use MAX232 for RS232 transceiver

DS275(Half Duplex)
This RS232 transceiver circuit use DS275 which is a small half duplex transceiver chip.I Compatible with RS–232–E signals and suitible for Low–power serial transmitter/receiver for battery-
backed application.Requies no external devices.

RS232 transceiver circuit collection #3

Fig 3. Circuit to use DS257

RS232 transceiver circuit collection #4


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