What is the role of MAX232 in serial communication?
MAX232 IC is widely used for serial communication among Microcontrollers & PC. The main function of this integrated circuit is to change the logic levels of TTL/CMOS to RS232 throughout the serial communication process.
How many pins are MAX232?
16 pins
Max232 has 16 pins. It requires four external capacitors for its proper configuration. Capacitors can range between 8 uf to 10 uf and are of up to 16 volts. Pin names With functions are listed below.
What is MAX232 and RS-232?
RS-232 is a serial communications standard from the Telecommunications Industry Association . MAX232 is an integrated circuit product from Texas Instruments that converts two full-duplex channels of logic-level signals (e.g. to and from a microcontroller) to RS232 communications voltage levels.
What is MAX3232 and MAX232?
MAX232 is powered by 5V voltage, and max3232 is powered by 5V or 3.3V voltage. The power consumption of MAX232 is large, when the supply voltage is 5V, the power consumption is 5mA; while the power consumption of MAX3232 is small, when the supply voltage is 5V or 3.3V, the power consumption is 0.3mA.
What is rs232c?
RS-232C is a long-established standard (“C” is the current version) that describes the physical interface and protocol for relatively low-speed serial data communication between computers and related devices.
What is meant by RS-232?
(Serail port) RS-232 is the name of an interface for the interchange of serial binary data between two devices. Serial means that the data bits are send one by one after the other. RS-232 was commonly used in computers to connect devices like a printer or a telephone modem.
What is MAX3232 IC?
MAX3232 IC is a converter IC, used to convert RD232 to TTL. This IC includes line drivers-2, line receivers-2 & a circuit for dual charge-pump including ESD protection from terminal to terminal with 15 kV.
How many devices can be connected to RS-232?
RS-232 is the simplest of the two interfaces. It is used to connect two devices as illustrated below: That is, the transmitter of Device 1 is connected to the receiver of Device 2 and vice versa.
What is flow control in RS-232?
RTS / CTS Flow Control is another flow control mechanism that is part of the RS232 standard. It makes use of two further pins on the RS232 connector, RTS (Request to Send) and CTS (Clear to Send). These two lines allow the receiver and the transmitter to alert each other to their state.
How many types of TTL are there?
The types of TTL or transistor-transistor logic mainly include Standard TTL, Fast TTL, Schottky TTL, High power TTL, Low power TTL & Advanced Schottky TTL.
What are the characteristics of RS232C?
The characteristics of RS232C are as follows: The timing between data bits are specified whereas the timing between two characters is not fixed. – This standard guarantees 50 ft coverage and 25 signal lines are defined by it. – For each direction only a single wire is defined.
What is difference between RS-232 and RS232C?
Because this adoption date was so long ago, most manufacturers, including National Instruments, have dropped the “C” from the name and simply refer to the protocol as RS-232. In common, modern usage, there is no difference between RS-232 and RS-232C, protocol.
What are RS232 voltage levels?
Valid RS-232 signals are either in the range of +3 V to +15 V or the range −3 V to −15 V with respect to the common ground (Figure 1-1). To be more specific, the driver output is Logic 0 when the voltage is between +5 V and +15 V and is Logic 1 when the voltage is between -5 V to -15 V.
What are the RS-232 voltage levels?
What type of cable is used for RS-232?
9 pin DB9 cable
You will probably recognize the standard 9 pin DB9 cable. Simply put, a RS232 connection transmits signals using a positive voltage for a binary 0 and a negative voltage for a binary 1.