What does a MAX232 do?
What does a MAX232 do?
The MAX232 is an integrated circuit by Maxim Integrated Products that converts signals from a TIA-232 (RS-232) serial port to signals suitable for use in TTL-compatible digital logic circuits. The MAX232 is a dual transmitter / dual receiver that typically is used to convert the RX, TX, CTS, RTS signals.
What does MAX232 require?
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 there in IC 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.
How do I know if my MAX232 is working?
Testing steps:
- Ensure the tester is powered off.
- Insert MAX232 chip to the ZIF socket.
- Push SW1 to turn power on.
- Push test button and check the green LED.
- Test the serial data stream with COM port tester. When we press keys (Green), it will echo back to terminal in Yellow.
- Push SW1 to turn power off.
- Take the chip out.
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 is RS232 transceiver?
An RS 232 transceiver is a type of communication device that allows data to be sent and received wirelessly. The term “RS 232” indicates a “recommended standard“ set of rules that are used by all compatible devices.
What is the difference between MAX232 and MAX233?
Mamatha :(May 01, 2019) Clearly mention which device have and which device donot ….Discussion Forum.
| Que. | What is the major difference between a MAX232 and a MAX233 device? |
|---|---|
| b. | one has inbuilt UART other doesn’t have that |
What is meant by RS232?
Most people simply called it a serial connection. At one time, it was the most used form of data transmission. 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.
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.
How is RS-232 voltage measured?
Measure the voltage first between pins 2 and 7, and then between 3 and 7. Be certain in all cases that the black multimeter lead is connected to pin 7, which is signal ground. If the voltage on pin 2 is more negative than -3 V, you are looking at a DTE.
What are rs232 voltage levels?
Is rs422 digital or analog?
RS-422, also known as TIA/EIA-422, is a technical standard originated by the Electronic Industries Alliance that specifies electrical characteristics of a digital signaling circuit.