Questions tagged [max3232]
3V to 5.5V multichannel RS-232 line driver/receiver
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max3232 disconnection suddenly - problem
Hi I use a Max3232 chip to connect the RS232 between the microcontroller(STM32F103) and an HMI, the problem is that sometimes this connection will be disconnected and no longer work, this may happen ...
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MAX3232 ESE+ Not Working but ST3232C and MAX3232 Working on same PCB
I have designed a pcb for Rs232 to TTL, UART converter for using ESP32. I will control an LCD with ESP32. Some IC's (MAX3232 ESE+) heating at the first start. and not working just heating and heating. ...
- 1,139
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I need some clarification on the correct use of a MAX3100 SPI UART chip
I have a system where I need to communicate with a TMAG5170 SPI-based hall-effect sensor chip over a distance of roughly 1.5 meters. Originally I planned to use the LTC6820 isolated SPI transceiver, ...
- 475
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2
answers
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MAX3232: change output to be positive only
I have an existing product with a spare RS232 port on the rear panel. This is connected in the standard way to a MAX3232.
I would like to use this to connect to another device that is TTL level, so I ...
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How to convert 0-3.3V DC into -/+10V? I am using a MAX3232
The 3.3V DC is output from a MCU. How I can convert to a +/-10V signal?（0 for -10V, 3.3V for 10V.) If you can, please give me a circuit diagram using the max3232.
I just used Multisim to simulate ...
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How to use MAX3232 RS232 to UART converter with ESP32
I want to use max3232 IC with ESP32 to connect Topway HMI display. I decided to use ESP32's RX2 and TX2 pins to connect max3232. So I've tried to make this circuit (from here) for my PCB. But ...
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MAX3232: Switch between RS-232 and TTL levels
Sorry in advance, electronics noob here!
I need to make a proof of concept to get some data out of third party system which handles both RS232 and TTL levels.
The computer/raspberry/arduino shall - I ...
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MAX3232 overheating and using a lot of current when solar panel not connected
I have a weather station using li-ion batteries and being charged with a solar panel. While adding MAX3232 chip I notice that sometimes the MAX3232 would overheat and use a lot of current. In search ...
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force output on a MAX3232 RS-232 transceiver
I need to probe the output RX (DOUT1/2) nets (connected to one MCU's UART) of a MAX3232 RS232 transceiver, for this I'll use the PCB test points, but I'd also like to "force" logic levels on ...
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Why does the MAX3232 have two inputs and two outputs?
I am trying to make a PCB for TTL to RS232 converter. I am using the MAX3232.
It looks 10-11, 14-7, 13-8 and 12-9 are the same. I see some diagrams where people only use one of them. For example,in ...
- 1,139
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Maxim MAX3232 chip used as an interface with itself?
I am trying to use a MAX3232ECPE chip to communicate between two ESP32 Feather boards, just as practice with RS-232 conversion before I move on to communicating with an actual RS-232 device. (This is ...
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Can I connect two microcontrollers via RS232 separated by a distance of 3.5 inches? Both are on two separate PCBs
This design has two PCBs, each with a microcontroller. One can be said to be main and the other is a possible expansion if the user wishes to use it.
The microcontrollers will communicate via RS232 (...
- 595
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Control power supply to MAX3232 IC using Arduino
Need to control the supply to MAX3232 ( RS232_TO_TTL) IC using Arduino. The 3.3V supply is also tapped from the Arduino board. I have to keep the Vcc supply of MAX3232 around 3V. With the present ...
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Weird output from MAX3232
Hi - I'm getting unexpected output from a MAX3232 board. I'm trying to reimplement a baseball scoreboard controller. The signal I'm trying to recreate is at RS232 levels (-5 to 5V) but uses a ...
- 61
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RS422 and RS485; full-duplex or half-duplex?
I have extensively used RS232 transceivers in many projects and have fairly good understanding of UART communication using RS232 transceivers. MAX232 and MAX3232.
Now I have to build my understanding ...
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