Questions tagged [max232]
Anything related to the MAX232 integrated circuit. The MAX232 IC is used to convert serial communication signals using TTL levels, such as those produced by UARTs ICs, from and to standard RS-232 line signals.
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Is it normal for a MAX232 chip to test positive for continuity between T1OUT and R1IN when powered?
I have noticed, on my MAX232 chip, that when the IC is powered, a continuity test between the T1OUT and R1IN pins tests positive. But not when it is not powered.
Is this normal?
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RS232 isolated communication via MAX3250
I have a two diffrent boards. One of the board is send the SoC and other things to Charger Board. While charging progress starts I want to isolate this to device because battery ground is isolated to ...
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Odd behavior using the MAX3323EEPE to translate RS232 output to TTL logic levels
simulate this circuit – Schematic created using CircuitLab
I am using the MAX3323EEPE Maxim IC in order to attempt to take RS-232 output from a peripheral and shift it down to TTL logic levels ...
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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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MAX232 IC does not convert to and form RS232 levels
I made a simple circuit to read data from RS232 lines and print data on different RS232 lines. This is the IC I am using: MAX3232EIDWG4. The IC fails to convert the CMOS to RS232 level logic.
I am ...
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RS-232 Crossover, and Protection against shorting two TXD lines
I'm in the process of designing a USB to RS-232 converter for communication with some existing boards, and I ran into two problems.
First Question
I need a way to programmatically reverse the TXD and ...
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Configuring SPI circuit design for use in 485 transceiver for long range data transmission (50 meters plus)
So quickly getting out of things I have previously done in trying to send SPI controller signals across long ranges using either 18 AWG cable or based on all the recommendations we have been reading, ...
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Max232 to DB9 connection confusion
The picture shows standard connection between 8051 and DB-9 via MAX232. 14th pin is the translated output of the transmitted data by 8051, so this should be connected to the receiver pin of DB-9, ...
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Doubts about Max232 IC chip
I have a Max 202 Ic and Max 232 Ic
I currently want to make a USB to RS232 Serial Db9 converter
i have the db9 male port, a max 232 and max 202 , usb female port and bunch of other passive components ....
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MAX233 problem with receiving data
I need to make serial connection between regular PCs and a 3.3v TTL device, I using the Maxim 233 which has internal capacitors.
I have the PCs incoming TD connected to R1_IN and RD T1_OUT.
The ground ...
user106458
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Is it possible to use a MAX232 to convert 0 to 5V PWM to 0 to 12V PWM to input to a motor driver requiring 0 to 12V PWM logic?
I'd like to drive a 16kHz PWM signal at 0.5mA into the input of a motor driver expecting logic levels of 0V for LOW and 12V for HIGH, and expecting a PWM signal around this frequency. The PWM signal ...
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3.3V TTL to other formats and impedance matching [closed]
I am trying to convert a 3.3V 50 Ohm Impedance TTL Pulse-per-second into other formats (GPIB, USB, RS-232, etc.). I've found some format adapters/convertors like the MAX232, but I am either ...
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Ultrasonic dual transmitter-receiver circuit
I am building an ultrasonic flow sensor, based on piezoelectric actuators from cheap HR-SR04 modules. I need to measure the speed of sound back and forth. Schematic like this is good to send pulses:
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Interfacing stm32 with MAX232
I am interfacing MAX232 with STM32F030k6. I have very recently found out that Max3232 would be a better choice, because it works with 3,3 volt. But I am eager to know if UART reciever pin of the ...
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Why use 100E resistor in max232 ic in serial pins 13 and 14?
serial pin 13(RxD) use 100E -pin 13 to male connector pin 2(RxD),
serial pin 14(TxD) use 100E -pin 14 to male connector pin 3(TxD)
Why 100E used?
I have attached image and mention clearly for your ...
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