All Questions
39
questions
1
vote
0
answers
50
views
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 ...
- 27
0
votes
1
answer
94
views
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 ...
4
votes
2
answers
675
views
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 ...
- 153
3
votes
4
answers
2k
views
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 ...
- 307
-1
votes
1
answer
107
views
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 ....
1
vote
1
answer
405
views
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
1
vote
1
answer
477
views
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 ...
- 111
1
vote
2
answers
863
views
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 ...
- 85
0
votes
1
answer
2k
views
Comparing MAX3232 vs MAX232 for line length
Which parameter in the datasheets of the line drivers MAX3232 and MAX232 can tell about the maximum length of the line for their correct operation if all else is same for the two circuits, that is ...
- 1,479
0
votes
3
answers
2k
views
Transmission from atmega32 to PC using max232 not working
Transmission from atmega32 to PC using max232 not working. When I checked the data from the Tx pin (in the realterm software) of atmega32 it was fine. But there was no output data from max232, when I ...
0
votes
2
answers
707
views
MAX232 vs TRS202EC Line Drivers
I have used MAX232 as UART serial line driver using 5V power supply. Now I have come across TRS202 chip in a circuit. It also run with 5V power supply. Does this chip has some special difference or is ...
- 907
2
votes
1
answer
594
views
RS-232 interface chip problem - why is the voltage level so wrong?
1. What I want to do:
I have a PCB with an AVR microcontroller (ATmega16U4) on it. I want the microcontroller to communicate with my computer through an RS-232 cable.
2. What I did:
I added an ...
- 117
4
votes
2
answers
603
views
Can a MAX232 IC be used for RS-232C standard?
I have a GT01 Panasonic LCD which it's interface is RS-232C.
I have read that the difference between RS-232 and RS-232C is their voltage level which it's ±5 V in RS232C.
Can I use a MAX232 IC to ...
- 75
1
vote
1
answer
600
views
max232 charge pump problem
I have a problem with my MAX232 chip and can't find the solution. The schematic of the chip is in the attachment. The chip is soldered on to a PCB.
I've checked all the connections, the supply ...
-1
votes
1
answer
123
views
Why all the other ultrasonic sensors are getting triggered when only one so actually triggered?
I have an ultrasonic sensor, HC SR04, connected to the atmega 8 controller along with an LED for the indication purpose.
Let me discribe about my project with some anology.
Say I have 20 rooms( ...
