3V to 5.5V multichannel RS-232 line driver/receiver

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How to Connect Raspberry Pi with GSM sim900a mini rs232 [migrated]

I have connected Raspberry Pi to GSM sim900a mini with the following details: convertor max3232 used DB9-2 sim900a connected to DB9-3 max3232 DB9-3 sim900a connected to DB9-2 max3232 tx (raspberry) ...
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2answers
316 views

MAX3232 overheating/burnt after connecting to PC

I've got a MAX3232 Serial-to-TTL RS232 board which I am currently using in factory assembly lines. I don't have its picture, but here's a similar product: This is the circuit I've managed to figure ...
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357 views

Connect Arduino to RS232

I have a device that is powered by the Arduino (+5V). The device (a VC0706 Powered camera), incomporates a MAX3232 to convert to RS-232. Unfortunatly, I don't have the tools or dexterity to remove ...
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1answer
822 views

UART is garbled when running at more than 9600 bps

I'm connecting 2 MSP430F5529-based boards (running at 1 MHz) using UART and MAX3232 (MSP430F5529 -> MAX3232 -> cable, a few cm long - will be longer in our final application -> MAX3232 -> ...
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2answers
5k views

atmega 328 serial communication

I'm trying to get the atmega328 to communicate over serial port with my pc. I'm using hyperterminal to echo back the keyboard character entries. I'm using the max3232 chip to do the communicated with ...
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1answer
796 views

Crosstalk from RX to TX line on the RS-232 side of MAX3232C

We have a product which is using a MAX3232C for interfacing to a PC. Its RS-232 RX line is tied to the MAX3232's R1IN pin and its TX line to T1OUT: The problem we are having appears to be some kind ...
3
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1answer
227 views

RS-232 Zero (-7V) drops when I connect db9 connectors

I'm interfacing with a system using RS-232. To communicate, I use MAX2322 for TTL <-> RS-232 to interface with PIC microcontroller and PL2303 for USB <-> RS-232 to interface with PC. All of the ...
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1answer
276 views

Generating dual rail power from a MAX3232?

I've seen several electronics devices using MAX3232 or similar devices to generate dual rail power supplies. In my instance, I have 3.3V going in and need regulated ±5V outputs. I have three four ...