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What is the major difference between a MAX232 and a MAX233 device?

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in Microcontroller by (14.6k points)
What is the major difference between a MAX232 and a MAX233 device?

(a) one has one serial port other has two

(b) one has inbuilt UART other doesn’t have that

(c) one needs some additional circuitry to operate while the other doesn’t have that

(d) one is used just for transmission while the other is used for both transmission as well as reception

I had been asked this question during an online interview.

I want to ask this question from Serial Port Communication topic in division AVR Microcontroller of Microcontroller

1 Answer

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by (24.2k points)
The correct option is (c) one needs some additional circuitry to operate while the other doesn’t have that

The explanation: MAX232 needs some extra capacitors at pins like 1,2 and 3,4 while on the other hand MAX233 has that inbuilt capacitors built inside it only.

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