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MAX232N pinout & circuit | pin diagram & capacitors
- Тип: Приемопередатчик
- Протокол: RS232
- Количество водителей/приемников: 2/2
- Упаковка: 16-ДИП (0,300, 7,62 мм)
MAX232N Pinout
The MAX232N is a dual driver/receiver IC designed to convert TTL logic levels to RS-232 signal levels, and vice versa. It is commonly used in serial communication applications where a microcontroller or TTL device needs to communicate with RS-232 devices. The chip features 16 pins, including charge pump capacitor connections, two transmitters (T1, T2), and two receivers (R1, R2), as well as power and ground pins. This pin configuration ensures proper signal translation and reliable communication.
| NAME | NO. | TYPE | DESCRIPTION |
|---|---|---|---|
| C1+ | 1 | — | Positive lead of C1 capacitor |
| VS+ | 2 | О | Positive charge pump output for storage capacitor only |
| C1- | 3 | — | Negative lead of C1 capacitor |
| C2+ | 4 | — | Positive lead of C2 capacitor |
| C2- | 5 | — | Negative lead of C2 capacitor |
| VS- | 6 | О | Negative charge pump output for storage capacitor only |
| T2OUT | 7 | О | RS232 line data output (to remote RS232 system) |
| R2IN | 8 | я | RS232 line data input (from remote RS232 system) |
| R2OUT | 9 | О | Logic data output (to UART) |
| T2IN | 10 | я | Logic data input (from UART) |
| T1IN | 11 | я | Logic data input (from UART) |
| R1IN | 13 | я | RS232 line data input (from remote RS232 system) |
| T1OUT | 14 | О | RS232 line data output (to remote RS232 system) |
| GND | 15 | — | Ground |
| Vcc | 16 | — | Supply Voltage, Connect to external 5V power supply |
Understanding the MAX232N pin configuration is essential for implementing RS-232 level translation in embedded systems. Each pin has a specific role in voltage generation, signal input/output, or power management. When connected correctly, the MAX232N enables seamless data exchange between TTL-level logic and RS-232 compliant devices.
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