Details

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BUY MAX232N https://www.utsource.net/itm/p/11657461.html

Parameter	Symbol	Conditions	Min	Typical	Max	Unit
Operating Voltage	VCC	-	4.75	5.0	5.25	V
Supply Current (No Load)	ICC	VCC = 5V	-	1.0	-	mA
Data Rate	fDATA	-	-	20	-	kbps
Input Voltage (High Level)	VIH	-	2.0	-	5.25	V
Input Voltage (Low Level)	VIL	-	0.0	-	0.8	V
Output Voltage (High Level)	VOH	IOL = 5mA	2.4	-	5.0	V
Output Voltage (Low Level)	VOL	IOH = -5mA	0.0	-	0.5	V
Driver Output Voltage (RS-232)	VOD	-	卤5	卤6	卤15	V
Receiver Input Voltage (RS-232)	VIN	-	-25	0	+25	V
Operating Temperature Range	TOPR	-	-40	-	+85	掳C
Storage Temperature Range	TSTG	-	-65	-	+150	掳C

Instructions for Using MAX232N:

1. Power Supply:

   • Connect the VCC pin to a 5V power supply.
   • Connect the GND pin to the ground.

2. Capacitors:

   • Use four 1渭F capacitors (C1, C2, C3, C4) for the charge pump circuit.
   • Connect C1 between pins 1 and 3.
   • Connect C2 between pins 2 and 4.
   • Connect C3 between pins 5 and 6.
   • Connect C4 between pins 4 and 6.

3. Driver Outputs:

   • Connect the RS-232 driver outputs (T1OUT, T2OUT) to the RS-232 port.
   • T1OUT is connected to the TXD pin of the RS-232 port.
   • T2OUT is connected to the RTS or DTR pin of the RS-232 port.

4. Driver Inputs:

   • Connect the RS-232 driver inputs (T1IN, T2IN) to the TTL/CMOS logic levels.
   • T1IN is connected to the TXD pin of the microcontroller or UART.
   • T2IN is connected to the RTS or DTR pin of the microcontroller or UART.

5. Receiver Outputs:

   • Connect the RS-232 receiver outputs (R1OUT, R2OUT) to the TTL/CMOS logic levels.
   • R1OUT is connected to the RXD pin of the microcontroller or UART.
   • R2OUT is connected to the CTS or DSR pin of the microcontroller or UART.

6. Receiver Inputs:

   • Connect the RS-232 receiver inputs (R1IN, R2IN) to the RS-232 port.
   • R1IN is connected to the RXD pin of the RS-232 port.
   • R2IN is connected to the CTS or DSR pin of the RS-232 port.

7. Grounding:

   • Ensure that the ground (GND) of the RS-232 port is connected to the ground of the microcontroller or UART.

8. Data Rate:

   • The MAX232N supports data rates up to 20 kbps. Ensure that the baud rate settings on both the microcontroller and the RS-232 device are compatible.

9. Temperature Considerations:

   • The operating temperature range is from -40掳C to +85掳C. Ensure that the device is used within this range to avoid damage.

10. Storage:

    • Store the device in a temperature range from -65掳C to +150掳C when not in use.

By following these instructions, you can effectively integrate the MAX232N into your RS-232 communication interface.

(For reference only)