Details

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BUY MAX232CSE https://www.utsource.net/itm/p/9836376.html
IC TRANSCEIVER FULL 2/2 16SOIC

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Operating Voltage	VCC		3.0		5.5	V
Supply Current	ICC	VCC = 5V		400		μA
Data Rate				20		kbps
Output High-Level Voltage	VOH	VCC = 5V, IOL=0mA	5.0			V
Output Low-Level Voltage	VOL	VCC = 5V, IOH=0mA			0.4	V
Input Leakage Current	IIH	VIN = VCC	-1		1	μA
Input Capacitance	CIN			7		pF

Instructions for MAX232CSE

1. Power Supply Connection:

   • Connect the VCC pin to a power supply between 3.0V and 5.5V.
   • Connect GND (pin 16) to the ground of your system.

2. Capacitor Connections:

   • Place 0.1μF capacitors between pins 1 and 3, 4 and 5, 6 and 15, and 14 and 16. These are required for internal voltage generation.

3. RS-232 Interface:

   • Connect T1IN (pin 11) and T2IN (pin 13) to TTL/CMOS logic-level outputs.
   • Connect R1OUT (pin 12) and R2OUT (pin 14) to TTL/CMOS logic-level inputs.
   • Connect T1OUT (pin 8) and T2OUT (pin 9) to RS-232 receiver inputs.
   • Connect R1IN (pin 10) and R2IN (pin 7) to RS-232 transmitter outputs.

4. Signal Level Conversion:

   • The MAX232CSE converts TTL/CMOS levels to RS-232 levels on transmit and vice versa on receive.

5. Data Rate Consideration:

   • Ensure that the data rate does not exceed 20 kbps to maintain reliable operation.

6. Placement and Layout:

   • Keep signal traces as short as possible to minimize noise and interference.
   • Place the MAX232CSE close to the RS-232 connector to reduce trace length.

7. Decoupling Capacitors:

   • Use decoupling capacitors near the power supply pins to improve stability and performance.

(For reference only)