Details

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BUY MAX485ECSA https://www.utsource.net/itm/p/11657510.html

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VCC	Operating	4.75	5	5.25	V
Supply Current (Receiver)	ICC	No. of Receivers = 1, VCC = 5V	-	300	-	渭A
Supply Current (Transmitter)	ICC	No. of Transmitters = 1, VCC = 5V	-	300	-	渭A
Driver Output High-Level Voltage	VOH	IOL = 250渭A, VCC = 5V	2.4	-	5.0	V
Driver Output Low-Level Voltage	VOL	IOH = -250渭A, VCC = 5V	0.4	-	0.5	V
Receiver Input High-Level Voltage	VIH	-	2.0	-	5.0	V
Receiver Input Low-Level Voltage	VIL	-	0.0	-	0.8	V
Receiver Input Impedance	RIN	-	12	-	-	k惟
Maximum Data Rate	fDATA	-	-	2.5	-	Mbps
Operating Temperature Range	Toperating	-	-40	-	85	掳C
Storage Temperature Range	Tstorage	-	-65	-	150	掳C

Instructions for Using MAX485ECSA:

1. Power Supply:

   • Ensure the supply voltage (VCC) is within the range of 4.75V to 5.25V.
   • Connect the VCC pin to a stable 5V power source and GND to ground.

2. Data Transmission:

   • Connect the data input (DI) and data output (RO) pins to your microcontroller or other communication device.
   • The DE (Driver Enable) and RE (Receiver Enable) pins control the direction of data flow:
     • Set DE high and RE low to enable the transmitter.
     • Set DE low and RE high to enable the receiver.
     • Set both DE and RE low to put the device in a high-impedance state (tristate).

3. Termination:

   • For reliable operation over long distances, use 120惟 termination resistors at both ends of the bus.

4. Signal Levels:

   • Ensure that the signal levels on the bus are within the specified input voltage ranges (VIH and VIL).

5. Temperature Considerations:

   • The device operates reliably within the temperature range of -40掳C to 85掳C.
   • Store the device in an environment with temperatures between -65掳C and 150掳C.

6. Data Rate:

   • The maximum data rate supported by the MAX485ECSA is 2.5 Mbps. Ensure that your communication protocol does not exceed this rate.

7. Electrostatic Discharge (ESD) Protection:

   • Handle the device with care to avoid ESD damage. Use proper grounding and ESD protection equipment when handling the device.

8. Layout Considerations:

   • Place the device close to the communication bus to minimize noise and signal degradation.
   • Use short, well-shielded cables to reduce interference.

By following these instructions, you can ensure optimal performance and reliability of the MAX485ECSA in your application.

(For reference only)