MAX485EEPA+

Series:	--
Packaging:	Tube
Part Status:	Active
Type:	Transceiver
Protocol:	RS422, RS485
Number of Drivers/Receivers:	1/1
Duplex:	Half
Receiver Hysteresis:	70mV
Data Rate:	2.5Mbps
Voltage - Supply:	4.75 V ~ 5.25 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Through Hole
Package / Case:	8-DIP (0.300", 7.62mm)
Supplier Device Package:	8-PDIP
Base Part Number:	MAX485

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MAX485EEPA+ Application Field and Working Principle

MAX485EEPA+ is a low-power transceiver for half-duplex asynchronous serial communication applications. This device is designed for RS-485 or similar networks. It dissipates significantly less power than conventional logic-based solutions, making it ideal for applications where power consumption is a critical factor. The MAX485EEPA+ offers a true differential balanced output and an integrated ESD protection. It also includes a low-power shutdown mode, bus-pin slew-rate control, and slew-rate limited drivers.

Application Field

The MAX485EEPA+ is suitable for a wide variety of applications that require reliable asynchronous serial data transfer over cable, twisted-pair, or fiber-optic communication networks. This device is a popular choice for wiring automation systems, programmable logic controllers, sensors, SCADA systems, industrial automation, building automation, LED displays, raster scanning systems, and other short-distance communication networks. The MAX485EEPA+ transceiver provides reliable data transmission at data rates up to 12 Mbps.

Working Principle

The MAX485EEPA+ is a differential line driver and receiver that is designed specifically for balanced data transmission in half-duplex communication networks. It has an onboard ESD protection circuit to guard against voltage transients. The device transmits and receives data in a differential mode, with one side of the data line driven by the driver circuit and the other side driven by the receiver.The driver circuit is capable of driving up to 40 feet of total bus length and is adjustable to match the cable used. The receiver input is also adjustable to optimise the receive margins in each application. The slew-rate-limited drivers also help to reduce EMI radiation.The device is capable of driving up to 24mA of current into the bus, which is adequate for most applications. Furthermore, the device features a shutdown mode, which can reduce the power consumption of the circuit when not in use.

Conclusion

The MAX485EEPA+ transceiver is an efficient and reliable choice for serial data communications up to 12 Mbps in industrial applications, building automation systems, and other short-distance networks. It also offers superior noise immunity, ESD protection, and low-power shutdown mode.

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