The MAX487ESA is a low-power transceiver for RS-485 and RS-422 communication. The MAX487ESA features a slew-rate limiting driver that reduces EMI and reduces reflections caused by inappropriate termination-matched cables. Error-free data transmission up to 250kbps is realized.
The MAX487ESA transceiver draws between 120 A and 500 UA of supply current when the driver is disabled at no load or full load. In addition, the MAX481
The MAX487ESA has a low-current shutdown mode that consumes only 01 A current. All devices operate from a single 5V supply. The driver has a short-circuit current limit and can be thermally shut down to set the driver output to a high-impedance state to prevent excessive power loss. The receiver input is fail-safe and ensures a logic-high output when the input is open.
The MAX487ESA has a quarter-load receiver input impedance, allowing up to 128 MAX487 transceivers to be on the bus. The MAX487ESA is designed for half-duplex applications.
parameters
Category: RS-485 RS-422 chip.
Type: Transceiver.
Power supply voltage: 475v~5.25v
Data rate: 250kbps
Drive Receiver: 1 1
Operating temperature: -40 +85
Duplex: Half. Protocol "rs422, rs485
*Commercial device package: 8-SOIC
Receiver hysteresis: 70mV
Applications
Industrial control LAN.
Level shifter.
Low-power RS-485 transceiver.
Transceivers for EMI-sensitive applications.
Low-power RS-422 transceiver.
pins
Typical operating circuit
Driver Receiver timing test circuit