The MAX14781EESA+ is a half-duplex RS485 transceiver with polarity correction in 8 pin NSOIC package. This half-duplex ±25KV ESD-protected RS485 transceiver features integrated automatic polarity correction to ensure that miswired lines are autonomously corrected, simplifying equipment and network installation. It includes slew-rate limited drivers that minimize EMI, allows error-free data transmission up to 370Kbps. This device includes fail-safe circuitry, a logic-high receiver output when the receiver inputs are shorted or open. Hot-swap functionality on the receiver and driver enable inputs also eliminates false transitions on the bus during power-up or live insertion. It has 1/8-unit load receiver input impedance allowing up to 256 transceivers on the bus. It is used in power meter networks, HVAC networks and control systems.
- Supply voltage range is 4.5V to 5.5V
- Operating temperature range from -40°C to 85°C
- ±15KV IEC 61000-4-2 air gap discharge ESD & ±9KV IEC 61000-4-2 contact discharge ESD
- True fail-safe receiver
- Low 10μA (max) shutdown current
- Maximum data rate of 370Kbps at driver
- Maximum data rate of 500Kbps at receiver
- Differential driver output skew is 140ns at RL = 54R, CL = 50pF
- Receiver output skew is 30ns at CL = 15pF
通信与网络
(EN)
