The MAX3465ESD+ is a +5V, fail-safe, profibus RS485/RS422 transceiver in 14 pin NSOIC package. This high speed and full duplex differential bus transceiver is designed to meet TIA/EIA-422-B, TIA/EIA-485-A, V.11 and X.27 standards. It complies with profibus specification providing +2.1V minimum output level with 54ohm load and 40Mbps data rate. The MAX3465 contains one three state differential line driver and one differential input line receiver. The device operates from +5V supply and feature true fail-safe circuitry which provides logic high receiver output when receiver inputs are open or shorted. This enables all receiver outputs on a terminated bus to output logic highs when all transmitters are disabled. It has 1/4 standard unit load receiver input impedance that allows 128 transceivers on the bus. The driver and receiver has active-high and active-low enables respectively and can be connected together externally to serve as a direction control. It is used in level translators.
Supply voltage range from 4.75V to 5.25V
Operating temperature range from -40°C to 85°C
15ns transmitter propagation delay and 20ns receiver propagation delay
2ns transmitter and receiver skew
Designed for multipoint transmissions on long or noisy bus lines
High differential driver output level (2.1V on 54ohm)
1µA shutdown supply current and low supply current of 2.5mA
Phase controls to correct for twisted pair reversal
Current limiting and thermal shutdown for driver overload protection
Receiver/driver enable, low power shutdown mode, hot swap function and independent shutdown pin
