The MAX3468ESA+T from Maxim Integrated Products is a +5V, fail-safe, profibus RS485/RS422 transceiver in 8 pin NSOIC package. This high speed and half 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. It contains one 3/1 state differential line driver/receiver. It 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
Current limiting and thermal shutdown for driver overload protection
Receiver
driver enable function, low power shutdown mode and hot swap function
High-Speed RS-422 Communications; High-Speed RS-485 Communications; Industrial-Control Local Area Networks; Level Translators; PROFIBUS Applications
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