The MAX3460–MAX3464 are high-speed differential bus transceivers for RS-485 and RS-422 communications. They are designed to meet TIA/EIA-422-B, TIA/EIA-485-A, V.11, and X.27 standards. The transceiver complies with the PROFIBUS specification providing +2.1V output level with a 54Ω load, 20Mbps data rate, and output skew less than 2ns. Each part contains one three-state differential line driver and one differential input line receiver. The devices operate from a +5V supply and feature true fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted. This enables all receiver outputs on a terminated bus to output logic highs when all transmitters are disabled. All devices feature a 1/4 standard unit load receiver input impedance that allows 128 transceivers on the bus. Driver and receiver propagation delays are guaranteed under 20ns for multidrop, clock distribution applications. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry. The driver and receiver feature active-high and active-low enables, respectively, that can be connected together externally to serve as a direction control. Applications * High-Speed RS-422 Communications * High-Speed RS-485 Communications * Industrial Control Local Area Networks * Level Translators * PROFIBUS Applications * Recommended for PROFIBUS Applications * Guaranteed 20Mbps Data Rate * 20ns Transmitter and Receiver Propagation Delay * 2ns Transmitter and Receiver Skew * High Differential Driver Output Level (2.1V on 54Ω) * Hot-Swap Versions * 1µA Shutdown Supply Current * Low Supply Current Requirements (2.5mA typ) * Allow Up to 128 Transceivers on the Bus * True Fail-Safe Receiver while Maintaining EIA/TIA-485 Compatibility * Designed for Multipoint Transmissions on Long or Noisy Bus Lines * Full Duplex and Half Duplex Versions Available * Phase Controls to Correct for Twisted-Pair Reversal for 14-Pin Versions * Current-Limiting and Thermal Shutdown for Driver Overload Protection https://elecena.pl/product/22324021/5v-fail-safe-20mbps-profibus-rs-485-rs-422-transceivers 2022-12-27 https://elecena.pl/product/22324021/5v-fail-safe-20mbps-profibus-rs-485-rs-422-transceivers 2025-01-21