ISL43485IBZ-T

ISL43485IBZ-T is a high speed BiCMOS 3.3V powered, single transceiver that meets both the RS-485 and RS-422 standards for balanced communication. Unlike some competitive devices, this transceiver is specified for 10% tolerance supplies ((3V to 3.6V). Logic inputs (for example, DI and DE) accept signals in excess of 5.5V, making them compatible with 5V logic families. The receiver (Rx) inputs feature a “fail-safe if open” design, which ensures a logic high output if Rx inputs are floating. The ISL43485 presents a “single unit load” to the RS-485 bus, which allows up to 32 transceivers on the network. The driver (Tx) outputs are short-circuit protected, even for voltages exceeding the power supply voltage. Application includes SCSI “Fast 20” drivers and receivers, factory automation, data loggers, security networks, building environmental control systems, industrial/process control networks, level translators.

• 50Mbps maximum data rate (typ, VCC = 3V to 3.6V, TA = +25°C)
• Operates from a single +3.3V supply (10% tolerance)
• Interoperable with 5V logic, single unit load allows up to 32 devices on the bus
• 15nA low current shutdown mode
• 10ns propagation delay, 1ns skew
• Three state Rx and Tx outputs, half duplex pinout
• Current limiting and thermal shutdown for driver overload protection
• 2.7V typical driver differential VOUT (with load, RL = 100 ohm)
• 8 lead SOIC package, operating temperature range from -40 to +85°C