ISL8485ECBZ

ISL8485ECBZ is a ESD protected, BiCMOS 5V powered, single transceiver that meet both the RS-485 and RS-422 standards for balanced communication. Each driver output/receiver input is protected against ±15KV ESD strikes without latch-up. It presents a “single unit load” to the RS-485 bus, which allows up to 32 transceivers on the network. Receiver (Rx) inputs feature a “fail-safe if open” design, which ensures a logic high Rx output if Rx inputs are floating. Driver (Tx) outputs are short-circuit protected even for voltages exceeding the power supply voltage. Additionally, on-chip thermal shutdown circuitry disables the Tx outputs to prevent damage if power dissipation becomes excessive. Typical applications are factory automation, security networks, building environmental control systems, industrial/process control networks, level translators (such as RS-232 to RS-422, RS-232 “extension cords”.

• RS-485 I/O pin ESD protection is ±15KV HBM
• Class 3 ESD level on all other pins is >7KV HBM
• Specified for 10% tolerance supplies
• Single unit load allows up to 32 devices on the bus
• Low quiescent current is 500µA
• Common-mode input voltage range from -7V to +12V
• Three-state Rx and Tx outputs, 30ns propagation delays, 5ns skew
• Operate from a single +5V supply (10% tolerance)
• Current limiting and thermal shutdown for driver overload protection
• 8 Ld SOIC package, 0 to +70°C temperature range