ISL3175EIBZ-T

ISL3175EIBZ-T is a ±15kV ESD protected, 3.3V, full fail-safe, low power, RS-485/RS-422 transceiver. This device has very low bus currents, so this present a true “1/8 unit load” to the RS-485 bus. This allows upto 256 transceivers on the network without violating the RS-485 specification’s 32 unit load maximum, and without using repeaters. Receiver (Rx) inputs feature a “Full Fail-Safe” design, which ensures a logic high Rx output if Rx inputs are floating, shorted, or terminated but undriven. Hot plug circuitry ensures that the Tx and Rx outputs remain in a high impedance state while the power supply stabilizes. Application includes automated utility meter reading systems, high node count systems, field bus networks, security camera networks, building environmental control/lighting systems, industrial/process control networks.

• Half duplex, 0.5Mbps data rate, slew rate limited
• Hot plug, 256 number device on bus, RX/TX enable
• 510µA quiescent ICC, low power shutdown
• IEC61000-4-2 ESD protection on RS-485 I/O pins is ±15kV
• HBM Class 3 ESD level on all other pins is 7kV
• Full fail-safe (open, short, terminated/floating) receivers
• Hot plug - Tx and Rx outputs remain three-state during power-up
• True 1/8 unit load allows upto 256 devices on the bus, single 3.3V supply
• Current limiting and thermal shutdown for driver overload protection
• 8 lead SOIC package, operating temperature range from -40°C to +85°C