Features

? Exceeds Requirements of EIA-485 Standard

? Data Rate: 20Mbps or 500Kbps

? Up to 256 Nodes on a Bus (1/8 unit load)

? Full Fail-safe Receiver (Open, Short, Terminated)

? Wide Supply Voltage 3V to 5.5V

? 1.65V to Vcc Supply for Digital IOs

? Bus-Pin Protection:

? ±18 kV HBM ESD

? ±15 kV IEC61000-4-2 Contact Discharge

? ±15 kV IEC61000-4-2 Air Discharge

Applications

? Factory Automation

? Field Bus Networks

? Industrial/Process Control Networks

? Communication Infrastructure

Description

The TPT4181 is a 3.0 V to 5.5 V, IEC electrostatic

discharge (ESD) protected RS-485 transceiver, and

the device can support ±15 kV Contact Discharge on

the transceiver bus pins without damage. The

TPT4181 features a VIO logic supply pin allowing a

flexible digital interface capable of operating as low as

1.65 V.

Transmitters in this family deliver exceptional

differential output voltages into the RS-485 required

54Ω load. Receiver (Rx) inputs feature a “Full Fail-Safe”

design, which ensures a logic high Rx output if Rx

inputs are floating, shorted, or on a terminated but

undriven bus. The TPT4181 is available in an

DFN3X3-10L package, and is characterized from –

40°C to 125°C.