TP8485E中文资料±12K ESD Protection, Full Fail-Safe RS-485 Transceiver数据手册3PEAK规格书

描述 Description

The TP8485E are 3V~5.5V powered transceivers that meet the RS-485 and RS-422 standards for balanced communication. Driver outputs and receiver inputs are protected against ±12kV ESD strikes without latch-up.

Transmitters in this family deliver exceptional differential output voltages (2.5V min/5Vcc), into the RS-485 required 54Ω load, for better noise immunity, or to allow up to eight 120Ω terminations in “star” topologies. These devices have very low bus currents so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 transceivers on the network 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 on a terminated but undriven bus. Rx outputs feature high drive levels - typically 25mA @ VOL = 1V (to ease the design of optocoupled isolated interfaces).

The TP8485E is available in an SOIC-8 and MSOP-8 package, and is characterized from –40°C to 125°C.

特性 Features

• Exceeds Requirements of EIA-485 Standard

• Hot Plug Circuitry-Tx and Rx Outputs Remain Three-State During Power-up/Power-down

• Data Rate: Up to 250 kbps

• Full Fail-safe (Open, Short, Terminated)Receivers

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

• Wide Supply Voltage 3V to 5.5V

• SOIC-8 Package for Backward Compatibility

• Bus-Pin Protection：±12 kV HBM protection

应用 Application

• E-Metering Networks
• Industrial Automation
• HVAC Systems
• Process Control
• DMX512-Networks
• Battery-Powered Applications