TPT485E中文资料±18K ESD Protection, RS-485 Transceiver数据手册3PEAK规格书

描述 Description

The TPT485E is 4.5V~5.5V powered transceivers that meet the RS-485 and RS-422 standards for balanced communication. Driver outputs and receiver inputs are protected against ±18 kV ESD strikes without latch-up.

Transmitters in this family deliver exceptional differential output voltages as 2.5V (min) in 5Vcc power supplier, into the RS-485 required 54Ω load, for better noise immunity. 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. The TPT485E is available in an SOP8 package, and is characterized from –40°C to 125°C.

特性 Features

• Data Rate: 500 kbps
• Support Failsafe function
• Low Power Consumption: < 1 μA Standby Supply Current
• Large Receiver Hysteresis: 60mV
• Up to 256 Nodes on a Bus (1/8 unit load)
• Wide Supply Voltage 4.5V to 5.5V
• SOP8 Package for Backward Compatibility
• Bus-Pin Protection:

- ±18 kV HBM protection

- ±12 kV IEC61000-4-2 Contact Discharge

应用 Application

• E-Metering Networks
• Video Surveillance Systems
• DMX512-Networks