TPT485E数据手册3PEAK中文资料规格书

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

• Exceeds Requirements of EIA-485 Standard\r
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• Data Rate: 500 kbps\r
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• Support Failsafe function\r
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• Low Power Consumption: < 1 μA Standby Supply Current\r
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• Large Receiver Hysteresis: 60mV\r
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• Up to 256 Nodes on a Bus (1/8 unit load)\r
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• Wide Supply Voltage 4.5V to 5.5V\r
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• SOP8 Package for Backward Compatibility\r
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• Bus-Pin Protection:\r
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- ±18 kV HBM protection\r
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- ±12 kV IEC61000-4-2 Contact Discharge

应用 Application

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