TPT485A

±20-kV ESD Protected, 500-Kbps, RS-485 Transceiver

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概述
开发资源
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订购明细

概述

The TPT485A is the enhanced RS485 which exceeds the standard TIA/EIA-485-A. The TPT485A is a single transceiver for balanced communication with a ±15-kV IEC-ESD protection and 4.5-V to 5.5-V power supply. It also features the larger output voltage and higher data rate (up to 500 Kbps) required by high-speed PROFIBUS applications.

Transmitters in this family deliver exceptional differential output voltages into the RS-485 required 54-Ω load. These 500-Kbps 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.

This transceiver requires a 4.5-V to 5.5-V tolerance supply and delivers at least a 2.0-V differential output voltage on the 5-V supply condition. Receiver (Rx) inputs feature a “Full Fail-Safe” design, which ensures a logic-high Rx output if the Rx inputs are floating, shorted, or terminated but undriven. The Rx outputs feature high drive levels (typically > 25 mA @ VOL = 1 V) to ease the design of optically isolated interfaces. The TPT485A is available in the SOP8 package, and is characterized from –40°C to 125°C.

Status

Production
Rating

Industrial
Drivers Per Package

1
Receivers Per Package

1
VCC (Min) (V)

4.5
VCC (Max) (V)

5.5
Data Rate (Max) (kBPS)

500
ICC (Max) (mA)

0.6
ESD HBM (kV)

20
IEC-61000-4-2 Contact (kV)

15
Operating Temperature Range (℃)

-40 to +125
Package

SOP8

开发资源

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- 思瑞浦模拟产品选型册
  
  选型手册
  
  中文
  
  01/19/2024
- Datasheet_TPT485A
  
  数据手册
  
  英文
  
  04/28/2025
  
  ±20-kV ESD Protected, 500-Kbps, RS-485 Transceiver
- Introduction to Latch-up and the Preventive Measures
  
  技术文章
  
  英文
  
  01/19/2024
- Introduction to ESD Performance of a Silicon Chip
  
  技术文章
  
  英文
  
  01/19/2024
- Automatic Correction Scheme of RS-485 Communication Bus Cross-Wire Fault
  
  技术文章
  
  英文
  
  01/19/2024
- Application Tips on ESD-EOS
  
  技术文章
  
  英文
  
  01/19/2024