ZHCS823H March 2012 – March 2019 SN65HVD72 , SN65HVD75 , SN65HVD78
UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.
- 1 特性
- 2 應用
- 3 說明
- 4 修訂歷史記錄
- 5 Device Comparison Table
- 6 Pin Configuration and Functions
-
7 Specifications
- 7.1 Absolute Maximum Ratings
- 7.2 ESD Ratings
- 7.3 Recommended Operating Conditions
- 7.4 Thermal Information
- 7.5 Electrical Characteristics
- 7.6 Power Dissipation
- 7.7 Switching Characteristics: 250 kbps Device (SN65HVD72) Bit Time ≥ 4 µs
- 7.8 Switching Characteristics: 20 Mbps Device (SN65HVD75) Bit Time ≥50 ns
- 7.9 Switching Characteristics: 50 Mbps Device (SN65HVD78) Bit Time ≥20 ns
- 7.10 Typical Characteristics
- 8 Parameter Measurement Information
- 9 Detailed Description
- 10Application and Implementation
- 11Power Supply Recommendations
- 12Layout
- 13器件和文檔支持
- 14機械、封裝和可訂購信息
封裝選項
機械數據 (封裝 | 引腳)
散熱焊盤機械數據 (封裝 | 引腳)
- DRB|8
訂購信息
10.2.1.1 Data Rate and Bus Length
There is an inverse relationship between data rate and bus length, meaning the higher the data rate, the shorter the cable length; and conversely, the lower the data rate, the longer the cable may be without introducing data errors. While most RS-485 systems use data rates between 10 kbps and 100 kbps, some applications require data rates up to 250 kbps at distances of 4000 feet and longer. Longer distances are possible by allowing for small signal jitter of up to 5 or 10%.
Figure 21. Cable Length vs Data Rate Characteristic