ZHCSCM6G May 2014 – October 2019 SN65HVD70 , SN65HVD71 , SN65HVD73 , SN65HVD74 , SN65HVD76 , SN65HVD77
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 — D Packages
- 7.5 Thermal Information — DGS and DGK Packages
- 7.6 Power Dissipation
- 7.7 Electrical Characteristics
- 7.8 Switching Characteristics — 400 kbps
- 7.9 Switching Characteristics — 20 Mbps
- 7.10 Switching Characteristics — 50 Mbps
- 7.11 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
10.2.1.1 Data Rate and Bus Length
There is an inverse relationship between data rate and cable length, which means the higher the data rate, the short the cable length; and conversely, the lower the data rate, the longer the cable length. 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 ft and longer. Longer distances are possible by allowing for small signal jitter of up to 5 or 10%.
Figure 32. Cable Length vs Data Rate Characteristic