ZHCSRQ0F june 2004 – february 2023 SN65HVD485E
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 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: Driver
- 7.6 Electrical Characteristics: Receiver
- 7.7 Power Dissipation Characteristics
- 7.8 Supply Current
- 7.9 Switching Characteristics: Driver
- 7.10 Switching Characteristics: Receiver
- 7.11 Dissipation Ratings
- 7.12 Typical Characteristics
- 8 Detailed Description
- 9 Application and Implementation
- 10Device and Documentation Support
- 11Mechanical, Packaging, and Orderable Information
封裝選項
機械數據 (封裝 | 引腳)
散熱焊盤機械數據 (封裝 | 引腳)
訂購信息
9.2.1.1 Data Rate and Bus Length
There is an inverse relationship between data rate and bus length: the higher the data rate, the shorter the cable length, and conversely the lower the data rate, the longer the cable can 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 9-3 Cable Length vs Data Rate Characteristic