ZHCSDL3O MARCH 2001 – April 2018 SN65HVD230 , SN65HVD231 , SN65HVD232
PRODUCTION DATA.
- 1 特性
- 2 應用
- 3 說明
- 4 修訂歷史記錄
- 5 說明 （續(xù)）
- 6 Device Comparison Table
- 7 Pin Configuration and Functions
-
8 Specifications
- 8.1 Absolute Maximum Ratings
- 8.2 ESD Ratings
- 8.3 Recommended Operating Conditions
- 8.4 Thermal Information
- 8.5 Electrical Characteristics: Driver
- 8.6 Electrical Characteristics: Receiver
- 8.7 Switching Characteristics: Driver
- 8.8 Switching Characteristics: Receiver
- 8.9 Switching Characteristics: Device
- 8.10 Device Control-Pin Characteristics
- 8.11 Typical Characteristics
- 9 Parameter Measurement Information
- 10Detailed Description
- 11Application and Implementation
- 12Power Supply Recommendations
- 13Layout
- 14器件和文檔支持
- 15機械、封裝和可訂購信息
10.4.2 Slope Control Mode
Electromagnetic compatibility is essential in many applications while still making use of unshielded twisted pair bus cable to reduce system cost. Slope control mode was added to the SN65HVD230 and SN65HVD231 devices to reduce the electromagnetic interference produced by the rise and fall times of the driver and resulting harmonics. These rise and fall slopes of the driver outputs can be adjusted by connecting a resistor from RS (pin 8) to ground or to a logic low voltage, as shown in Figure 32. The slope of the driver output signal is proportional to the pin's output current. This slope control is implemented with an external resistor value of 10 kΩ to achieve a ~15 V/μs slew rate, and up to 100 kΩ to achieve a ~2.0 V/μs slew rate as displayed in Figure 33.
Figure 32. Slope Control/Standby Connection to a DSP
