ZHCS349G September 2011 – January 2015 ISO7640FM , ISO7641FM
UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
-
6 Specifications
- 6.1 Absolute Maximum Ratings
- 6.2 ESD Ratings
- 6.3 Recommended Operating Conditions
- 6.4 Thermal Information
- 6.5 Electrical Characteristics: VCC1 and VCC2 at 5 V ±10%
- 6.6 Electrical Characteristics: VCC1 at 5 V ±10% and VCC2 at 3.3 V ±10%
- 6.7 Electrical Characteristics: VCC1 at 3.3 V ±10% and VCC2 at 5 V ±10%
- 6.8 Electrical Characteristics: VCC1 and VCC2 at 3.3 V ±10%
- 6.9 Electrical Characteristics: VCC1 and VCC2 at 2.7 V
- 6.10 Supply Current: VCC1 and VCC2 at 5 V ±10%
- 6.11 Supply Current: VCC1 at 5 V ±10% and VCC2 at 3.3 V ±10%
- 6.12 Supply Current: VCC1 at 3.3 V ±10% and VCC2 at 5 V ±10%
- 6.13 Supply Current: VCC1 and VCC2 at 3.3 V ±10%
- 6.14 Supply Current: VCC1 and VCC2 at 2.7 V
- 6.15 Switching Characteristics: VCC1 and VCC2 at 5 V ±10%
- 6.16 Switching Characteristics: VCC1 at 5 V ±10% and VCC2 at 3.3 V ±10%
- 6.17 Switching Characteristics: VCC1 at 3.3 V ±10% and VCC2 at 5 V ±10%
- 6.18 Switching Characteristics: VCC1 and VCC2 at 3.3 V ±10%
- 6.19 Switching Characteristics: VCC1 and VCC2 at 2.7 V
- 6.20 Typical Characteristics
- 7 Parameter Measurement Information
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12器件和文檔支持
- 13機械封裝和可訂購信息
封裝選項
機械數(shù)據(jù) (封裝 | 引腳)
- DW|16
散熱焊盤機械數(shù)據(jù) (封裝 | 引腳)
- DW|16
訂購信息
9 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.
9.1 Application Information
ISO764x use single-ended TTL-logic switching technology. Its supply voltage range is from 3 V to 5.5 V for both supplies, VCC1 and VCC2. When designing with digital isolators, it is important to note that due to the single-ended design structure, digital isolators do not conform to any specific interface standard and are only intended for isolating single-ended CMOS or TTL digital signal lines. The isolator is typically placed between the data controller (that is, μC or UART), and a data converter or a line transceiver, regardless of the interface type or standard.
9.2 Typical Application
Figure 16. Isolated Data Acquisition System for Process Control
9.2.1 Design Requirements
Unlike optocouplers, which require external components to improve performance, provide bias, or limit current, the ISO764x device only requires two external bypass capacitors to operate.
9.2.2 Detailed Design Procedure
Figure 17. Typical ISO7640FM Circuit Hookup
Figure 18. Typical ISO7641FM Circuit Hookup
9.2.2.1 Typical Supply Current Equations
(Calculated based on room temperature and typical Silicon process)
ISO7640FM:
At VCC1 = VCC2 = 3.3 V
At VCC1 = VCC2 = 5 V
ISO7641FM:
At VCC1 = VCC2 = 3.3 V
At VCC1 = VCC2 = 5 V
ICC1 and ICC2 are typical supply currents measured in mA; f is data rate measured in Mbps; CL is the capacitive load on each channel measured in pF.
9.2.3 Application Curves
Figure 19. Typical Eye Diagram at 150 Mbps, 5-V Operation
Figure 20. Typical Eye Diagram at 150 Mbps, 3.3-V Operation