SLLSEY7F June 2017 – April 2020
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 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 Power Ratings
- 6.6 Insulation Specifications
- 6.7 Safety-Related Certifications
- 6.8 Safety Limiting Values
- 6.9 Electrical Characteristics—DC Specification
- 6.10 Switching Characteristics—AC Specification
- 6.11 Insulation Characteristics Curves
- 6.12 Typical Characteristics
- 7 Parameter Measurement Information
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
9.2.3 Sourcing and Sinking Inputs (Bidirectional Inputs)
The ISO1212 device can be used to create a bidirectional input module that can sink and source current as shown in Figure 29. In this configuration, channel 1 is active if the COM terminal is connected to ground for sinking inputs, and channel 2 is active if the COM terminal is connected to 24 V for sourcing input. The digital input is considered high if either the OUT1 or OUT2 pin is high.
Figure 29. Application Circuit—ISO1212 With Sourcing and Sinking Inputs A bidirectional input module can also be built with the ISO121x devices using low-cost Schottky diodes as shown in Figure 30.
Figure 30. Bidirectional Implementation With ISO1211 and Bridge Rectifier