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Product Detailed Parameters
- Description：AC IN-DARLINGTON OUT OPTOCOUPLER
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Number of Channels：-
- Voltage - Isolation：-
- Current Transfer Ratio (Min)：-
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：-
- Input Type：-
- Output Type：-
- Voltage - Output (Max)：-
- Current - Output / Channel：-
- Voltage - Forward (Vf) (Typ)：-
- Current - DC Forward (If) (Max)：-
- Vce Saturation (Max)：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The TIL922 is a quad-channel optocoupler manufactured by Texas Instruments, featuring four independent channels within a single 16-pin package. This component provides electrical isolation between input and output circuits using an internal LED and photodetector configuration. It is designed for applications requiring multiple isolated signal paths in a compact form factor, offering reliable performance for digital signal transmission across isolated domains.
Feature Summary
- Integrates four independent optocoupler channels into a single device
- Provides galvanic isolation between input control signals and output loads
- Utilizes a 16-pin package configuration to support multi-channel designs
Applications
- Multi-channel data acquisition systems requiring signal isolation
- Industrial control panels with multiple isolated I/O lines
- Communication interfaces needing simultaneous isolated signal routing
Procurement Notes
Verify the specific datasheet revision and pinout configuration before integration, as optocoupler characteristics can vary significantly between manufacturers. Ensure that the required isolation voltage ratings meet the safety standards of the target application environment. Confirm compatibility with the driving circuitry current requirements to guarantee proper LED activation and consistent switching performance across all four channels.
Selection Notes
Select this component when design constraints require four isolated channels within a single footprint to reduce board space. Consider the trade-off between channel density and potential thermal accumulation compared to discrete solutions. Evaluate the propagation delay and CTR specifications against the system timing requirements to ensure adequate signal integrity for high-speed digital applications.
Part Context
The TIL922 belongs to a family of single, dual, and quad channel optocouplers from Texas Instruments, which also includes parts like the TIL920 (single channel) and TIL921 (dual channel). This series offers scalable isolation solutions for various packaging needs. The quad-channel variant specifically addresses designs needing multiple isolated paths without increasing component count or PCB area significantly.
Replacement Considerations
Direct substitutes may include other quad-channel optocouplers from different manufacturers, but careful verification of pin compatibility and electrical parameters is essential. Alternative TI parts such as the TIL923 or TIL924 offer similar functionality but may differ in package type or specific electrical ratings.
