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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 TIL922B is a dual-channel optocoupler manufactured by Texas Instruments. It integrates two gallium-arsenide infrared light-emitting diodes connected in reverse-parallel on the input side, coupled to silicon N-P-N phototransistors on the output side. This configuration enables AC signal transmission without external biasing. The device provides electrical isolation between circuits while transmitting data or control signals.
Feature Summary
- Dual-channel design with integrated reverse-parallel LED inputs for AC compatibility
- Optical coupling via gallium-arsenide infrared emitters and silicon phototransistors
- Provides galvanic isolation between input and output circuits
Applications
- AC signal switching applications
- Digital isolation interfaces
- Control circuit isolation
Procurement Notes
Verify the specific suffix 'B' against the official Texas Instruments datasheet to confirm pinout and package variations. Ensure the component matches the required isolation voltage ratings for your specific application environment. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and current production status.
Selection Notes
Select this component when bidirectional AC input is required from a single optocoupler channel. The reverse-parallel LED structure eliminates the need for external diodes in AC driving scenarios. Consider the CTR (Current Transfer Ratio) specifications if precise signal thresholding is necessary for the downstream logic level.
Part Context
The TIL922B belongs to the TIL92x series of dual-channel optocouplers from Texas Instruments. This family includes variants like TIL920, TIL921, and their A/B suffixes, which typically differ in packaging or specific electrical characteristics. These devices are designed for general-purpose digital isolation tasks requiring compact dual-channel solutions.
Replacement Considerations
Check for direct equivalents such as the TIL922A or other dual-channel optocouplers with similar reverse-parallel LED configurations. Verify that any substitute maintains the same pinout compatibility and isolation voltage ratings to ensure seamless integration without PCB redesign.
