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Product Detailed Parameters
- Description：DARLINGTON OUTPUT 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 TIL918B is a dual-channel optocoupler manufactured by Texas Instruments. It integrates two independent channels, each consisting of a gallium-arsenide infrared light-emitting diode coupled to a silicon n-p-n Darlington phototransistor output. The device provides high isolation voltage and is designed for applications requiring reliable signal transmission across isolated circuits.
Feature Summary
- Dual-channel configuration with independent input-output paths
- High isolation voltage capability between input and output sides
- Darlington phototransistor output structure for enhanced current transfer
Applications
- Industrial control systems requiring galvanic isolation
- Signal transmission in noisy electrical environments
- Power supply feedback loops for circuit isolation
Procurement Notes
Verify the specific datasheet revision and ordering information directly from Texas Instruments or authorized distributors. Confirm package type and temperature range requirements match your design specifications before procurement.
Selection Notes
Select this component when dual-channel isolation is required within a single package. Ensure the input forward current and output collector current ratings meet the system's drive and load requirements. Verify isolation voltage ratings against the application's safety standards.
Part Context
The TIL918B belongs to Texas Instruments' family of dual-channel optocouplers. It shares architectural similarities with the TIL917 (single channel) and TIL919 variants, offering a compact solution for multi-channel isolation needs in industrial and commercial electronics.
Replacement Considerations
Check for direct pin-compatible alternatives such as the TIL918A or TIL918C if minor parameter variations are acceptable. Verify functional equivalence with other dual-channel Darlington optocouplers from different manufacturers if supply constraints exist.
