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isolation
Discrete devices refer to independently packaged, single-function semiconductor or electronic components in electronic circuits, as opposed to integrated circuits (ICs). They typically perform only one basic function (such as switching, amplification, rectification) and achieve complex functions through combinations of external circuits. As the fundamental building blocks of electronic systems, discrete devices are widely used in fields like power management, signal processing, and power conversion. Common examples include diodes, transistors, resistors, capacitors, inductors, etc.
An optocoupler, or optical coupler, is a semiconductor device that transmits electrical signals between isolated circuits using light. It consists of an LED (light-emitting diode) and a photosensitive component (e.g., phototransistor) enclosed in a single package. When an electrical signal triggers the LED to emit light, the photosensitive component detects the light and converts it back into an electrical signal—enabling signal transfer without direct electrical contact. This design blocks voltage spikes, noise, and ground loops, making it ideal for isolating high-voltage circuits from low-voltage systems in power supplies, industrial controls, and medical devices.
An Isolation IC is a specialized semiconductor device that enables safe signal/power transmission between electrically separated circuits while blocking unwanted interference. Using magnetic, capacitive, or optical coupling, it creates an electrical barrier to separate high-voltage/high-noise and low-voltage/sensitive components.
It preserves signal integrity (supporting digital, analog, and power signals) and meets safety standards, with features like high isolation ratings (up to 10kV+) and wide temperature ranges. Widely used in power electronics, industrial automation, and medical devices, it enhances system stability and simplifies design.
| Part No. | Forward/Reverse | Channels | Isolation Rating (Vrms) | Surge Voltage Capability (Vpk) | CMTI (kV/μs) | Max Data Rate (Mbps) | Default Output | Package | |
| Static | Dynamic | ||||||||
| TPT7720 | 2/0 | 2 | 5000 | 10000 | 200 | 150 | 150 | High | WSOP16,WSOP8,SOP8 |
| TPT7720F | 2/0 | 2 | 5000 | 10000 | 200 | 150 | 150 | Low | WSOP16,WSOP8,SOP8 |
| TPT7721 | 2/1 | 2 | 5000 | 10000 | 200 | 150 | 150 | High | WSOP16,WSOP8,SOP8 |
| TPT7721F | 2/1 | 2 | 5000 | 10000 | 200 | 150 | 150 | Low | WSOP16,WSOP8,SOP8 |
| TPT7740 | 4/0 | 4 | 5000 | 10000 | 200 | 150 | 150 | High | WSOP16,SOP16,QSOP16 |
| TPT7740F | 4/0 | 4 | 5000 | 10000 | 200 | 150 | 150 | Low | WSOP16,SOP16,QSOP16 |
| TPT7741 | 4/1 | 4 | 5000 | 10000 | 200 | 150 | 150 | High | WSOP16,SOP16,QSOP16 |
| TPT7741F | 4/1 | 4 | 5000 | 10000 | 200 | 150 | 150 | Low | WSOP16,SOP16,QSOP16 |
| TPT7742 | 4/2 | 4 | 5000 | 10000 | 200 | 150 | 150 | High | WSOP16,SOP16,QSOP16 |
| TPT7742F | 4/2 | 4 | 5000 | 10000 | 200 | 150 | 150 | Low | WSOP16,SOP16,QSOP16 |
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