SLLT226A September 2023 – June 2025 ISOM8110 , ISOM8110-Q1 , ISOM8111 , ISOM8111-Q1 , ISOM8112 , ISOM8112-Q1 , ISOM8113 , ISOM8113-Q1 , ISOM8115 , ISOM8115-Q1 , ISOM8116 , ISOM8116-Q1 , ISOM8117 , ISOM8117-Q1 , ISOM8118 , ISOM8118-Q1 , ISOM8600 , ISOM8610 , ISOM8710 , ISOM8711
Figure 1 Construction of Typical Light-Based Isolated
Optocoupler
Figure 2 Construction of a TI Silicon Dioxide Isolated
Opto-emulator
Light-based
Optocoupler Function is the Same as Using Silicon Dioxide Opto-emulatorDesign Considerations
- TI offers opto-emulators with different output types: High-speed logic output, push-pull or totem-pole, open-collector output, transistor output, and MOSFET or switch output
- Automotive AEC-Q100 optocoupler functionality in more reliable silicon based technology enabling new, lower cost architectures, such as secondary side regulation in DC/DC converters.
- Opto-emulators are pin-to-pin drop-in replacements for logic output and transistor output optocouplers, photoMOS, and low power solid state relays (SSR)
- Opto-emulators have the same functionality of a current driven input and light (LED) based isolation optocoupler but TI's opto-emulators use a more reliable silicon dioxide isolation technology.
- Protects low-voltage system components from high-voltage circuits
- Allows signal transfer between controller devices and peripheral ICs
Additional Resources
- [FAQ] What are the benefits of Opto-emulators vs. Optocouplers?
- [FAQ] Opto-emulators - Top Questions, Answered
- Demystifying Isolation Certification Standards: Optocouplers vs Opto-emulators
- Opto-emulators explained: Why you should upgrade your optocoupler technology
- Opto-emulators | TI.com
Need additional assistance? Ask our engineers a question on the TI E2E™ Isolation Support Forum.
Recommended Parts
Figure 3 PhotoMOS, Photorelay, Solid State Relay (SSR)| Part Number | Output Type | Output Blocking Voltage | Output Current | Isolation rating | Pin-to-Pin photoMOS |
|---|---|---|---|---|---|
| ISOM8610 | MOSFET / switch | 80V | 150mA | VISO = 3750VRMS VIOWM= 500VRMS | CPC1017N VO1400AEF TLP175A AQY221N2VY APY212S TLP3441 ASSR-1218-003E and more |
| ISOM8600 | VIOWM = 500VRMS |
Figure 4 Push/Pull or Totem-Pole
Output
Figure 5 Open-Collector
Output| Part Number | Output Type | VCC | Data Rate | Pin-to-Pin High-Speed Logic output Optocouplers |
|---|---|---|---|---|
| ISOM8710 | Push/Pull Totem-pole | 2.7V to 5.5V | 25Mbps | ACPL-M21L ACPL-M75L TLP2366 LTV-M601 and more |
| ISOM8711 | Open Collector | ACPL-M62L-000E TLP2719 HCPL-M600 and more |
Figure 6 DC Input; Transistor
Output
Figure 7 AC Input; Transistor
Output| Catalog Part Number | Automotive Part Number | Input Type | Output Type | VF (MAX) | CTR | Pin-to-Pin Transistor Output Optocouplers |
|---|---|---|---|---|---|---|
| ISOM8110 | ISOM8110-Q1 | DC Input | Transistor output / Open Collector | 1.4V | 100% to 155% | HCPL-181 ACPL-217 LTV356T LTV357T TLP185 TLP181 PS2701A PS2811-1 EL816 EL3H7 and more |
| ISOM8111 | ISOM8111-Q1 | 1.4V | 150% to 230% | |||
| ISOM8112 | ISOM8112-Q1 | 1.4V | 255% to 380% | |||
| ISOM8113 | ISOM8113-Q1 | 1.4V | 375% to 560% | |||
| ISOM8115 | ISOM8115-Q1 | Bidirectional AC Input | 1.5V | 100% to 155% | ||
| ISOM8116 | ISOM8116-Q1 | 1.5V | 150% to 230% | |||
| ISOM8117 | ISOM8117-Q1 | 1.5V | 255% to 380% | |||
| ISOM8118 | ISOM8118-Q1 | 1.5V | 375% to 560% |
To find a pin-to-pin alternative to the optocouplers in your design, search TI’s cross reference tool.
For more opto-emulators, browse through the online parametric tool.