HCPL-3700-300E Avago Technologies Integrated Circuit (Other) In Stock
HCPL-3700-300E is a single-channel optocoupler from Avago Technologies with 3750V isolation voltage and CMOS-compatible output. It features surface-mount DIP-8 packaging, 50mA maximum forward current, and RoHS compliance for industrial motor-drive and power-conversion isolation designs.
- Manufacturer
- Avago Technologies
- Package
- Other
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- HCPL-3700-300E Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 3750V isolation voltage for robust galvanic separation in high-voltage power and industrial applications
- CMOS-compatible output interface enables direct connection to 3.3V and 5V digital logic without level shifters
- Surface-mount DIP-8 package with 0.300 inch profile for high-density board assembly
- UL-recognized and RoHS/REACH compliant for global safety certification compliance
Applications
The HCPL-3700-300E is used in industrial motor-drive control circuits, IGBT and MOSFET gate-drive isolation stages, and switched-mode power supply feedback loops where 3750V galvanic isolation is required between control logic and high-voltage power rails. Its CMOS-compatible output simplifies interfacing with modern microcontrollers and DSPs running at 3.3V, eliminating external level-shift components. It is also deployed in programmable logic controllers, medical equipment, and smart-grid inverters that must pass IEC 60747-5-5 or UL recognition requirements.
Specifications
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| YTEOL | 7 |
| Additional Feature | CMOS COMPATIBLE, UL RECOGNIZED |
| Configuration | SINGLE |
| Forward Current-Max | 0.05A |
| Isolation Voltage-Max | 3750V |
| JESD-609 Code | e3 |
| Mounting Feature | SURFACE MOUNT |
| Number of Elements | 1 |
| Number of Functions | 1 |
| On-State Current-Max | 0.03A |
| Optoelectronic Device Type | LOGIC IC OUTPUT OPTOCOUPLER |
| Power Dissipation-Max | 0.21W |
| Response Time-Nom | 0.00004ns |
| Supply Voltage-Min | 2V |
| Supply Voltage-Nom | 18V |
| Surface Mount | YES |
| Terminal Finish | MATTE TIN |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8541.40.80.00 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the 3750V isolation rating of the HCPL-3700-300E protect microcontrollers in motor-drive applications?
The HCPL-3700-300E provides 3750V rms galvanic isolation, which electrically decouples the low-voltage microcontroller domain from the high-voltage motor bus running at 400V to 800V DC in typical 3-phase inverters. During a fault transient or surge event, the isolation barrier absorbs the voltage spike, preventing destructive current from reaching the 3.3V or 5V logic side and meeting IEC 61800-5-1 reinforced insulation requirements.
Why does CMOS-compatible output simplify using the HCPL-3700-300E with modern DSPs and FPGAs?
CMOS-compatible output means the HCPL-3700-300E drives logic-high to within 0.1V of the supply rail and logic-low to within 0.1V of ground, meeting the VOH and VOL thresholds of 3.3V and 5V CMOS inputs directly. No pull-up resistor or level translator is needed between the optocoupler and the DSP or FPGA GPIO, saving board space and reducing propagation delay compared to open-collector output alternatives.
How does the 50mA maximum forward current of the HCPL-3700-300E affect LED drive-resistor selection?
With a maximum forward current (IF) of 50mA and a typical forward voltage (VF) of about 1.2V, the series resistor from a 3.3V drive source is calculated as R = (3.3V - 1.2V) / IF_target. Driving at 10mA gives a 210Ω resistor, ensuring the LED operates well within its 50mA absolute maximum while providing adequate current transfer ratio for reliable switching at the output.
For which safety certifications is the HCPL-3700-300E relevant, and how does that influence procurement for medical designs?
The HCPL-3700-300E is UL recognized and manufactured under an isolation voltage specification of 3750V, which maps to the requirements in UL 508, IEC 60601-1 (medical), and IEC 62368-1 (consumer/IT equipment). Medical instrument designers benefit because procuring a UL-recognized, REACH-compliant optocoupler streamlines the third-party certification audit, reducing the risk of late-stage component requalification that can delay market entry by 3-6 months.
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About Avago Technologies
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