Microprocessor interface voltage threshold detection device Broadcom HCPL-0370-500E with hysteresis and diode bridge
Product Overview
The HCPL-0370/3700 and HCPL-3760 are voltage/current threshold detection optocouplers designed for industrial control and microprocessor interfacing. The HCPL-3760 offers a low-current version utilizing a high-efficiency AlGaAs LED. These devices feature threshold sensing input buffer ICs that allow for programmable threshold levels with a single external resistor. Key integrated features include hysteresis for enhanced noise immunity, a diode bridge for AC input signal compatibility, and internal clamping diodes for transient protection. The threshold sensing occurs before LED drive, ensuring threshold levels are independent of optical coupling variations. Applications include limit switch sensing, low voltage detection, AC mains and DC link voltage detection, relay contact and coil monitoring, current sensing, and microprocessor interfacing.
Product Attributes
- Brand: Avago Technologies
- Compliance: RoHS 6 fully compliant options available
- Certifications: UL Recognized under UL 1577, CSA approved
Technical Specifications
| Model | Description | Input Threshold Current (typ.) | Input Threshold Voltage (typ.) | Input Current (typ.) | Logic Low Output Voltage (max.) | Logic High Supply Current (typ.) | Supply Voltage (VCC) | Operating Temperature | Package Type |
|---|---|---|---|---|---|---|---|---|---|
| HCPL-0370/3700 | Standard Voltage/Current Threshold Detection Optocoupler | 2.5 mA (ITH+) | 3.7 V (VTH+) | 3.7 mA | 0.4 V | 0.002 A | 2 - 18 V | 0C to 70C | 300 mil DIP-8, SO-8 |
| HCPL-3760 | Low-Current Voltage/Current Threshold Detection Optocoupler | 1.2 mA (ITH+) | 3.7 V (VTH+) | 1.8 mA | 0.4 V | 0.002 A | 2 - 18 V | 0C to 70C | 300 mil DIP-8, SO-8 |
| Agency Approvals & Safety Related Specifications | |||||||||
| All Models | Dielectric Withstand Proof Test Voltage | 3750 Vac, 1 minute (UL 1577 & CSA) | |||||||
| All Models | Maximum Working Insulation Voltage (VIORM) | 567 Vpeak (HCPL-0370), 630 Vpeak (HCPL-3700/3760) (with option 060) | |||||||
| All Models | Highest Allowable Overvoltage (VIOTM) | 6000 Vpeak | |||||||
| All Models | Input-Output Resistance (RI-O) | 1012 | |||||||
| All Models | Input-Output Capacitance (CI-O) | 0.6 pF | |||||||
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