HCPL-7721-000E

The HCPL-7721-000E is an optocoupler manufactured by Broadcom Inc., designed for high-speed data communication and isolation in various electronic applications. This component is particularly notable for its ability to provide electrical isolation between different parts of a circuit, which is essential for protecting sensitive components from voltage spikes and noise.

Key Features:

1. Isolation Voltage: The HCPL-7721-000E offers a high isolation voltage, typically rated at 5000 VRMS, ensuring robust protection against electrical interference and surges.

2. Data Rate: This optocoupler supports high-speed data transmission, with a typical data rate of up to 10 Mbps. This makes it suitable for applications requiring fast signal transfer, such as in communication systems and data acquisition.

3. Input and Output Configuration: The device features a photodiode and a phototransistor configuration. The input side consists of an LED that, when activated, emits light. This light is detected by the phototransistor on the output side, allowing for signal transfer while maintaining electrical isolation.

4. Temperature Range: The HCPL-7721-000E is designed to operate over a wide temperature range, typically from -40°C to +100°C, making it suitable for various environmental conditions.

5. Package Type: The component is available in a compact 8-pin DIP (Dual In-line Package) form factor, which facilitates easy integration into circuit boards and helps save space in electronic designs.

6. Low Power Consumption: The optocoupler is designed for low power consumption, which is beneficial for battery-operated devices and energy-efficient applications.

7. Applications: The HCPL-7721-000E is widely used in industrial automation, power supply control, motor drive circuits, and data communication interfaces. Its ability to provide isolation makes it ideal for interfacing between high-voltage and low-voltage systems.

Electrical Characteristics:

• Forward Voltage (Vf): The forward voltage drop across the LED is typically around 1.2V at a forward current of 10 mA.
• Collector-Emitter Voltage (Vce): The maximum collector-emitter voltage for the phototransistor is generally around 30V.
• Current Transfer Ratio (CTR): The device exhibits a high current transfer ratio, which is crucial for ensuring that the output signal is strong enough for further processing.

Conclusion:

The HCPL-7721-000E from Broadcom Inc. is a versatile and reliable optocoupler that provides essential isolation and high-speed data transfer capabilities. Its robust design and wide range of applications make it a popular choice among engineers and designers in various fields, including telecommunications, industrial control, and consumer electronics.