HCPL-2219

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Optoisolators are a key component of equipment used for electronic signalling and data transfer. One such device is the HCPL-2219. Designed to offer a logic Output in applications that require high noise immunity, this optocoupler provides the ultimate in signal isolation between two connected circuits (i.e. isolated power supply and an automated industrial assembly line controller). The HCPL-2219 uses a special combination of components to achieve these levels of isolation.

The main component of the HCPL-2219 is an infrared LED that is connected to an electrical circuit. When current from an external circuit is applied to the LED, it emits infrared light which is received by a photosensitive integrated circuit (IC) which acts as the output buffer. This IC contains a set of logic gate transistors that control the output voltage level depending on the level of the input voltage. This IC also acts as an impedance buffer which further isolates the output of the device from the external circuit.

The HCPL-2219 can be used in a variety of applications including industrial automation, data communications, medical instrumentation, and military systems. In these applications, it is important for a degree of isolation between the connected systems as noise interference can have the potential to damage sensitive equipment. The HCPL-2219 can provide the necessary level of isolation to ensure reliable operation.

The HCPL-2219 has a high-voltage capability of up to 400V, making it suitable for use in mains-connected systems. It also has excellent dynamic characteristics with a fast switching speed of 6.5ns and low power consumption of just 20 mW. It has a TTL-compatible logic output of 5V with a sinking current of 10 mA and a source current of 2 mA. The logic compatible optocoupler also has a wide operating temperature range of -40?C to 85?C.

The HCPL-2219 is a robust and cost-effective device ideal for use in applications requiring isolation of one circuit from another. Due to the combination of low power consumption, fast switching speed, and wide temperature range, the HCPL-2219 is extremely versatile and suitable for use in a wide range of industrial and data communications systems.

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