ACPL-K64L-060E

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Optoisolators - Logic Output

ACPL-K64L-060E Application Field and Working Principle

• Introduction

The NXP Semiconductors ACPL-K64L-060E is a high-performance low power optocoupler. It is designed to provide reliable digital isolation between grounds of two control circuits. This device is a single channel phototransistor output optocoupler with a typical CTR (Current Transfer Ratio) of 500%. It has a logic output device whose output is designed to interface directly with TTL/CMOS logic circuits. The ACPL-K64L-060E optocoupler can provide a wide range of supply voltages. It is typically rated for 1500 Vrms of input-output isolation and multiple safety approvals including UL and cUL.

• Application Field

Typical applications for the ACPL-K64L-060E include isolating two ground potentials in data or logic circuits and electrical noise suppression. It is also well-suited for gate driver applications such as LED displays. Its small size and wide input-output isolation make it an ideal choice for a wide variety of applications.

The ACPL-K64L-060E is UL approved and suitable for use in a variety of lighting and illumination systems. Examples of lighting and illumination applications include automotive lighting, LED lighting systems, decorative lighting, exit signs, and fire systems. The ACPL-K64L-060E can also be used in industrial automation equipment such as HVAC systems, and electrical motor control.

• Working Principle

The ACPL-K64L-060E optocoupler works on the principle of optoelectronic diode isolation. An infrared LED is used to transmit a light signal to a phototransistor on the other side of the device. By varying the amount of current running through the LED, the amount of light emitted is varied and this is used to vary the output voltage. The output of the phototransistor is then either high or low, depending on the amount of light received.

The output of the optocoupler is designed to interface directly to CML or TTL logic circuits. This type of logic has two logic families, one that is active low and another that is active high. When the logic is active low then the output of the optocoupler is “0” when there is no light present and “1” when light is present and vice versa for the active high logic.

• Conclusion

The NXP Semiconductors ACPL-K64L-060E is a versatile, low power optocoupler that is designed for providing reliable and secure electrical isolation between control circuits. Its ability to interface with both TTL and CMOS logic circuits makes it a great choice for a variety of applications, such as automotive lighting systems, LED lighting, industrial automation equipment, and fire safety systems.

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