Data Rate:	25MBd
Supplier Device Package:	8-SO
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	4.5 V ~ 5.5 V
Current - DC Forward (If) (Max):	--
Voltage - Forward (Vf) (Typ):	--
Rise / Fall Time (Typ):	9ns, 8ns
Propagation Delay tpLH / tpHL (Max):	40ns, 40ns
Series:	--
Current - Output / Channel:	10mA
Output Type:	Push-Pull, Totem Pole
Input Type:	Logic
Common Mode Transient Immunity (Min):	10kV/µs
Voltage - Isolation:	3750Vrms
Inputs - Side 1/Side 2:	1/0
Number of Channels:	1
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to HCPL-0721#500

HCPL-0721#500 is part of the Optoisolators – Logic Output family of products by Avago Technologies, Inc. It is a family of optically coupled logic gates designed to provide a high degree of electrical isolation, as well as high common-mode transient immunity between input and output circuits. The HCPL-0721#500 provides a single channel of digital isolation between the source and the output, offering guaranteed 500V logic gate performance and controlled propagation delay.

Typical Applications

The HCPL-0721#500 has a wide variety of potential applications, including industrial control, switching power supply protection, medical, systems design, and building automation.In industrial control and systems design, the HCPL-0721#500 can be used for manufacturing processes or digital simulations, such as running digital logic circuits to control a motor or to simulate the operation of a pump or steering system. In switching power supply protection, the HCPL-0721#500 can be used to isolate the switching power supply from the power line to prevent transients, overvoltage, and overcurrent from disrupting the circuit. In medical applications, optically coupled logic outputs can be used for diagnosis and testing, isolating patient input from output. In building automation, the HCPL-0721#500 can be used as a gate in distributed control systems, such as elevator control systems, HVAC systems, with high reliability, and low power requirements.

Working Principle

The HCPL-0721#500 consists of a gallium arsenide infrared (GaAs IR) LED optically coupled with a monolithic silicon detector which helps provide isolation from up to 500V logic gate performance and has a guaranteed controlled propagation delay, making it suitable for many applications.The LED emits light when there is power on the input side. The light is then detected on the output side by the photovoltaic sensor. This photovoltaic detector is then used to convert the light energy into electricity, which is then used to power the OUT+ and OUT- pins. When the OUT+ or OUT- pins are high, the logic level is also high. The HCPL-0721#500 is a very small form factor making it ideal for space-restricted boards.

Conclusion

The HCPL-0721#500 can be used in a wide variety of applications, such as industrial control and systems design, switching power supply protection, medical applications, and building automation. The single channel of digital isolation, 500V logic gate performance, controlled propagation delay, small form factor, and low power consumption make it ideal for these applications. The HCPL-0721#500 provides users with a reliable, high-performance, and cost-effective solution for their optically coupled logic output needs.

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