HCNW138-300E

Output Type:	Darlington with Base
Supplier Device Package:	8-SMD
Package / Case:	8-SMD, Gull Wing
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Vce Saturation (Max):	--
Current - DC Forward (If) (Max):	20mA
Voltage - Forward (Vf) (Typ):	1.45V
Current - Output / Channel:	60mA
Voltage - Output (Max):	7V
Series:	--
Input Type:	DC
Rise / Fall Time (Typ):	--
Turn On / Turn Off Time (Typ):	11µs, 70µs
Current Transfer Ratio (Max):	--
Current Transfer Ratio (Min):	300% @ 1.6mA
Voltage - Isolation:	5000Vrms
Number of Channels:	1
Part Status:	Active
Packaging:	Tube

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Introduction

Optoisolators are optoelectronic devices that utilize an optical or electrical connection between input and output circuits to accomplish electrical isolation. The HCNW138-300E from Avago Technologies is a general purpose optoisolator that is designed for applications that require signal isolation, noise immunity and a high common mode voltage range. It offers a combination of electrical isolation and automatic frequency compensation (AFC) features that enable signal transmission in extremely noisy environments.

HCNW138-300E Application Field

The HCNW138-300E from Avago Technologies is an optoisolator that utilizes a photovoltaic output transistor for electrical isolation. This device features a high common-mode transient immunity (CMTI) of 85 kV/µs, providing superior signal integrity for long-distance signal isolation applications in noisy environments. The HCNW138-300E can be used in a wide range of industrial applications such as motor control circuits, programmable logic controllers (PLCs), navigation systems, and optical data transmission. It is also suitable for general-purpose analog and digital signal conditioning circuits, computer interfaces, and medical instrumentation.

HCNW138-300E Working Principle

The HCNW138-300E is an optoisolator that utilizes a photovoltaic output transistor to accomplish electrical isolation between the two circuits. The device comprises of an LED and a phototransistor, mounted side-by-side in an epoxy package. The LED is enclosed in an optically clear housing and has a clear plastic lens to allow full emitter radiation. When the LED is optically driven with signals, the resulting voltage across the phototransistor\'s base-emitter junction generates a current in the phototransistor enabling the circuits to be electrically isolated. The high input impedance of the phototransistor and its high current gain make it an ideal choice for robust isolation circuitry. The AFC feature of this optoisolator helps to boost signal transmission in noisy industrial environments by canceling out noise and providing a clean output signal.

Key Features

• High common mode transient immunity (CMTI) of 85 kV/µs• High input impedance• Automatic frequency compensation (AFC)• Dual channel design• Epoxy package for vibration and moisture protection• Long operating life• Low power consumption• Compatible with a wide range of I/O voltage levels

Conclusion

The Avago Technologies HCNW138-300E optoisolator is an ideal choice for a wide range of signal isolation and noise reduction applications in industrial environments. With its wide compatibility with I/O voltage levels, robust design, and high CMTI, the HCNW138-300E can be used for applications ranging from motor control circuits to medical instrumentation. The AFC feature ensures reliable signal transmission even in a noisy environment, making the HCNW138-300E a reliable and cost effective solution for signal isolation requirements.

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