PS9821-2-AX Allicdata Electronics
Allicdata Part #:

PS9821-2-AX-ND

Manufacturer Part#:

PS9821-2-AX

Price: $ 3.25
Product Category:

Isolators

Manufacturer: CEL
Short Description: OPTOISO 2.5KV 2CH OPEN COL 8SSOP
More Detail: Logic Output Optoisolator 15Mbps Open Collector 25...
DataSheet: PS9821-2-AX datasheetPS9821-2-AX Datasheet/PDF
Quantity: 476
1 +: $ 2.94840
10 +: $ 2.45700
25 +: $ 2.06388
100 +: $ 1.76904
250 +: $ 1.57248
500 +: $ 1.42506
1000 +: $ 1.30712
2500 +: $ 1.25307
5000 +: $ 1.21867
Stock 476Can Ship Immediately
$ 3.25
Specifications
Data Rate: 15Mbps
Supplier Device Package: 8-SSOP
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Operating Temperature: -40°C ~ 85°C
Voltage - Supply: 2.7 V ~ 3.6 V
Current - DC Forward (If) (Max): 15mA
Voltage - Forward (Vf) (Typ): 1.65V
Rise / Fall Time (Typ): 20ns, 5ns
Propagation Delay tpLH / tpHL (Max): 75ns, 75ns
Series: NEPOC
Current - Output / Channel: 25mA
Output Type: Open Collector
Input Type: DC
Common Mode Transient Immunity (Min): 15kV/µs
Voltage - Isolation: 2500Vrms
Inputs - Side 1/Side 2: 2/0
Number of Channels: 2
Part Status: Active
Packaging: Bulk 
Description

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Optoisolators are electronic components commonly used in electrical engineering. An optoisolator is an input/output device which electrically isolates input and output signals. Optoisolators – Logic Output, such as PS9821-2-AX, are commonly used to provide electrical/optical isolation between integrated circuitry and a discrete system. This guide provides an overview of the PS9821-2-AX application field and working principle.

Application Field

The PS9821-2-AX is an optically isolated logic output for use in isolated digital interfaces and DC or AC operations. It is available with a wide range of voltage and power ratings, making it suitable for a variety of applications including:

  • General purpose DC-controlled switching
  • DC temperature control
  • TTL logic isolation
  • AC relay or solenoid control
  • Industrial control
  • Telecommunications
  • Robotics

Working Principle

The working principle of the PS9821-2-AX is based on electrical/optical isolation of the input and output signals. It consists of a light-emitting diode (LED) integrated circuit (IC) and a phototransistor. The LED IC applies a signal as a current at the input, which is converted into light by the LED. The light is then detected by the phototransistor, which amplifies the current and sends a corresponding signal to the output.

The light-emitting diode is a semiconductor diode that emits light when an electric current is applied. This effect is known as electroluminescence, and is what causes the LED to light up. When a current is applied to the LED, a voltage drop occurs across the diode, causing the electrons to recombine with the holes in the semiconductor material and release energy in the form of photons.

The phototransistor works by detecting light enabling it to respond to an input signal as current. When light hits the phototransistor, the current flow increases exponentially, which then results in a higher output voltage at the collector. The higher remaining electrons create a smaller voltage potential and therefore a higher current, which causes the transistor to switch on.

Benefits

Optoisolators, such as the PS9821-2-AX, provide the following benefits over other types of isolators:

  • Proven reliability and long life
  • High dielectric strength
  • High electrical noise immunity
  • Ability to isolate signals from ICs and discrete components
  • Low-power consumption

In addition, optoisolators can be used to reduce errors in measurement, improve reliability, and reduce the risk of electrical shock. These can all be important considerations when designing electrical and electronic systems.

Conclusion

The PS9821-2-AX is an optically isolated logic output specifically designed for use in isolated digital interfaces and DC or AC operations. This optoisolator provides electrical/optical isolation between input and output signals, resulting in improved accuracy, reliability, and safety. Optoisolators - Logic Output, such as the PS9821-2-AX, are capable of providing a wide range of voltage and power ratings, making them suitable for a variety of applications.

The specific data is subject to PDF, and the above content is for reference

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