TLP2770(D4-TP,E

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Optoisolators - Logic Output

The TLP2770 (D4-TP,E) is an optoisolator manufactured by Toshiba that features a logic output suitable for driving CMOS devices. The device is built using an optically coupled two-terminal logic detector, and its output is configured to meet the requirements of a low power logic circuit. The optoisolator is composed of a light source and a photodetector. The light source emits light, which is detected by the photodetector. When the photodetector senses the light, it generates an output voltage. This output voltage is used to drive the logic circuit.

Application Field

The TLP2770 is widely used in a variety of industries including the automotive industry, consumer electronics, data processing applications, communication networks, and medical equipment. The device is particularly useful where high-isolation and a long lifetime are required. It is also used to protect input and output circuits from damage due to static discharges, surge current, inductive noise, and noise from the power supply.

Working Principle

The optoisolator works by the principle of photoconductivity. The input signal is fed to the light source, which in turn emits light depending on the strength of the input signal. This light is then detected by the photodetector. The output is generated in response to the light intensity detected. The output can be either an ‘on’ or ‘off’ signal depending on the intensity of the input signal.

The TLP2770 features a wide operating temperature range of -25 to +85°C with a low power consumption of only 3.5mW when used in combination with a CMOS logic circuit. It also features a wide common mode transient immunity of 3000V/µs. The device has a high transfer ratio, which enables it to produce an output signal that is close to the input signal. The TLP2770 is available in a miniature (5mm x 3.3mm) 16 pin DIP and 16 pin lead (Pb) free TSSOP packages.

Safety Measures

The TLP2770 is built using UV epoxy which allows it to resist severe temperature, vibration, and humidity conditions. It also has a surge and discharge rating of 8Ω to further improve safety. The device is designed to be used in circuits with an operating voltage of ≤5.5V and delivers a maximum current of 25mA. The device also contains an alert pin that will alert the user if the voltage drops below a threshold.

Conclusion

The TLP2770 (D4-TP,E) optoisolator from Toshiba is a highly reliable device that can be used in a variety of applications. It features a wide operating temperature range and a low power consumption. It also features a wide common mode transient immunity of 3000V/µs and a high transfer ratio. The device is built using UV epoxy and contains an alert pin that will alert the user if the voltage drops below a threshold.

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