SN65EPT22DR

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Logic level translators and shifters are a relatively new type of electronic device becoming increasingly popular due to their versatility and ability to perform a variety of tasks. The SN65EPT22DR is one such device, and its application fields and working principles are the focus of this article.

The SN65EPT22DR is a 5-channel low-voltage extended temperature range translator with dual-channel sourcing and sinking inputs. It is specifically designed for level shifting between devices operating at different voltage levels, and for use in extended temperature applications, the operating temperature range being from -40°C to +125°C.

The SN65EPT22DR is suitable for use in a variety of automotive applications and allows level shifting between 1.8 to 5.5-volt systems. It provides translation between active-high, active-low, or bi-directional data and actively terminates the inactive states in each channel. Extension to 10 channels is possible if a suitable current limiting element is added.

In terms of its working principle, the device consists of a two-stage amplifier consisting of amplifying transistors and diodes, which are connected by metallic bonds to the package terminals. The device supports the dual-channel source and sink outputs, allowing for level shifting between high-level and low-level devices. It has a fixed supply voltage of 3.3V, and the current sourcing capability of the SN65EPT22DR can be up to 8.7mA.

The SN65EPT22DR includes a single low on-resistance transistor output stage, coupled to a low VF frequency compensated output buffer stage. This helps to provide a low-activated delay time and improved overcurrent protection when there is an out-of-spec input voltage. The output stage also has protection diodes against overpowering and False-Trigger-Protection (FTP) diodes, which help to protect the device when biased at a low voltage.

In addition to its automotive applications, the SN65EPT22DR is well suited for industrial, consumer, and medical applications. Its low power consumption, low power dissipation, and small size make it an ideal choice for applications requiring high speed and precision level shifting. It is also compliant with RoHS environmental regulations, making it an even more viable option for use in environmentally sensitive environments.

In summary, the SN65EPT22DR is a versatile 5-channel translator and shifter, specifically designed for extended temperature applications. It is well suited for use in automotive, industrial, consumer, and medical applications, thanks to its low power consumption, low power dissipation, and small size. It features dual-channel sourcing and sinking inputs, active-high, active-low, or bi-directional data inputs, and fixed supply voltage of 3.3V. Furthermore, current sourcing capability is up to 8.7mA, and it has protection diodes against overpowering and False-Trigger-Protection (FTP) diodes to protect the device when biased at a low voltage.

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