SN65ELT20DGKR

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When looking for a reliable and solid-performing integrated circuit (IC) that can perform level shifter and signal translator operations, the SN65ELT20DGKR is a compelling choice for a range of applications. It is part of a larger family of signal-translating ICs produced by Texas Instruments, renowned for the dependability of its electronic components. This specific part is one of the Dual Bus-converter Translationals in the series, suitable for robust and stable signal transition between two buses.

When a device\'s power supplies or signal ranges do not match, the SN65ELT20DGKR is an effective solution, as it can take signals from one voltage and convert them to different voltages. This makes it especially useful when joined to systems that use parts from different vendor or kits. As an Added bonus, it perfor ms the signal translation with only a single external capacitor, thereby eliminating unnecessary bulk.

The SN65ELT20DGKR is a unidirectional bus translator with a dual-enable input, suitable for translating from TTL logic levels up to 18V and from 3.3V logic levels up to 15V. It also features an active high enable input to allow either logic level to be isolated, allowing easy integration with microcontrollers and other digital interface devices. Additionally, it features an adjustable disable voltage and 25 mA current drive. The translator can be used in 4-bit and 8-bit per-channel systems, as well as with multiple gate arrays.

The application for the SN65ELT20DGKR is primarily in level shifting between logic levels, and its working principle is to take input from one logic level and convert it to a different logic level. It does this by using the driving input to offset the reference voltage, so that the output voltage is determined by subtracting the voltage from the voltage input. In other words, the output voltage is directly proportional to the voltage. This means that signals from different logic levels can be converted to a new logic level, making it capable of handling both widely used digital signals and complex analog signals, with ultra-low power consumption.

To increase reliability and performance, the SN65ELT20DGKR incorporates open-drain N-channel MOSFETs configured in a common-source arrangement, providing low-impedance sources that can drive higher loads than identical devices operated in common-drain mode. This circuit also contains integrated voltage clamps, allowing in-rush current limiting and protection, while still providing sufficient current drive. To reduce the need for additional external components, the SN65ELT20DGKR also offers line regulation, maintains immunity to EMI, and is RoHS compliant, further reducing costs and assembly time.

In summary, the SN65ELT20DGKR is a superior-performing, unique translator IC for level conversion between two buses. With its active-high enable, adjustable disable voltage and 25 mA current drive, it is suitable for use with a wide range of microcontrollers and digital interfaces, and its integrated voltage clamps provide protection from in-rush current limiting and EMI without adding unnecessary external components. This state-of-the-art device puts level-shift and signal conversion within reach, making it an ideal low-cost solution for many applications.

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