ST16C32245TBR

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The ST16C32245TBR is a widely used part in the field of Logic - Translators and Level Shifters. It is made as a duo-in-one integrated circuit, providing a 5V-tolerant low-voltage bidirectional translator for data bus-powered applications. It supports fully-automatic data transceivers that use 5V logic level, making it preferable for logic-level translators requiring a 5V tolerant I/O voltage range.

A primary benefit of the ST16C32245TBR is that it enables efficient data transfer between a variety of system buses, no matter what the voltage requirements are. It supports wide voltage swing of 3.3V or 5V with a translation capability of up to 6V tolerant. The built-in short circuit protection eliminates the need for external voltage clamps, improving signal integrity and signal fidelity in the design.

Working Principle:
The ST16C32245TBR consists of two high-speed CMOS transmission gates, acting as a bidirectional level shifter. The user can configure the translator as either a low-voltage open drain (LV-OD), or a low-voltage wired-AND (LV-WA) with reverse polarity for applications on both sides of the circuit. A single external pull-up is enough to power both sides of the LV side, eliminating the need for an extra pull-up on the HV side.

When driving data from the LV side to the HV side of the ST16C32245TBR, an LV-OD configuration is needed. Here, the output driver of the output side of the translator will remain in the high impedance state until the data on the LV side is read. When data is read, the output driver of the output side will turn on and pull the output of the translator to the logic low state.

For applications where the data must be transferred from the HV side to the LV side, an LV-WA configuration is used. Here, the input driver on the LV side of the translator is wired and with reverse polarity, making it possible for the input driver to interpret any valid logic on the HV side. When the data on the HV side is valid, the input driver of the LV side will turn on and forward the data to the LV side.

Applications:
The ST16C32245TBR is designed primarily for data transfer from 3.3V and 5V logic level buses to and from 5V-tolerant higher voltage buses. This is particularly useful for communication between logic levels that are different in voltage and require frequent data exchange in real-world applications.

The translator can be used in a variety of industrial applications, such as process control, motor control and robotics automation. It is also used in medical imaging applications and in automotive and aviation industries. The versatility of being able to support 5V tolerant further makes it a preferred choice for applications facing challenging power supply voltage requirements.

Conclusion:
The ST16C32245TBR is a highly useful logic-level translator, designed for use in communication between different logic levels and power supply voltages. It allows for data transfers between 3.3V and 5V and is 5V tolerant, making it suitable for a wide range of applications requiring efficient data transfers and short-circuit protection. The translator is highly versatile and widespread in a number of industrial, automotive, medical and aviation applications.

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