LEVEL SHIFTER WITH AUTOMATIC DIRECTION SENSING

Organization Name

TEXAS INSTRUMENTS INCORPORATED

Inventor(s)

Deric Wayne Waters of Dallas TX (US)

Roland Son of Richardson TX (US)

Sualp Aras of Dallas TX (US)

Ralph Braxton Wade, Iii of McKinney TX (US)

LEVEL SHIFTER WITH AUTOMATIC DIRECTION SENSING - A simplified explanation of the abstract

This abstract first appeared for US patent application 18611223 titled 'LEVEL SHIFTER WITH AUTOMATIC DIRECTION SENSING

The bidirectional level shifter circuit described in the abstract consists of driver circuits, comparators, and a control circuit. The first driver circuit has a driver output and an enable input, while the second driver circuit also has a driver output and an enable input. The first comparator has a comparator output, a reference input, and an input connected to the second driver output. The second comparator has a comparator output, a reference input, and an input connected to the first driver output. The control circuit includes inputs connected to the comparator outputs and outputs connected to the enable inputs.

The circuit allows bidirectional level shifting between two different voltage domains.
It includes driver circuits, comparators, and a control circuit for efficient operation.
The first and second comparators ensure proper voltage level detection for bidirectional communication.
The control circuit enables the activation of the driver circuits based on the comparator outputs.
Overall, the circuit facilitates seamless communication between devices operating at different voltage levels.

Potential Applications: - Interface circuits in mixed-voltage systems - Communication systems requiring bidirectional level shifting - IoT devices with multiple voltage domains

Problems Solved: - Efficient bidirectional level shifting between different voltage domains - Seamless communication between devices with varying voltage requirements

Benefits: - Improved compatibility between devices with different voltage levels - Enhanced reliability in data transmission - Simplified design and implementation of mixed-voltage systems

Commercial Applications: Title: "Advanced Bidirectional Level Shifter Circuit for Mixed-Voltage Systems" This technology can be utilized in: - Consumer electronics - Automotive electronics - Industrial automation systems

Questions about Bidirectional Level Shifter Circuits: 1. How does the bidirectional level shifter circuit ensure proper voltage level detection? 2. What are the key advantages of using a bidirectional level shifter circuit in mixed-voltage systems?

Original Abstract Submitted

A bidirectional level shifter circuit includes first and second driver circuits, first and second comparators, and a control circuit. The first driver circuit includes a first driver output and a first enable input. The second driver circuit includes a second driver output and a second enable input. The first comparator includes a first comparator output, a first reference input, and a first comparator input that is coupled to the second driver output. The second comparator includes a second comparator output, a second reference input, and a second comparator input is coupled to the first driver output. The control circuit includes a first control input coupled to the first comparator output, a second control input coupled to the second comparator output, a first control output coupled to the first enable input, and a second control output coupled to the second enable input.