Voltage Level Shifter Calculator

Calculate voltage level shifting circuits for logic level conversion between different voltage domains. Supports MOSFET, resistor divider, and diode clamping methods.

Level Shifter Type

MOSFET Bidirectional Resistor Divider Diode Clamping

Input Low Voltage

Input High Voltage

Output Low Voltage

Output High Voltage

Drive Current

About Voltage Level Shifters

Voltage level shifters enable communication between circuits operating at different voltage levels. They're essential for interfacing modern low-voltage microcontrollers with legacy 5V systems.

Common Applications:

3.3V ↔ 5V: Microcontroller to Arduino interface
1.8V ↔ 3.3V: Modern SoC to peripheral interface
I2C/SPI: Multi-voltage bus communication
UART: Serial communication level shifting

Shifter Types:

MOSFET: Bidirectional, open-drain compatible
Resistor Divider: Simple, unidirectional down-shift
Diode Clamp: Protection against overvoltage
Dedicated ICs: TXS0108E, 74LVC245