TXB0104 Bi-Directional Level Shifter
Bi-directional level shifter for connecting 5V controllers to 3.3V sensors, displays, flash storage, and modules. Auto-detects signal direction. Not suitable for I2C or other open-drain buses; use a dedicated I2C level shifter for those interfaces.
Pinout
- LVleft-1
A-side low-voltage reference supply
Type · PowerVoltage · 1.2V to 3.6V per visible board text/datasheet family - A1left-2
bidirectional level-shift channel 1, low-voltage side
Type · Analog - A2left-3
bidirectional level-shift channel 2, low-voltage side
Type · Analog - A3left-4
bidirectional level-shift channel 3, low-voltage side
Type · Analog - A4left-5
bidirectional level-shift channel 4, low-voltage side
Type · Analog - OEleft-6
output-enable input
Type · GPIO - HVright-1
B-side high-voltage reference supply
Type · PowerVoltage · 3V to 5V per visible board text/datasheet family - B1right-2
bidirectional level-shift channel 1, high-voltage side
Type · GPIO - B2right-3
bidirectional level-shift channel 2, high-voltage side
Type · GPIO - B3right-4
bidirectional level-shift channel 3, high-voltage side
Type · GPIO - B4right-5
bidirectional level-shift channel 4, high-voltage side
Type · GPIO - GNDright-6
common ground
Type · GroundVoltage · 0V
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| LV | left-1 | Power | A-side low-voltage reference supply | 1.2V to 3.6V per visible board text/datasheet family |
| A1 | left-2 | Analog | bidirectional level-shift channel 1, low-voltage side | |
| A2 | left-3 | Analog | bidirectional level-shift channel 2, low-voltage side | |
| A3 | left-4 | Analog | bidirectional level-shift channel 3, low-voltage side | |
| A4 | left-5 | Analog | bidirectional level-shift channel 4, low-voltage side | |
| OE | left-6 | GPIO | output-enable input | |
| HV | right-1 | Power | B-side high-voltage reference supply | 3V to 5V per visible board text/datasheet family |
| B1 | right-2 | GPIO | bidirectional level-shift channel 1, high-voltage side | |
| B2 | right-3 | GPIO | bidirectional level-shift channel 2, high-voltage side | |
| B3 | right-4 | GPIO | bidirectional level-shift channel 3, high-voltage side | |
| B4 | right-5 | GPIO | bidirectional level-shift channel 4, high-voltage side | |
| GND | right-6 | Ground | common ground | 0V |
Pin details
12 connections- LVleft-1
A-side low-voltage reference supply
PowerVoltage · 1.2V to 3.6V per visible board text/datasheet family - A1left-2
bidirectional level-shift channel 1, low-voltage side
Analog - A2left-3
bidirectional level-shift channel 2, low-voltage side
Analog - A3left-4
bidirectional level-shift channel 3, low-voltage side
Analog - A4left-5
bidirectional level-shift channel 4, low-voltage side
Analog - OEleft-6
output-enable input
GPIO - HVright-1
B-side high-voltage reference supply
PowerVoltage · 3V to 5V per visible board text/datasheet family - B1right-2
bidirectional level-shift channel 1, high-voltage side
GPIO - B2right-3
bidirectional level-shift channel 2, high-voltage side
GPIO - B3right-4
bidirectional level-shift channel 3, high-voltage side
GPIO - B4right-5
bidirectional level-shift channel 4, high-voltage side
GPIO - GNDright-6
common ground
GroundVoltage · 0V
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