资 源 简 介
特性
OperaTIng Power-Supply Voltage Range of 1.65 V to 5.5 V
Allows BidirecTIonal Voltage-Level TranslaTIon and GPIO Expansion Between
1.8-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port
2.5-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port
3.3-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port
5-V SCL/SDA and 1.8-V, 2.5-V, 3.3-V, or 5-V P Port
I2C to Parallel Port Expander
Low Standby Current ConsumpTIon of 1 µA
Schmitt-Trigger Action Allows Slow Input Transition and Better Switching Noise Immunity at the SCL and SDA Inputs
Vhys = 0.18 V Typ at 1.8 V
Vhys = 0.25 V Typ at 2.5 V
Vhys = 0.33 V Typ at 3.3 V
Vhys = 0.5 V Typ at 5 V
5-V Tolerant I/O Ports
Active-Low Reset Input (RESET)
Open-Drain Active-Low Interrupt Output (INT)
400-kHz Fast I2C Bus
Input/Output Configuration Register
Polarity Inversion Register
Internal Power-On Reset
