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GPIO Expander ICs - BU1850MUV

GPIO expander is useful especially for the application that is in short of IO ports. It can 1. Control GPIO output states by I2C write protocol. 2. Know GPIO input states by I2C read protocol Furthermore,it has the interrupt function that can release CPU from polling the registers in the GPIO expander. GPIO expander are also equipped with Built-in power on reset, 3V tolerant input,and NMOS open-drain output.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number
Unit Quantity
Minimum Package Quantity
Packing Type
Constitution Materials List
BU1850MUV-E2 Active VQFN016V3030 3000 3000 Taping inquiry Yes
Supply Voltage(Min.)[V] 1.65
Supply Voltage(Max.)[V] 3.6
Num. of GPIO port 8
Serial I/F I2CBUS
Power ON Reset Yes
Num. of Slave Address 2
Output Format CMOS output, OPEN Drain output
Operating Temperature (Min.)[°C] -30
Operating Temperature (Max.)[°C] 85
  • ・An 8-Port General purpose input/output interface 150kΩ Pull-down resistance.
    ・NMOS Open-drain output interrupt controller with up to 1us pulse noise filter
        and bit mask function for individual GPIO port.
    ・3 voltage tolerant Input
    ・Built-in Power On Reset
Technical Data
Application Note

Thermal Resistance