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Nexperia I2C expanders

I2C general purpose I/O GPIO

Our NCA95xx family of General-Purpose I/O (GPIO) expanders provides an elegant solution when additional I/Os are needed while keeping the interconnections to a minimum. Features include interrupt, Hardware RESET, Internal pull-up resistors, and configurable pull-ups. These GPIO expanders benefits include extremely low static power consumptions and reduces the PCB design complexity through trace reduction and routing simplification thereby reducing the BOM cost.

Key features

Low standby current consumption: 2.5 µA (maximum)
Schmitt-trigger action allows slow input transition and better switching noise immunity
Including a register configurable internal pull-up resistor.
Reduced output capacitance of 4.5 pF

Additional features

I²C-bus to parallel port expander
Operating power supply voltage range of 1.65 V to 5.5 V
Low standby current consumption:
2.5 µA (maximum)
Schmitt-trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs
Vhys = 0.10 × VCC (typical)
Noise filter on SCL and SDA inputs
5 V tolerant I/Os
16 I/O pins which default to 16 inputs
Open-drain active LOW interrupt output (INT)
400 kHz Fast-mode I²C-bus
Internal power-on reset
Power-up with all channels configured as inputs with weak pull-up resistors
No glitch on power-up
Latched outputs with 25 mA drive maximum capability for directly driving LEDs
Latch-up performance exceeds 100 mA per JESD78, Class II
ESD protection:
HBM ANSI/ESDA/JEDEC JS-001 Class 2 exceeds 2000 V
CDM ANSI/ESDA/JEDEC JS-002 Class C3 exceeds 1000 V
Specified from -40 °C to +85 °C