Nexperia NCA6416 Low-Voltage 16-Bit I/O Expanders
Nexperia NCA6416 Low-Voltage 16-Bit I/O Expanders are developed for microcontrollers that require additional I/O pins. The device transmits via an I²C-bus interface, making it ideal for applications with minimal space and wiring. These applications include battery-powered devices employing sensors, keypads, push buttons, or LED control for managing LED brightness.
The Nexperia NCA6416 incorporates four pairs of 8-bit registers: configuration, input, output, and polarity inversion. By default, all I/O pins are configured as inputs at power-on. A system controller can dynamically reconfigure these pins as inputs or outputs by writing to the configuration register. The Input and Output registers reserve the current state of each pin. The polarity inversion register enables the inversion of the polarity of the input pins, which can facilitate logic in the system by eliminating the requirement for external gates.
Features
- I2C bus to parallel port expander
- Supply voltage range of 1.65V to 5.5V
- Allows bidirectional voltage-level translation and GPIO expansion between:
- 1.8V SCL/SDA and 1.8V, 2.5V, 3.3V or 5V Port P
- 2.5V SCL/SDA and 1.8V, 2.5V, 3.3V or 5V Port P
- 3.3V SCL/SDA and 1.8V, 2.5V, 3.3V or 5V Port P
- 5V SCL/SDA and 1.8V, 2.5V, 3.3V or 5V Port P
- Low standby current consumption:
- 1.5μA typical at 5V VCC
- 1.0μA typical at 3.3V VCC
- Schmitt-trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs
- Vhys = 0.18V (typical) at 1.8V
- Vhys = 0.25V (typical) at 2.5V
- Vhys = 0.33V (typical) at 3.3V
- Vhys = 0.5V (typical) at 5V
- 5V tolerant I/O ports
- Active LOW reset input (RESET)
- Open-drain active LOW interrupt output (INT)
- 400kHz fast-mode I²C-bus
- Input/Output configuration register
- Polarity inversion register
- Internal power-on reset
- Glitch-free power-up
- No power-up sequence required
- Partial power down supported
- Noise filter on SCL/SDA inputs
- Latched outputs with 25mA drive maximum capability for directly driving LEDs
- Latch-up performance exceeds 100mA per JESD 78, Class II
- ESD protection:
- HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000V
- CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000V
- TSSOP24 and HWQFN24 packages
- Specified from -40°C to +85°C and from -40°C to +125°C
Applications
- Battery-powered devices
- Sensors
- Keypads
- Push buttons
- LED control for managing LED brightness
Block Diagram
Associated Products
Nexperia NCA9548A 8-Channel I²C Bus Switches
Octal bidirectional translating switches controlled through the I2C-bus.
Nexperia NCA9547A 8-Channel I²C Bus Multiplexers
Octal bidirectional translating devices managed by the I2C bus.