Bipolar transistors

Diodes

ESD protection, TVS, filtering and signal conditioning

MOSFETs

SiC MOSFETs

GaN FETs

IGBTs

Analog & Logic ICs

Automotive qualified products (AEC-Q100/Q101)

I²C General-Purpose I/O (GPIO)

Maximize the system design reuse with I²C GPIO Expanders

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. Housed in TSSOP24 and HWQFN24, these GPIO expanders are equipped with multiple features Interrupt, Hardware RESET, Internal pull-up resistors, and configurable pull-ups. These GPIO expanders features benefits such as extremely low static power consumptions and reduces the PCB design complexity through trace reduction and routing simplification thereby reducing the BOM cost.

Key features and benefits

  • Single supply GPIO expander supporting operating power supply voltage range of 1.65 V to 5.5 V operation
  • Serial to parallel (SDA to P0-P16) and parallel to serial (P0-P16) conversion with I²C protocol
  • Schmitt-trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs
  • Low power consumption of 2.5 µA maximum
  • 400 kHz operation (FM I²C mode)
  • 5 V tolerant I/Os and 16 I/Os pins which defaults to 16 inputs
  • Glitch free Power up with all channels configured as inputs with weak pull-up resistors
  • Latched outputs with 25 mA drive maximum capability for directly driving LEDs
  • Polarity Inversion Register
  • External RESET pin to reset state machine and internal registers
  • Noise filters on SCL and SDA inputs
  • Package offered : TSSOP24 and HWQFN24
  • Specified from -40 °C to +85 °C and -40 °C to +125 °C

Key applications

  • Servers and routers
  • TV and hardware control monitors
  • Gaming consoles and drones
  • Battery powered applications
  • Automotive applications (ADAS, VCU, DCU and BCM)
  • Surveillance cameras
  • Telecomm equipment

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Products

Type number Description Status Quick access
NCA9539BY-Q100 Low-voltage 16-bit I²C and SMBus low-power I/O expander with interrupt output, reset pin and configuration registers Production
PCA9555PW Low-voltage 16-bit I²C-bus I/O port with interrupt and weak pull-up Production
PCA9535PW Low-voltage 16-bit I²C and SMBus low-power I/O expander with interrupt output and configuration registers Production
NCA9535BY Low-voltage 16-bit I²C and SMBus low-power I/O expander with interrupt output and configuration registers Production
NCA9535PW-Q100 Low-voltage 16-bit I²C and SMBus low-power I/O expander with interrupt output and configuration registers Production
NCA9539PW Low-voltage 16-bit I²C and SMBus low-power I/O expander with interrupt output, reset pin and configuration registers Production
NCA9539BY Low-voltage 16-bit I²C and SMBus low-power I/O expander with interrupt output, reset pin and configuration registers Production
NCA9535BY-Q100 Low-voltage 16-bit I²C and SMBus low-power I/O expander with interrupt output and configuration registers Production
PCA9539PW Low-voltage 16-bit I²C and SMBus low-power I/O expander with interrupt output, reset pin and configuration registers Production
NCA9539PW-Q100 Low-voltage 16-bit I²C and SMBus low-power I/O expander with interrupt output, reset pin and configuration registers Production
NCA9595PW-Q100 Low-voltage 16-bit I²C and SMBus I/O expander with interrupt output, configuration registers and programmable pull-up resistors Production
NCA9535PW Low-voltage 16-bit I²C and SMBus low-power I/O expander with interrupt output and configuration registers Production
NCA9595PW Low-voltage 16-bit I²C and SMBus I/O expander with interrupt output, configuration registers and programmable pull-up resistors Production
NCA9555PW Low-voltage 16-bit I²C and SMBus I/O expander with interrupt output and configuration registers Production
NCA9555BY-Q100 Low-voltage 16-bit I²C and SMBus I/O expander with interrupt output and configuration registers Production
NCA9555PW-Q100 Low-voltage 16-bit I²C and SMBus I/O expander with interrupt output and configuration registers Production
NCA9555BY Low-voltage 16-bit I²C and SMBus I/O expander with interrupt output and configuration registers Production
Visit our documentation center for all documentation

Leaflet (1)
File name Title Type Date
Nexperia_document_leaflet_I2C_GPIO_expanders.pdf I2C GPIO Expanders 2023 Leaflet 2023-04-26

Outline 3d (1)
File name Title Type Date
sot355-1_3d.png plastic, thin shrink small outline package; 24 leads; 0.65 mm pitch; 7.8 mm x 4.4 mm x 1.1 mm body Outline 3d 2021-06-10

Software (2)
File name Title Type Date
NCA95XX_EVB_Software.zip NCA95XX EVB GUI Software 2023-03-12
NCA95XX_Arduino_Sketches.zip NCA95XX Arduino™ Sketch Examples Software 2023-03-12

User manual (2)
File name Title Type Date
UM90016.pdf NCA95xx GPIO expander EVB (Arduino™ shield compatible) User manual 2024-02-23
UM90017.pdf NCA95XX Evaluation Board: Quick-Start Guide User manual 2023-01-18

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Cross reference