| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
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1,000 pcs
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1000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name | |
| Clock Frequency | |
| ESD Protection | |
| Industrial Grade | |
| Package / Case | |
| SVHC Present |
The NOVOSENSE NCA9555 is a 16-bit General Purpose Parallel Input/Output (GPIO) expansion device designed for I2C-bus applications. It provides a flexible solution for systems requiring additional I/O for components like ACPI power switches, sensors, push buttons, and LEDs.
The device features a configurable 8-bit configuration register for input or output selection, and input/output registers for data. It supports polarity inversion and has an open-drain interrupt output that activates when input states change, signaling the system master. The NCA9555 operates with a power supply voltage range of 2.3 V to 5.5 V and includes 5 V tolerant I/Os.
Key features include compatibility with microcontrollers, addressability via three hardware pins for up to eight devices on the same I2C-bus, and latched outputs with high-current drive capability suitable for directly driving LEDs. The device operates at clock frequencies from 0 Hz to 400 kHz and includes internal power-on reset and noise filters on SCL/SDA inputs.
The NCA9555 is supplied in a 24-pin TSSOP package with dimensions of 7.80mm x 4.40mm. Its ESD protection exceeds 2000 V HBM and 1000 V CDM, with latch-up testing exceeding 100 mA.
The operating power supply voltage range is 2.3 V to 5.5 V.
The I/Os are 5 V tolerant.
The clock frequency can range from 0 Hz to 400 kHz.
The NCA9555 is available in a TSSOP24 package.
The RoHS status is RoHS3 Compliant.
The Moisture Sensitivity Level is 1 Unlimited.