Overview
The PCA9674BS,118 is a remote 8-bit I/O expander produced by NXP USA Inc. This component is designed to provide general-purpose remote I/O expansion via the two-line bidirectional I²C-bus. It is particularly useful for applications requiring additional I/O ports while maintaining a compact footprint. The device is part of the Fast-mode Plus (Fm+) I²C-bus family, ensuring high-speed data transfer and robust communication capabilities.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 20-HVQFN (5x5) |
| Number of I/O Ports | 8 |
| I²C-bus Interface | 1 MHz Fast-mode Plus |
| Operating Supply Voltage | 2.3 V to 5.5 V |
| I/O Voltage Tolerance | 5.5 V tolerant |
| Output Sink Capability | 25 mA per port, 200 mA total package |
| Interrupt Output | Active LOW open-drain |
| Operating Temperature | -40°C to +85°C |
| ESD Protection | 2000 V HBM, 1000 V CDM |
Key Features
- Eight quasi-bidirectional I/O ports that default to inputs at power-up
- Latched outputs with 25 mA sink capability for directly driving LEDs
- 1 MHz I²C-bus interface with Fast-mode Plus capability
- SDA with 30 mA sink capability for 4000 pF buses
- Active LOW open-drain interrupt output
- Sixty-four programmable slave addresses using three address pins
- Readable device ID (manufacturer, device type, and revision)
- Software Reset feature to reset the device to Power-On Reset state
- Low standby current (4.5 μA typical)
Applications
- LED signs and displays
- Servers
- Key pads
- Industrial control systems
- Medical equipment
- Programmable Logic Controllers (PLCs)
- Cellular telephones and mobile devices
- Gaming machines
- Instrumentation and test measurement equipment
Q & A
- What is the PCA9674BS,118 used for? The PCA9674BS,118 is used for general-purpose remote I/O expansion via the I²C-bus.
- What type of I²C-bus interface does it support? It supports a 1 MHz Fast-mode Plus I²C-bus interface.
- What is the operating supply voltage range? The operating supply voltage range is from 2.3 V to 5.5 V.
- How many I/O ports does it have? It has 8 quasi-bidirectional I/O ports.
- What is the output sink capability per port? Each port has a 25 mA sink capability, with a total package sink capability of 200 mA.
- What is the interrupt output type? The interrupt output is an Active LOW open-drain.
- What is the operating temperature range? The operating temperature range is from -40°C to +85°C.
- What kind of ESD protection does it have? It has ESD protection exceeding 2000 V HBM and 1000 V CDM.
- Can the device be reset via software? Yes, the device can be reset to its Power-On Reset state via a software reset sequence.
- What are some common applications of this component? Common applications include LED signs, servers, key pads, industrial control systems, and medical equipment.
