Overview
The PCA9671PW118, produced by NXP USA Inc., is a remote 16-bit I/O expander designed for use with the I²C-bus. It is a drop-in upgrade for the PCF8575, offering higher I²C-bus speeds of up to 1 MHz, compared to the 400 kHz of its predecessor. This component is ideal for applications requiring expanded I/O capabilities with low current consumption and high current drive capability.
Key Specifications
| Specification | Value |
|---|---|
| I²C-bus Interface Speed | Up to 1 MHz |
| I²C-bus Compliance | Fast-mode and Standard-mode |
| Operating Voltage | 2.3 V to 5.5 V |
| I/O Pins | 16-bit remote I/O pins, default to inputs at power-up |
| Output Drive Capability | Latched outputs with 25 mA sink capability |
| Total Package Sink Capability | 400 mA |
| Reset Input | Active LOW reset input |
| Slave Addresses | 64 programmable slave addresses using 3 address pins |
| Device ID | Readable device ID (manufacturer, device type, and revision) |
| Operating Temperature | -40°C to +85°C |
| ESD Protection | Exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 |
| Package Options | SO24, TSSOP24, HVQFN24, DHVQFN24 |
Key Features
- High-speed I²C-bus interface up to 1 MHz
- Compliant with I²C-bus Fast-mode and Standard-mode
- SDA with 30 mA sink capability for 4000 pF buses
- Low current consumption and low standby current
- Latched outputs with 25 mA sink capability for directly driving LEDs
- Active LOW reset input and software reset sequence
- 64 programmable slave addresses using 3 address pins
- Readable device ID (manufacturer, device type, and revision)
- ESD protection exceeds 2000 V HBM and 1000 V CDM
Applications
- LED signs and displays
- Servers
- Industrial control
- Medical equipment
- Programmable Logic Controllers (PLCs)
- Cellular telephones
- Gaming machines
- Instrumentation and test measurement
Q & A
- What is the PCA9671PW118 used for? The PCA9671PW118 is used as a remote 16-bit I/O expander for microcontrollers via the I²C-bus.
- What is the maximum I²C-bus speed of the PCA9671PW118? The maximum I²C-bus speed is up to 1 MHz.
- What is the operating voltage range of the PCA9671PW118? The operating voltage range is from 2.3 V to 5.5 V.
- How many I/O pins does the PCA9671PW118 have? The PCA9671PW118 has 16-bit remote I/O pins.
- What is the output drive capability of the PCA9671PW118? The output drive capability is 25 mA sink capability per pin and a total package sink capability of 400 mA.
- Does the PCA9671PW118 have ESD protection? Yes, it exceeds 2000 V HBM and 1000 V CDM.
- What are the package options for the PCA9671PW118? The package options include SO24, TSSOP24, HVQFN24, and DHVQFN24.
- How many programmable slave addresses does the PCA9671PW118 support? It supports 64 programmable slave addresses using 3 address pins.
- Is the PCA9671PW118 suitable for high-temperature applications? Yes, it operates from -40°C to +85°C.
- Can the PCA9671PW118 be used to drive LEDs directly? Yes, it can drive LEDs directly with its latched outputs having 25 mA sink capability.
