Overview
The PCA9671PW,112 is a remote 16-bit I/O expander designed by NXP USA Inc. It is part of the Fast-mode Plus (Fm+) family and provides general-purpose remote I/O expansion for most microcontroller families via the two-line bidirectional I²C-bus. This component is a drop-in upgrade for the PCF8575, offering higher I²C-bus speeds and enhanced capabilities.
Key Specifications
| Parameter | Value |
|---|---|
| Interface | I²C-bus |
| I²C-bus Speed | Up to 1 MHz |
| Number of I/O | 16 |
| Package | 24-TSSOP (0.173, 4.40mm Width) |
| Operating Voltage | 2.3 V to 5.5 V |
| I/O Drive Capability | 25 mA sink capability per pin |
| Total Package Sink Capability | 400 mA |
| Slave Addresses | 64 programmable addresses using 3 address pins |
| Reset Input | Active LOW reset input |
| Operating Temperature | -40 °C to +85 °C |
| ESD Protection | Exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 |
Key Features
- Compliant with I²C-bus Fast-mode and Standard-mode
- SDA with 30 mA sink capability for 4000 pF buses
- Latched outputs with 25 mA sink capability for directly driving LEDs
- Readable device ID (manufacturer, device type, and revision)
- Low standby current
- Programmable default states for the I/O pins
- Supports PWM dimming of LEDs due to higher I²C-bus speeds
Applications
The PCA9671PW,112 is suitable for various applications requiring remote I/O expansion, such as industrial control systems, automotive systems, consumer electronics, and any system needing to expand the I/O capabilities of a microcontroller. It is particularly useful in scenarios where high-speed data transfer and high current drive capabilities are necessary.
Q & A
- What is the PCA9671PW,112 used for? The PCA9671PW,112 is used for remote 16-bit I/O expansion in various microcontroller-based systems.
- What is the maximum I²C-bus speed of the PCA9671PW,112? The maximum I²C-bus speed is up to 1 MHz.
- How many I/O pins does the PCA9671PW,112 have? The PCA9671PW,112 has 16 I/O pins.
- What is the package type of the PCA9671PW,112? The package type is 24-TSSOP (0.173, 4.40mm Width).
- What is the operating voltage range of the PCA9671PW,112? The operating voltage range is 2.3 V to 5.5 V.
- Does the PCA9671PW,112 support PWM dimming of LEDs? Yes, it supports PWM dimming of LEDs due to its higher I²C-bus speeds.
- How many programmable slave addresses does the PCA9671PW,112 have? It has 64 programmable slave addresses using 3 address pins.
- What is the total package sink capability of the PCA9671PW,112? The total package sink capability is 400 mA.
- Does the PCA9671PW,112 have ESD protection? Yes, it exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101.
- What is the operating temperature range of the PCA9671PW,112? The operating temperature range is -40 °C to +85 °C.
