Overview
The PCA9673PW,112 is a 16-bit remote I/O expander produced by NXP USA Inc. It is designed to provide general-purpose remote I/O expansion for most microcontroller families via the two-line bidirectional I²C-bus. This device is part of the Fast-mode Plus (Fm+) family, offering enhanced I²C-bus speeds of up to 1 MHz, which is a significant upgrade over the 400 kHz speed of its predecessor, the PCF8575. The PCA9673PW,112 features a 16-bit quasi-bidirectional port and an I²C-bus interface, making it suitable for a wide range of applications requiring remote I/O expansion.
Key Specifications
| Parameter | Value |
|---|---|
| I²C-bus Interface Speed | Up to 1 MHz (Fast-mode Plus) |
| Supply Voltage | 2.3 V to 5.5 V |
| I/O Pins | 16-bit remote I/O pins |
| Output Drive Capability | 25 mA sink capability per pin, total package sink capability of 400 mA |
| Interrupt Output | Active LOW open-drain interrupt output |
| Slave Addresses | 16 programmable slave addresses using 2 address pins |
| 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
- Compliant with I²C-bus Fast and Standard modes
- SDA with 30 mA sink capability for 4000 pF buses
- 5.5 V tolerant I/Os
- Latched outputs with 25 mA sink capability for directly driving LEDs
- Active LOW open-drain interrupt output
- Readable device ID (manufacturer, device type, and revision)
- Low standby current
- Hardware reset pin (RESET) and software reset sequence
Applications
- LED signs and displays
- Servers
- Industrial control
- Medical equipment
- Programmable Logic Controllers (PLCs)
- Cellular telephones
Q & A
- What is the maximum I²C-bus speed of the PCA9673PW,112?
The PCA9673PW,112 supports I²C-bus speeds of up to 1 MHz in Fast-mode Plus.
- What is the supply voltage range for the PCA9673PW,112?
The supply voltage range is from 2.3 V to 5.5 V.
- How many I/O pins does the PCA9673PW,112 have?
The device has 16-bit remote I/O pins.
- What is the output drive capability of the PCA9673PW,112?
Each pin has a 25 mA sink capability, with a total package sink capability of 400 mA.
- Does the PCA9673PW,112 have an interrupt output?
Yes, it has an active LOW open-drain interrupt output.
- How many programmable slave addresses are available on the PCA9673PW,112?
There are 16 programmable slave addresses using 2 address pins.
- What is the operating temperature range of the PCA9673PW,112?
The operating temperature range is from -40°C to +85°C.
- What kind of ESD protection does the PCA9673PW,112 offer?
The device exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101.
- What package options are available for the PCA9673PW,112?
The device is available in SO24, TSSOP24, HVQFN24, and DHVQFN24 packages.
- Can the PCA9673PW,112 be used to drive LEDs directly?
Yes, the latched outputs have a 25 mA sink capability, which is sufficient for directly driving LEDs.
