Overview
The NXP PCA9670PW,118 is a remote 8-bit I/O expander designed for use with the Fast-mode Plus (Fm+) I²C-bus. This device provides general-purpose remote I/O expansion via a two-wire bidirectional I²C-bus interface. It is an upgrade to the PCF8574, offering higher I²C-bus speeds, increased I²C-bus drive, and higher total package sink capacity. The PCA9670PW,118 is housed in a TSSOP-16 package and is suitable for a wide range of applications requiring I/O expansion.
Key Specifications
| Attribute | Value |
|---|---|
| Interface Type | I2C (Fast-mode Plus) |
| Clock Frequency - Max | 1 MHz |
| No of I/O Lines | 8 |
| Supply Voltage - Nom | 2.3 V to 5.5 V |
| Supply Current | 266 µA |
| Package Style | TSSOP-16 |
| Mounting Method | Surface Mount |
| SDA Sink Capability | 30 mA for 4000 pF buses |
| Output Sink Capability | 25 mA per pin, 200 mA total package |
| Reset Input | Active LOW |
| Slave Addresses | 64 programmable using 3 address pins |
| Ambient Temperature Range | -40°C to +85°C |
Key Features
- 1 MHz I²C-bus interface compliant with Fast and Standard modes
- SDA with 30 mA sink capability for 4000 pF buses
- 8-bit remote I/O pins that default to inputs at power-up
- Latched outputs with 25 mA sink capability for directly driving LEDs
- Total package sink capability of 200 mA
- Active LOW reset input
- 64 programmable slave addresses using 3 address pins
- Readable device ID (manufacturer, device type, and revision)
- Low standby current
- ESD protection exceeds 2000V HBM per JESD22-A114 and 1000V CDM per JESD22-C101
Applications
- LED signs and displays
- Servers
- Industrial control
- Medical equipment
- PLCs
- Cellular telephones
- Gaming machines
- Instrumentation and test measurement
Q & A
- What is the PCA9670PW,118 used for?
The PCA9670PW,118 is used for general-purpose remote I/O expansion via the I²C-bus interface. - What is the maximum clock frequency of the PCA9670PW,118?
The maximum clock frequency is 1 MHz. - How many I/O lines does the PCA9670PW,118 have?
The device has 8 I/O lines. - What is the supply voltage range of the PCA9670PW,118?
The supply voltage range is from 2.3 V to 5.5 V. - What is the package style of the PCA9670PW,118?
The package style is TSSOP-16. - What is the total package sink capability of the PCA9670PW,118?
The total package sink capability is 200 mA. - How many programmable slave addresses does the PCA9670PW,118 support?
The device supports 64 programmable slave addresses using 3 address pins. - What is the ambient temperature range for the PCA9670PW,118?
The ambient temperature range is from -40°C to +85°C. - Does the PCA9670PW,118 support PWM dimming of LEDs?
Yes, it supports PWM dimming of LEDs due to its 1 MHz I²C-bus interface. - What kind of ESD protection does the PCA9670PW,118 have?
The device has ESD protection that exceeds 2000V HBM per JESD22-A114 and 1000V CDM per JESD22-C101.
