Overview
The PCA9674PW,118 is a remote 8-bit I/O expander produced by NXP USA Inc. This device is part of the I2C-bus Fast-mode Plus (Fm+) family, offering high-speed data transfer capabilities. It is designed to provide general-purpose remote I/O expansion via a two-line bidirectional I2C-bus interface. The PCA9674 and its variant, PCA9674A, are identical except for their non-overlapping slave addresses, allowing multiple devices to be connected on the same I2C-bus without the need for bus buffers.
Key Specifications
| Specification | Details |
|---|---|
| I2C-bus Interface | 1 MHz Fast-mode Plus (Fm+) |
| Number of I/O Pins | 8-bit remote I/O |
| Slave Addresses | 64 addresses for PCA9674, 62 addresses for PCA9674A |
| Operating Supply Voltage | 2.3 V to 5.5 V |
| I/O Pin Default State | Inputs with weak internal pull-up (100 μA current source) |
| Output Sink Capability | 25 mA per pin, total package sink capability of 200 mA |
| Interrupt Output | Active LOW open-drain interrupt output |
| Operating Temperature | -40°C to +85°C |
| Package Type | 16-TSSOP (Thin Shrink Small Outline Package) |
| ESD Protection | Exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 |
Key Features
- I2C-bus to parallel port expander with 1 MHz Fast-mode Plus interface
- SDA with 30 mA sink capability for 4000 pF buses
- Latched outputs with 25 mA sink capability for directly driving LEDs
- Active LOW open-drain interrupt output for indicating input state changes
- Software Reset to Power-On Reset state
- Low standby current (4.5 μA typical)
- Readable device ID (manufacturer, device type, and revision)
- ESD protection and latch-up testing according to JEDEC standards
Applications
- LED signs and displays
- Servers
- Key pads
- Industrial control
- Medical equipment
- PLCs (Programmable Logic Controllers)
- Cellular telephones
- Mobile devices
- Gaming machines
- Instrumentation and test measurement
Q & A
- What is the PCA9674PW,118 used for?
The PCA9674PW,118 is used for general-purpose remote I/O expansion via an I2C-bus interface.
- What is the I2C-bus interface speed of the PCA9674PW,118?
The I2C-bus interface speed is 1 MHz Fast-mode Plus (Fm+).
- How many I/O pins does the PCA9674PW,118 have?
The device has 8-bit remote I/O pins.
- What is the operating supply voltage range for the PCA9674PW,118?
The operating supply voltage range is 2.3 V to 5.5 V.
- What is the default state of the I/O pins at power-up?
The I/O pins default to inputs with a weak internal pull-up (100 μA current source).
- What is the output sink capability of the PCA9674PW,118?
The output sink capability is 25 mA per pin, with a total package sink capability of 200 mA.
- Does the PCA9674PW,118 have an interrupt output?
Yes, it has an active LOW open-drain interrupt output.
- What is the operating temperature range for the PCA9674PW,118?
The operating temperature range is -40°C to +85°C.
- What type of package does the PCA9674PW,118 come in?
The device comes in a 16-TSSOP (Thin Shrink Small Outline Package).
- What kind of ESD protection does the PCA9674PW,118 have?
The device exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 for ESD protection.
