Overview
The PCA9674APW,118 is a remote 8-bit I/O expander designed by NXP Semiconductors. This component provides general-purpose remote I/O expansion via the two-line bidirectional I²C-bus. It is particularly useful in applications requiring additional I/O ports while minimizing the number of pins used on the microcontroller. The device operates over a wide voltage range and supports various package types, making it versatile for different design needs.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | NXP Semiconductors |
| Package Type | TSSOP16 |
| Number of I/O | 8 |
| Supply Voltage | 2.3 V to 5.5 V |
| Operating Temperature | -40°C to +85°C |
| Interface | I²C |
| Clock Frequency | Up to 1 MHz |
| Interrupt Output | Yes |
| Output Type | Push-Pull |
| ESD Protection | 2000 V HBM, 1000 V CDM |
| Latch-up Testing | Exceeds 100 mA (JEDEC JESD78) |
Key Features
- Readable device ID (manufacturer, device type, and revision)
- Software Reset capability to return the device to Power-On Reset state
- Low standby current (typical 4.5 µA)
- ESD protection exceeding 2000 V HBM and 1000 V CDM
- Latch-up testing exceeding 100 mA (JEDEC JESD78)
- Support for General Call address and Device ID address
- No internal pull-up resistors on address pins; must be externally connected
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 PCA9674APW,118 used for?
The PCA9674APW,118 is used for remote 8-bit I/O expansion via the I²C-bus, providing additional I/O ports for microcontrollers.
- What is the operating voltage range of the PCA9674APW,118?
The operating voltage range is from 2.3 V to 5.5 V.
- What is the operating temperature range of the PCA9674APW,118?
The operating temperature range is from -40°C to +85°C.
- What interface does the PCA9674APW,118 use?
The PCA9674APW,118 uses the I²C interface.
- Does the PCA9674APW,118 have ESD protection?
Yes, it has ESD protection exceeding 2000 V HBM and 1000 V CDM.
- What is the typical standby current of the PCA9674APW,118?
The typical standby current is 4.5 µA.
- Does the PCA9674APW,118 support software reset?
Yes, it supports software reset to return the device to the Power-On Reset state.
- What are the address pins used for on the PCA9674APW,118?
The address pins (AD2, AD1, AD0) are used to choose one of 64 possible slave addresses.
- Are there internal pull-up resistors on the address pins?
No, there are no internal pull-up resistors on the address pins; they must be externally connected.
- What are some common applications of the PCA9674APW,118?
Common applications include LED signs, servers, key pads, industrial control, medical equipment, and more.
