Overview
The PCA8574TS112, produced by NXP USA Inc., is an 8-bit I²C-bus and SMBus I/O expander. This integrated circuit is designed to provide additional I/O ports to a microcontroller or other I²C-bus master device. It features eight quasi-bidirectional I/O ports, an I²C-bus interface operating at up to 400 kHz, and three hardware address inputs that allow multiple devices to be connected to the same I²C-bus. The device is suitable for a wide range of applications requiring expanded I/O capabilities.
Key Specifications
| Specification | Value |
|---|---|
| Supply Voltage Min | 2.3 V |
| Supply Voltage Max | 5.5 V |
| IC Package Type | SSOP (20 pins) |
| No. of Pins | 20 |
| Operating Temperature Min | -40°C |
| Operating Temperature Max | 85°C |
| Control Interface | I²C |
| No. of I/O's | 8 (quasi-bidirectional ports) |
| Supply Current | 200 µA |
| Clock Frequency | 400 kHz |
| Interrupt Output | Yes |
| Mounting Type | Surface Mount Device |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Key Features
- 8-bit I²C-bus and SMBus I/O expander with quasi-bidirectional I/O ports.
- I²C-bus interface operating at up to 400 kHz.
- Three hardware address inputs allowing multiple devices on the same I²C-bus.
- Interrupt output for signaling changes in the I/O port.
- Power-on reset (POR) feature.
- Low supply current of 200 µA.
- Operating voltage range from 2.3 V to 5.5 V.
- Operating temperature range from -40°C to 85°C.
Applications
- Expanding the I/O capabilities of microcontrollers or other I²C-bus master devices.
- Industrial control systems.
- Automotive systems requiring additional I/O ports.
- Consumer electronics needing expanded I/O functionality.
- Medical devices and diagnostic equipment.
- IoT devices and smart home applications.
Q & A
- What is the PCA8574TS112 used for?
The PCA8574TS112 is used to expand the I/O capabilities of microcontrollers or other I²C-bus master devices.
- What is the operating voltage range of the PCA8574TS112?
The operating voltage range is from 2.3 V to 5.5 V.
- What is the maximum clock frequency of the I²C-bus interface?
The maximum clock frequency is 400 kHz.
- Does the PCA8574TS112 have an interrupt output?
Yes, it has an interrupt output for signaling changes in the I/O port.
- What is the package type of the PCA8574TS112?
The package type is 20-pin SSOP.
- What is the operating temperature range of the PCA8574TS112?
The operating temperature range is from -40°C to 85°C.
- Is the PCA8574TS112 RoHS compliant?
Yes, it is lead-free and RoHS compliant.
- How many quasi-bidirectional I/O ports does the PCA8574TS112 have?
It has 8 quasi-bidirectional I/O ports.
- What is the moisture sensitivity level (MSL) of the PCA8574TS112?
The MSL is 1 (Unlimited).
- Does the PCA8574TS112 have power-on reset (POR) functionality?
Yes, it has a power-on reset (POR) feature.
