Overview
The PCF8574AT/3,518 is a general-purpose remote I/O expansion component produced by NXP USA Inc. This device utilizes the two-wire bidirectional I²C-bus (serial clock (SCL), serial data (SDA)) for communication. It is designed to provide 8-bit remote I/O expansion for microcontrollers and other I²C-bus devices. The PCF8574AT/3,518 is part of the PCF8574/74A series, which offers a versatile solution for expanding the I/O capabilities of various systems.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | NXP USA Inc. |
| Part Number | PCF8574AT/3,518 |
| Package / Case | 16-SOIC (0.295, 7.50mm Width) |
| Mounting Type | Surface Mount |
| Number of I/Os | 8 |
| Operating Temperature | -40°C~85°C |
| Pin Count | 16 |
| Interface | I2C |
| Clock Frequency | 100kHz |
| Supply Voltage | 3/5V |
| Supply Current-Max | 0.1mA |
| Output Type | Push-Pull |
| Current - Output Source/Sink | 300μA / 25mA |
| Interrupt Output | Yes |
Key Features
- 8-bit remote I/O expansion via the I²C-bus.
- Two-wire bidirectional I²C-bus interface (SCL and SDA lines).
- Operating voltage range: 3V to 5V.
- Low supply current: maximum of 0.1mA.
- Push-pull output structure.
- Interrupt output capability.
- Power-on reset (POR) feature.
- Compliant with RoHS3 and EU RoHS standards.
Applications
The PCF8574AT/3,518 is suitable for a variety of applications where I/O expansion is necessary. These include:
- Microcontroller-based systems requiring additional I/O ports.
- Industrial control systems.
- Automated systems in manufacturing and process control.
- Consumer electronics requiring I/O expansion.
- Medical devices and diagnostic equipment.
Q & A
- What is the primary function of the PCF8574AT/3,518?
The primary function is to provide 8-bit remote I/O expansion via the I²C-bus. - What is the operating voltage range of the PCF8574AT/3,518?
The operating voltage range is 3V to 5V. - What is the maximum supply current of the PCF8574AT/3,518?
The maximum supply current is 0.1mA. - What type of output structure does the PCF8574AT/3,518 have?
The output structure is push-pull. - Does the PCF8574AT/3,518 have an interrupt output capability?
Yes, it does have an interrupt output capability. - What is the package type of the PCF8574AT/3,518?
The package type is 16-SOIC (0.295, 7.50mm Width). - Is the PCF8574AT/3,518 RoHS compliant?
Yes, it is compliant with RoHS3 and EU RoHS standards. - What is the clock frequency of the I²C-bus interface?
The clock frequency is 100kHz. - How many I/O ports does the PCF8574AT/3,518 provide?
The device provides 8-bit (1 port) I/O expansion. - What is the operating temperature range of the PCF8574AT/3,518?
The operating temperature range is -40°C to 85°C.
