PCA9671DB,112

Product Overview

Category: Integrated Circuit (IC)

Use: The PCA9671DB,112 is a versatile 8-bit I2C-bus and SMBus I/O expander designed for general-purpose input/output expansion applications. It provides an easy way to increase the number of I/O pins available in a microcontroller-based system.

Characteristics: - 8-bit bidirectional I/O port - I2C-bus and SMBus compatible - Low standby current consumption - Schmitt trigger action on all inputs - Noise filter on SCL/SDA inputs - Internal power-on reset - Active LOW reset input - 5 V tolerant inputs - Open-drain interrupt output - Address by three hardware address pins - 400 kHz Fast-mode I2C-bus - ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101

Package: The PCA9671DB,112 comes in a small outline package (SO) with 16 pins.

Essence: The essence of PCA9671DB,112 lies in its ability to expand the number of I/O pins in a microcontroller-based system, providing flexibility and increased functionality.

Packaging/Quantity: The PCA9671DB,112 is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply voltage range: 2.3 V to 5.5 V
• Operating temperature range: -40°C to +85°C
• I/O voltage level: 0 V to VDD
• Standby current: 1 μA (typical)
• Output current: ±10 mA
• Input leakage current: ±1 μA

Pin Configuration

The PCA9671DB,112 has a total of 16 pins. The pin configuration is as follows:

```

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| | | 1 2 3 | |_____________| | | | 4 5 6 | |_____________| | | | 7 8 9 | |_____________| | | | 10 11 12 | |_____________| ```

Pin Description: 1. SDA - Serial Data Line 2. SCL - Serial Clock Line 3. INT - Interrupt Output 4. A0 - Hardware Address Bit 0 5. A1 - Hardware Address Bit 1 6. A2 - Hardware Address Bit 2 7. GND - Ground 8. P0 - I/O Port 0 9. P1 - I/O Port 1 10. P2 - I/O Port 2 11. P3 - I/O Port 3 12. P4 - I/O Port 4

Functional Features

• Bidirectional I/O expansion: The PCA9671DB,112 provides 8-bit bidirectional I/O port, allowing for easy expansion of I/O pins in a microcontroller-based system.
• I2C-bus and SMBus compatibility: It is compatible with both I2C-bus and SMBus protocols, ensuring seamless integration into existing systems.
• Low standby current consumption: The device consumes very low standby current, making it suitable for battery-powered applications.
• Schmitt trigger action: All inputs feature Schmitt trigger action, providing noise immunity and improved signal integrity.
• Noise filter: The SCL/SDA inputs are equipped with a noise filter, further enhancing the reliability of communication.
• Power-on reset: The PCA9671DB,112 has an internal power-on reset circuitry that ensures proper initialization upon power-up.
• Reset input: An active LOW reset input allows for external reset control.
• 5 V tolerant inputs: The device supports 5 V tolerant inputs, enabling compatibility with both 3.3 V and 5 V systems.
• Open-drain interrupt output: The interrupt output is open-drain, allowing for easy integration with other devices.
• Addressing flexibility: The device can be addressed using three hardware address pins (A0, A1, A2), providing flexibility in system configuration.
• Fast-mode I2C-bus: It supports a fast-mode I2C-bus with a maximum frequency of 400 kHz.
• ESD protection: The PCA9671DB,112 offers robust ESD protection, exceeding industry standards.

Advantages and Disadvantages

Advantages: - Easy expansion of I/O pins - Compatibility with I2C-bus and SMBus protocols - Low standby current consumption - Noise