Overview
The PCF8575DGVRG4 is a 16-bit I2C and SMBus I/O expander produced by Texas Instruments. This device is designed to provide general-purpose remote I/O expansion for most microcontroller families via the I2C interface. It operates within a voltage range of 2.5-V to 5.5-V and is available in various package types, including SSOP, TVSOP, SOIC, TSSOP, and VQFN. The PCF8575 features a quasi-bidirectional input/output port, allowing each I/O to be used as either an input or an output without the need for a data-direction control signal. At power-on, all I/Os are set high, and they can be configured dynamically using the write mode.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2.5 | - | 5.5 | V |
| Power-on Reset Voltage (VPOR) | - | - | 2.5 | V |
| Input Diode Clamp Voltage (VIK) | - | - | -1.2 | V |
| Standby Current Consumption | - | - | 10 | μA |
| Operating Temperature Range | -40 | - | 85 | °C |
| I2C Clock Frequency | - | - | 100 | kHz |
Key Features
- I2C to parallel-port expander with a 16-bit quasi-bidirectional input/output port.
- Open-drain interrupt output.
- Low standby-current consumption of 10 μA maximum.
- Latched outputs with high-current drive capability for directly driving LEDs.
- No need for data-direction control signals; I/Os can be used as inputs or outputs dynamically.
- Operates within a voltage range of 2.5-V to 5.5-V.
- Available in various package types: SSOP, TVSOP, SOIC, TSSOP, and VQFN.
Applications
- Telecom Shelters: Filter Units
- Servers and Routers (Telecom Switching Equipment)
- Personal Computers and Personal Electronics
- Industrial Automation
- Products with GPIO-Limited Processors
Q & A
- What is the primary function of the PCF8575DGVRG4?
The PCF8575DGVRG4 is a 16-bit I2C and SMBus I/O expander designed to provide remote I/O expansion for microcontrollers.
- What is the operating voltage range of the PCF8575DGVRG4?
The device operates within a voltage range of 2.5-V to 5.5-V.
- What types of packages are available for the PCF8575DGVRG4?
The device is available in SSOP, TVSOP, SOIC, TSSOP, and VQFN packages.
- How are the I/Os configured at power-on?
At power-on, all I/Os are set high and can be used as inputs or outputs dynamically.
- What is the maximum standby current consumption of the PCF8575DGVRG4?
The maximum standby current consumption is 10 μA.
- Does the PCF8575DGVRG4 have an interrupt output?
Yes, it features an open-drain interrupt output.
- What is the maximum I2C clock frequency supported by the PCF8575DGVRG4?
The maximum I2C clock frequency is 100 kHz.
- Can the I/Os drive LEDs directly?
Yes, the latched outputs have high-current drive capability for directly driving LEDs.
- What is the operating temperature range of the PCF8575DGVRG4?
The operating temperature range is -40°C to 85°C.
- Do the I/Os require data-direction control signals?
No, the I/Os can be used as inputs or outputs without the need for data-direction control signals.
