PCF8575DGVRG4

I/o Expanders Overview

The PCF8575DGVRG4 is a remote 16-bit I/O expander designed for I2C and SMBus interfaces, manufactured by Texas Instruments. It provides eight quasi-bidirectional inputs and outputs on Port 0 (P0) and Port 1 (P1), accessible via two 8-bit configuration registers. The device operates within a supply voltage range of 2.5 V to 5.5 V and supports clock frequencies up to 400 kHz in Fast Mode. It features an interrupt output pin that activates when any input state differs from its corresponding register value. The component is housed in a 24-pin TSSOP package with a wide operating temperature range of -40°C to +85°C.

I/o Expanders Feature Summary

• Provides 16 quasi-bidirectional I/O lines divided into two 8-bit ports for expanded digital control capabilities
• Supports standard I2C and SMBus communication protocols with configurable slave addresses
• Includes an active-low interrupt output pin to signal external microcontrollers regarding input state changes

I/o Expanders Applications

• Industrial control systems requiring additional digital I/O points
• Consumer electronics utilizing I2C-based peripheral expansion
• Embedded systems needing remote input monitoring and output driving

I/o Expanders Procurement Notes

Verify the specific suffix DGVRG4 against the manufacturer's official documentation to confirm the exact package type, tape and reel specifications, and environmental compliance status. Ensure the ordering information matches the required lead times and availability directly from authorized distributors or the manufacturer.

I/o Expanders Selection Notes

Select this component when a 16-bit I/O expansion solution is required over the I2C bus with interrupt capability. Consider the 2.5 V to 5.5 V operating range and the 400 kHz speed limit. Verify that the TSSOP-24 package fits the PCB layout constraints and that the voltage levels are compatible with the host controller.

I/o Expanders Part Context

This part belongs to the PCF8575 family of remote I/O expanders. It shares functional similarities with other devices in the series but is distinguished by its specific package designation and manufacturing revision. The family is widely used for adding digital inputs and outputs to microcontroller systems via serial interfaces.

I/o Expanders Replacement Considerations

Direct replacements include PCF8575DWRG4 and PCF8575PW. Verify pin compatibility and electrical characteristics before substitution. Other family members like PCA9535 offer similar functionality but may include configuration registers.