PCF8575RGER

I/o Expanders Overview

The PCF8575RGER is a remote 16-bit I2C and SMBus I/O expander manufactured by Texas Instruments. It provides general-purpose digital input and output expansion via the I2C interface, supporting standard and fast modes up to 400 kHz. The device operates within a supply voltage range of 2.5 V to 5.5 V and features an interrupt output pin for efficient host monitoring. It is housed in a 24-VQFN package with a 4x4 mm footprint, suitable for surface-mount applications. The component includes ESD protection rated at 2 kV and functions across an industrial temperature range from -40°C to +85°C.

I/o Expanders Feature Summary

• Provides 16 bidirectional I/O channels accessible through a two-wire I2C serial interface.
• Includes a dedicated interrupt output pin that signals state changes to the host processor.
• Supports low-power operation with high-speed data transfer capabilities up to 400 kHz.

I/o Expanders Applications

• Remote I/O expansion in embedded systems requiring additional GPIO pins.
• Industrial control panels utilizing SMBus communication protocols.
• Consumer electronics devices needing compact I/O expansion solutions.

I/o Expanders Procurement Notes

Verify the specific ordering suffix to confirm the tape and reel packaging configuration intended for automated assembly processes. Ensure compatibility with existing PCB footprints by reviewing the mechanical dimensions provided in the official datasheet. Confirm RoHS compliance status if required by regulatory standards for the target market. Cross-reference the manufacturer part number with distributor catalogs to validate current availability and authenticity before finalizing procurement orders.

I/o Expanders Selection Notes

Select this component when a design requires expanding microcontroller GPIO resources via I2C without adding complex logic. The wide supply voltage range allows integration with both 3.3V and 5V logic systems. Consider the VQFN-24 package size for space-constrained layouts. Verify that the system's I2C bus speed requirements do not exceed the supported 400 kHz limit. Evaluate the interrupt functionality needs against the available interrupt pin on the device.

I/o Expanders Part Context

This part belongs to the PCF8575 family of 16-bit I/O expanders. It shares core functional specifications with variants like the PCF8575CRGER but differs in packaging and manufacturing revisions. The RGER suffix specifically denotes the VQFN-24 package type and associated reel packaging. It serves as a direct replacement for older generations within the same logical series, maintaining pinout compatibility where applicable.

I/o Expanders Replacement Considerations

The PCF8575CRGER is a verified alternative within the same product family, offering identical electrical characteristics. Both parts utilize the PCF8575 logic series and support the same I2C/SMBus interfaces. Designers should verify package-specific mechanical drawings when swapping between VQFN and other form factors to ensure proper board layout adaptation.