PCF8575PWR

I/o Expanders Overview

The PCF8575PWR is a remote 16-bit I2C and SMBus I/O expander manufactured by Texas Instruments. It operates within a supply voltage range of 2.5 V to 5.5 V and supports clock frequencies up to 400 kHz. The device features 16 bidirectional I/O lines, an interrupt output pin, and open-drain outputs. It is housed in a 24-TSSOP package and functions across a temperature range of -40°C to +85°C. Typical operating current is 200 µA, with ESD protection rated at 2 kV.

I/o Expanders Feature Summary

• Provides 16-bit remote I/O expansion via standard I2C and SMBus interfaces
• Includes dedicated interrupt output pin for efficient host notification
• Features high-current latch outputs capable of directly driving LEDs

I/o Expanders Applications

• Remote I/O expansion for microcontroller systems
• Keyboard and display driver circuits
• Industrial control panels requiring additional digital inputs/outputs

I/o Expanders Procurement Notes

Verify the specific suffix 'PWR' corresponds to the TSSOP-24 package and commercial temperature grade (-40°C to +85°C). Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets before procurement. Ensure the ordering part number matches the required package style and electrical specifications for your design.

I/o Expanders Selection Notes

Select this component when 16-bit I/O expansion is required over a two-wire bus interface. It is suitable for designs needing direct LED driving capability via its latch outputs. Consider the 24-TSSOP package constraints and verify that the I2C address configuration meets system requirements. Compare against similar expanders if higher drive current or different packaging is needed.

I/o Expanders Part Context

The PCF8575PWR belongs to the PCF8575 family of 16-bit I/O expanders from Texas Instruments. This series is designed for general-purpose remote I/O expansion in embedded systems. The PWR suffix specifically denotes the surface-mount TSSOP-24 package variant, distinguishing it from other package options like VQFN available in the same product line.

I/o Expanders Replacement Considerations

PCF8575CPWR: Same function with potentially different commercial vs industrial temperature rating verification. PCA9535: Similar 16-bit I2C expander but may differ in drive characteristics. PCA9555: Alternative 16-bit expander with comparable functionality.