PCA9535PWR

I/o Expanders Overview

The PCA9535PWR is a 16-bit I/O expander designed for I2C and SMBus interfaces, manufactured by Texas Instruments. It operates within a supply voltage range of 2.3 V to 5.5 V and supports clock frequencies up to 400 kHz. The device features an interrupt output capability and includes configuration registers for flexible pin direction control. Packaged in a 24-TSSOP format, it offers push-pull outputs with current capabilities of 10 mA (source) and 25 mA (sink). Operating temperatures span from -40°C to +85°C, ensuring reliability across industrial applications.

I/o Expanders Feature Summary

• Supports bidirectional data transfer via standard I2C and SMBus protocols
• Includes dedicated interrupt output pin for efficient event-driven monitoring
• Features remote configuration registers allowing individual pin direction setting

I/o Expanders Applications

• Portable systems requiring extended I/O capabilities
• Industrial control panels needing additional digital input/output channels
• Consumer electronics utilizing low-power interface expansion

I/o Expanders Procurement Notes

Verify the specific ordering suffix to confirm package type and tape/reel specifications. Ensure compatibility with existing I2C bus voltage levels before integration. Check RoHS compliance status if required by regional regulations. Confirm availability through authorized distributors as part status may vary. Validate ESD protection ratings against system requirements.

I/o Expanders Selection Notes

Select this component when a 16-bit expansion is necessary for I2C-based designs. Consider the TSSOP-24 package for surface-mount assembly constraints. Evaluate power consumption needs as the device operates at low currents. Compare with similar expanders like the PCA9555 if different logic families are preferred. Ensure the host controller supports the required SMBus/I2C speed.

I/o Expanders Part Context

This part belongs to the PCA9535 family of low-power I/O expanders. It serves as a bridge between microcontrollers and peripheral devices lacking native I2C support. The PWR suffix indicates the TSSOP-24 packaging variant. It complements other interface solutions by providing simple GPIO expansion without complex driver overhead.

I/o Expanders Replacement Considerations

The PCA9535PW is a direct equivalent in the same series. Verify pinout compatibility when substituting with variants from other manufacturers. Check datasheet differences regarding output drive strength and voltage thresholds.