PCA9574BS,118

I/o Expanders Overview

The PCA9574BS,118 is an 8-bit I2C-bus and SMBus GPIO expander featuring voltage level translation. It operates with a core supply of 1.1 V to 3.6 V and an I/O bank supply of 1.1 V to 3.6 V, enabling communication between incompatible logic levels. The device supports a 400 kHz clock frequency and includes an open-drain interrupt output. It provides configurable pull-up/pull-down resistors and bus-hold features. The component is housed in an HVQFN16 package and functions within an industrial temperature range of -40 °C to +85 °C.

I/o Expanders Feature Summary

• Dual supply rails allow independent operation of the core logic and I/O bank for voltage level shifting.
• Configurable I/O pins default to inputs at power-up with programmable polarity inversion.
• Open-drain interrupt output monitors input state changes with masking capabilities.
• Built-in reset functionality via hardware pin or software command initializes registers.

I/o Expanders Applications

• Cell phones
• Multi-voltage environments
• Battery operated mobile gadgets

I/o Expanders Procurement Notes

Verify the ordering suffix ,118 corresponds to the HVQFN16 package on a 13-inch reel. Confirm the manufacturer is NXP Semiconductors. Ensure the part number matches the specific datasheet revision required for the design. Check RoHS compliance status before finalizing procurement orders.

I/o Expanders Selection Notes

Select this component when mixed-signal designs require interfacing low-voltage processors with higher-voltage peripherals. The separate supply rails are critical for applications needing flexible voltage translation. Verify that the I/O current sourcing and sinking requirements align with the device specifications.

I/o Expanders Part Context

This part belongs to the PCA9574 family of I/O expanders designed for low-power mobile applications. It enhances previous generations by offering lower standby current and smaller packaging options like the HVQFN16. The series supports standard I2C protocols and includes advanced features like GPIO All Call addressing.

I/o Expanders Replacement Considerations

PCA9574PW,118 offers identical electrical characteristics but utilizes a TSSOP16 package instead of HVQFN16. Verify pin compatibility and thermal performance if substituting packages. No other direct functional replacements are documented in the provided source material.