PCA9571GUX

I/o Expanders Overview

The PCA9571GUX is an NXP USA Inc. CMOS device providing 8-bit General Purpose parallel Output (GPO) expansion. It operates on a 1 MHz I2C-bus interface with backward compatibility to Fast-mode (400 kHz) and Standard-mode (100 kHz). The component supports a supply voltage range of 1.1 V to 3.6 V and features latched push-pull outputs with a symmetrical current drive capability of 4 mA at 3.3 V. It includes internal Power-On Reset (POR) and Software Reset functions, low standby current consumption, and ESD protection exceeding 2000 V HBM. The device is housed in a 12-terminal XQFN12 package (SOT1174-1) measuring 1.70 x 2.00 x 0.50 mm.

I/o Expanders Feature Summary

• Supports 1 MHz I2C-bus speeds on lightly loaded buses (<100 pF) with improved power consumption.
• Provides readable device ID containing manufacturer name, part identification, and die revision.
• Includes internal Power-On Reset and Software Reset features for initialization.

I/o Expanders Applications

• Smartphones and tablets
• Portable medical equipment
• Portable instrumentation and test measurement

I/o Expanders Procurement Notes

Verify the specific ordering suffix 'X' against the official datasheet to confirm packaging details. Confirm RoHS compliance status and REACH registration requirements prior to integration. Ensure the design accounts for the specified operating temperature range of -40°C to +85°C. Validate that the application bus capacitance remains below 100 pF for optimal 1 MHz performance.

I/o Expanders Selection Notes

Select this component when 8-bit output expansion is required in space-constrained mobile applications. Ensure the host processor supports I2C communication at up to 1 MHz. Verify that the system voltage falls within the 1.1 V to 3.6 V operating range. Consider the XQFN12 package dimensions for PCB layout constraints.

I/o Expanders Part Context

The PCA9571GUX belongs to the PCA9571 family of remote 8-bit general purpose outputs designed for low-voltage processors. It is manufactured by NXP Semiconductors and utilizes the XQFN12 plastic package variant. The device is intended for battery-powered mobile applications where minimizing floor space and interconnections is critical.

I/o Expanders Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult NXP official resources for potential cross-references or updated product line replacements.