PCA9536D,112

I/o Expanders Overview

The PCA9536D,112 is a CMOS device providing 4-bit General Purpose parallel Input/Output (GPIO) expansion for I2C-bus and SMBus applications. It operates within a supply voltage range of 2.3 V to 5.5 V and supports clock frequencies from 0 Hz to 400 kHz. The component features 5 V tolerant I/Os with an internal power-on reset that initializes the device state machine upon power application. It includes a polarity inversion register and noise filters on SCL and SDA inputs. The package is SO8 plastic small outline with a body width of 3.9 mm.

I/o Expanders Feature Summary

• Provides 4-bit I2C-bus GPIO expansion
• Includes polarity inversion register for data control
• Features low standby current consumption
• Offers ESD protection exceeding 2000 V HBM

I/o Expanders Applications

• ACPI power switches
• Sensors
• Push buttons
• LEDs
• Fans

I/o Expanders Procurement Notes

Verify the specific ordering suffix '112' corresponds to the tube packing method as defined in the official NXP documentation. Confirm the manufacturer designation matches NXP USA Inc. or NXP Semiconductors. Ensure the part number aligns with the SO8 package variant. Cross-reference the revision history to confirm the datasheet version matches the production batch requirements.

I/o Expanders Selection Notes

Select this component when additional I/O is required for systems utilizing I2C or SMBus protocols. It is suitable for designs needing 4-bit expansion with configurable input/output directions. Consider the operating temperature range of -40°C to +85°C for environmental compatibility. Verify that the fixed slave address constraint fits the bus topology requirements.

I/o Expanders Part Context

The PCA9536D,112 belongs to the PCA9536 family of I2C-bus I/O expanders developed by NXP Semiconductors. This family enhances the capabilities of standard I2C interfaces by adding general-purpose parallel I/O lines. The D suffix indicates the SO8 package type, while the 112 suffix specifies the standard marking and tube packing configuration.

I/o Expanders Replacement Considerations

Direct substitutes include the Texas Instruments PCA9536D and PCA9536DRG4. Other variants such as PCA9536DP,118 and PCA9536TK,118 offer alternative packaging options like TSSOP8 and HVSON8 respectively.