ADP5588ACPZ-R7B2

Overview

The ADP5588ACPZ-R7B2 is an I/O expander and column keypad scanner manufactured by Analog Devices Inc. It features 18 general-purpose I/Os and operates on a supply voltage ranging from 1.7 V to 3 V. The device supports I2C and Serial interfaces with a maximum clock frequency of 400 kHz. It includes interrupt output capabilities and is housed in an LFCSP-24 package. The component functions with open-drain outputs and lacks integrated ESD protection. It is designed for surface mount installation and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates column keypad scanning functionality alongside general-purpose I/O expansion
• Provides interrupt output capability for efficient event handling
• Supports standard I2C and serial communication protocols

Applications

• Mobile phone peripheral interface expansion
• Portable electronic device input control
• Embedded system I/O port extension

Procurement Notes

Verify the specific suffix B2 against official Analog Devices documentation to confirm pinout or functional variations relative to the standard ADP5588ACPZ-R7. Ensure compatibility with existing PCB footprints and firmware configurations before procurement, as suffixes may indicate specific manufacturing revisions or testing criteria not covered in generic datasheets.

Selection Notes

Select this component when designing systems requiring combined keypad scanning and GPIO expansion within a low-voltage environment. Confirm that the 1.7 V to 3 V operating range aligns with the target system power rails. Verify that the absence of internal ESD protection meets the design requirements or if external protection circuits are necessary for the application environment.

Part Context

This part belongs to the ADP5588 series of I/O expanders from Analog Devices. It is distinct from other series members like the ADP5585, which offers fewer I/Os and different electrical characteristics. The ADP5588 is specifically engineered for applications needing robust keypad interfacing capabilities integrated with general-purpose digital I/O management in compact packages.

Replacement Considerations

Direct substitutes include the ADP5588ACPZ-R7. Verify if the B2 suffix denotes a specific revision or packaging variant that requires exact matching. Cross-reference pinouts and electrical specifications with alternative I/O expanders from other manufacturers only if functional equivalence is confirmed through detailed datasheet comparison.