MCP23017-E/SSVAO

I/o Expanders Overview

The MCP23017-E/SSVAO is a 16-bit I/O expander with an I2C interface, manufactured by Microchip Technology. It operates within a supply voltage range of 1.8V to 5.5V and supports clock frequencies up to 1.7MHz. The device provides 16 bidirectional I/O pins (GPA0-GPA7, GPB0-GPB7) housed in a 28-pin SSOP package. It features configurable interrupt outputs (INTA, INTB), internal weak pull-up resistors, and polarity inversion registers. The component is AEC-Q100 qualified for automotive applications.

I/o Expanders Feature Summary

• Supports high-speed I2C communication at standard, fast, and high-speed modes
• Provides two independent interrupt output pins with configurable trigger sources
• Includes internal weak pull-up resistors on all I/O ports
• Features hardware address selection allowing multiple devices on a single bus

I/o Expanders Applications

• Automotive embedded systems requiring robust I/O expansion
• Industrial control panels and sensor interfaces
• Consumer electronics utilizing I2C-based peripheral management

I/o Expanders Procurement Notes

Verify the specific suffix 'VAO' against official Microchip documentation to confirm any unique packaging or material specifications distinct from the standard MCP23017-E/SS variant. Ensure compatibility with your system's I2C voltage levels and bus capacitance limits before finalizing orders.

I/o Expanders Selection Notes

Select this model when an I2C interface is required rather than SPI. Confirm that the SSOP-28 package fits your PCB layout constraints. Verify that the operating temperature range meets your environmental requirements, noting the extended range availability for higher temperatures.

I/o Expanders Part Context

This component belongs to the MCP23X17 family, which includes both I2C (MCP23017) and SPI (MCP23S17) variants. The MCP23017 specifically utilizes the I2C protocol for data transfer. The 'E' indicates an extended industrial temperature range, while 'SSOVAO' denotes the specific package type and potential automotive-grade qualification.

I/o Expanders Replacement Considerations

Direct functional replacements include other MCP23017 variants with different packages such as MCP23017-E/SO or MCP23017-E/SP. For SPI interfaces, the MCP23S17 series serves as the alternative. Ensure pinout compatibility and register mapping remain identical when substituting.