MCP23017T-E/SSVAO

I/o Expanders Overview

The MCP23017T-E/SSVAO is an AEC-Q100 qualified, 16-bit I/O expander featuring an I2C interface. It operates within a supply voltage range of 1.8V to 5.5V and supports clock frequencies up to 1.7 MHz. The device provides 16 bidirectional I/O pins (GPA0-GPA7, GPB0-GPB7) with configurable interrupt outputs (INTA, INTB). It utilizes three hardware address pins to support up to eight devices on the bus. Key electrical specifications include a maximum standby current of 1 µA, output drive capability of 25 mA per pin, and operation across temperatures from -40°C to +125°C.

I/o Expanders Feature Summary

• AEC-Q100 automotive qualification for reliability
• Configurable interrupt-on-change or default value comparison
• Internal weak pull-up resistors on all I/O ports
• Polarity inversion register for input data configuration

I/o Expanders Applications

• Automotive embedded control systems
• Industrial sensor interface expansion
• Consumer electronics peripheral management

I/o Expanders Procurement Notes

Verify the 'VAO' suffix against Microchip documentation to confirm specific automotive grade variants or packaging distinctions. Ensure the SSOP-28 package matches the target PCB footprint. Confirm RoHS compliance status through official datasheets prior to final procurement decisions.

I/o Expanders Selection Notes

Select this component when I2C connectivity is required for expanding GPIO resources in space-constrained designs. The SSOP-28 package offers a compact surface-mount solution. Consider the MCP23S17 variant if SPI interface compatibility is preferred over I2C for the system architecture.

I/o Expanders Part Context

This part belongs to the MCP23X17 family of 16-bit I/O expanders. It shares functional registers and logic with the SPI-based MCP23S17 but differs in its serial communication protocol. The 'E' indicates extended temperature range capabilities, while 'SS' denotes the SSOP-28 package type.

I/o Expanders Replacement Considerations

The MCP23S17T-E/SS serves as a functional alternative for systems utilizing SPI instead of I2C. Other 16-bit I/O expanders from different manufacturers may require significant register mapping adjustments and interface driver modifications.