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Product Variant Information section
Product Specification Section
Pricing Section

Stock: 4,851

On Order:Order inventroy details 13,912
Factory Stock:Factory Stock: 131,882
Factory Lead Time: 12 Weeks
Minimum Order: 1
Multiple Of: 1
Quantity Web Price
1 $1.32
26 $1.10
100+ $1.00


Attributes Table
Interface Circuit Type SPI
No of Channels 1
Clock Frequency-Max 10MHz
No of I/O Lines 16
Supply Voltage-Nom 1.8V to 5.5V
Supply Current 1mA
Features and Applications

The MCP23S17-E/SS is a Part of MCP23S17 Series 5.5 V 10 MHz 16-Bit I/O Expander with Serial Interface available in SSOP-28 Surface mount Package.

This device family provides 16-bit, general purpose parallel I/O expansion for I2C bus or SPI applications.


  • 16-bit remote bidirectional I/O port
    • I/O pins default to input
  • High-speed I2C™ interface (MCP23017)
    • 100 kHz
    • 400 kHz
    • 1.7MHz
  • High-speed SPI interface (MCP23S17)- 10 MHz (max.)
  • Three hardware address pins to allow up to eight devices on the bus
  • Configurable interrupt output pins
    • Configurable as active-high, active-low or open-drain
  • INTA and INTB can be configured to operate independently or together
  • Configurable interrupt source defaults or pin changes
  • Polarity Inversion register to configure the polarity of the input port data
  • External Reset input
  • Low standby current: 1 µA (max.)
  • Operating voltage:
    • 1.8V to 5.5V @ -40°C to +85°C
    • 2.7V to 5.5V @ -40°C to +85°C
    • 4.5V to 5.5V @ -40°C to +125°C