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MCP23S18-E/SO The Microchip Technology MCP23S18-E/SO is a 16-bit IO Expander featuring a high-speed SPI interface and open-drain outputs. It operates over a voltage range of 1.8V to 5.5V.
Mfr Part #:

MCP23S18-E/SO

Available from 3 distributors
Mfr Name: Microchip Technology
Microchip Technology
The Microchip Technology MCP23S18-E/SO is a 16-bit IO Expander featuring a high-speed SPI interface and open-drain outputs. It operates over a voltage range of 1.8V to 5.5V.
✓ Total Stock: 7,956 pcs
$ Price Range: $1.15

MCP23S18-E/SO Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Smaxon Electronics ✓
Non-Authorised Inventory information
6,024 pcs
On Request
6024 pcs On Request 1 On Request On Request 21+ On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
1,842 pcs
On Request
1842 pcs On Request 1 On Request On Request On Request On Request On Request
Speed Components Ltd ✓
Non-Authorised Inventory information
90 pcs
On Request
90 pcs On Request 1 On Request On Request 2249 On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

MCP23S18-E/SO Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Frequency
Current
Interface
Interrupt Output
Mounting Type
Number of I
Operating Temperature
Output Type
Supplier Device Package
Supplier Package
Voltage
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MCP23S18-E/SO Description

Short technical summary and product information.

The Microchip Technology MCP23S18-E/SO is a versatile 16-bit remote bidirectional I/O port expander designed for SPI applications. It offers configurable interrupt output pins and supports interrupt-on-change functionality from configured defaults or pin changes. The device features open-drain outputs capable of sinking 25 mA per pin and a total of 400 mA.

 

With a high-speed SPI interface supporting up to 10 MHz, this I/O expander operates within a voltage range of 1.8V to 5.5V. It is specified for an operating temperature range of -40°C to 125°C. The MCP23S18/MCP23S18 devices provide 16-bit, general-purpose parallel I/O expansion.

 

Packaged in a 28-SOIC format, the MCP23S18-E/SO is suitable for surface mount applications. Its I/O pins default to input, and it includes a polarity inversion register to configure the polarity of the input port data. The device also features a single hardware address pin for I2C configurations, allowing up to eight devices on the bus, and an external reset input.

MCP23S18-E/SO Quick Information

Product Type: IO Expander
Canonical Name: MCP23S18 16-Bit SPI I/O Expander with Open-Drain Outputs
Subcategory: IO Expanders

MCP23S18-E/SO Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

MCP23S18-E/SO Estimated Pricing

Qty Low High
1+ $1.15 $1.15

Estimated market price range - modelled values for guidance only, not live distributor offers.

MCP23S18-E/SO Features

  • 16-bit bidirectional I/O port.
  • High-speed SPI interface up to 10 MHz.
  • Open-drain outputs, 25 mA sink capable.
  • Operating voltage from 1.8V to 5.5V.
  • Configurable interrupt output pins.

MCP23S18-E/SO Applications

  • Ideal for general-purpose I/O expansion.
  • Suitable for SPI communication systems.
  • Used in embedded control applications.
  • Provides flexible input/output control.

MCP23S18-E/SO FAQs

5 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the MCP23S18-E/SO?

The operating voltage range is 1.8V to 5.5V.

What is the maximum clock frequency for the MCP23S18-E/SO?

The maximum clock frequency for the SPI interface is 10 MHz.

What type of outputs does the MCP23S18-E/SO feature?

It features open-drain outputs.

What is the operating temperature range for this IO Expander?

The operating temperature range is -40°C to 125°C.

Does the MCP23S18-E/SO have interrupt capabilities?

Yes, it has configurable interrupt output pins.

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