MCP23S08-E/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
Microchip MCP23S08-E/P is an 8-bit SPI I/O expander in a DIP-18 package. It provides 8 general-purpose I/O pins via SPI interface operating from 1.8 V to 5.5 V. Available with 6-week lead time and worldwide shipping.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 18
- Lifecycle
- ACTIVE
- Datasheet
- MCP23S08-E/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2900(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP23S08-E/P?
- 8-bit general-purpose I/O expansion via SPI interface
- Wide supply voltage range: 1.8 V to 5.5 V operation
- Hardware address pins allow up to 4 devices on one SPI bus
- Interrupt output pin for efficient host notification
- DIP-18 package for easy through-hole prototyping
What is MCP23S08-E/P used for?
The MCP23S08-E/P is widely used in microcontroller-based systems requiring additional GPIO capacity, such as industrial control panels, home automation hubs, and embedded sensor networks. Its SPI interface enables fast communication with host MCUs like PIC, AVR, or ARM Cortex devices. The device is also popular in display controllers, keyboard matrix drivers, and relay-switching boards where 8 additional I/O lines are needed.
What are the specifications of MCP23S08-E/P?
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-18 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Qualification Status | Not Qualified |
| uPs/uCs/Peripheral ICs Type | PARALLEL IO PORT, GENERAL PURPOSE |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Thailand |
Where can I find the MCP23S08-E/P datasheet?
MCP23S08-E/P Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP23S08-E/P?
Compatible alternatives and drop-in replacements for MCP23S08-E/P:
suggested
suggested
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suggested
Frequently Asked Questions
What SPI clock speed does the MCP23S08-E/P support, and how does this affect real-time control applications?
The MCP23S08-E/P supports SPI clock speeds up to 10 MHz, making it suitable for real-time industrial control applications where fast I/O updates across 8 pins are required without burdening the host MCU.
How many MCP23S08-E/P devices can share a single SPI bus in a multi-expander design?
Up to 4 MCP23S08-E/P devices can share one SPI bus using the 2-bit hardware address pins (A0, A1), providing a total of 32 additional I/O pins at voltages between 1.8 V and 5.5 V.
Is MCP23S08-E/P a suitable replacement for MCP23008 in board layouts that require SPI instead of I2C?
Yes, the MCP23S08-E/P is pin-compatible in functionality with the MCP23008 I2C variant but uses a 4-wire SPI interface, making it a direct drop-in for designs replacing I2C with SPI at supply voltages from 1.8 V to 5.5 V.
What current drive capability does each I/O pin of MCP23S08-E/P provide for driving LEDs or small loads?
Each I/O pin of the MCP23S08-E/P can source or sink up to 25 mA, allowing direct LED driving or control of small signal transistors without additional buffer circuits in 8-channel output applications.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.2900 | $0.29 |
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