MCP23017T E/SO Microchip-1.8 V to 5.5 V 16-bit Expander IC - SOP-28 Package

MCP23017T-E/SO 1.8V ~ 5.5V 16-Bit I/O Expander IC - SOP-28 Package is a 16-bit General-Purpose Input/Output (GPIO) expander that communicates through an I²C interface, allowing microcontrollers to add up to 16 programmable digital I/O pins using only two communication lines. Operating from 1.8V to 5.5V, it features configurable interrupts, internal pull-up resistors, polarity inversion, and hardware addressing, making it an excellent choice for Arduino, ESP32, Raspberry Pi, STM32, industrial automation, and embedded control applications.

MCP23017T E/SO 1.8 V~ 5.5 V 16-bit Expander IC - SOP-28 Package Datasheet

Features:

1. 16-Bit General Purpose I/O Expander
2. High-Speed I²C Serial Interface
3. Wide 1.8V to 5.5V Operating Voltage
4. 16 Individually Configurable GPIO Pins
5. Two 8-Bit I/O Ports (GPIOA & GPIOB)
6. Configurable Input or Output Direction
7. Internal Weak Pull-Up Resistors
8. Interrupt-on-Change Functionality
9. Dual Interrupt Outputs (INTA & INTB)
10. Input Polarity Inversion Register
11. Supports Up to 8 Devices on One I²C Bus
12. External Hardware Reset Pin
13. Low Standby Current
14. Fast Data Transfer up to 1.7MHz
15. CMOS Compatible Inputs and Outputs
16. Industrial Temperature Range
17. RoHS Compliant

Specifications:

Parameter	Value
Product Type	16-Bit GPIO Expander IC
Part Number	MCP23017T-E/SO
Package	SOP-28 (Wide)
Interface	I²C
Supply Voltage	1.8V ~ 5.5V
GPIO Pins	16
Port Configuration	2 × 8-Bit Ports
I²C Clock Speed	100kHz / 400kHz / 1.7MHz
Address Pins	A0, A1, A2
Maximum Devices on Bus	8
Interrupt Outputs	INTA & INTB
Internal Pull-Up Resistors	Yes
Input Polarity Inversion	Yes
Hardware Reset	Yes
Output Latch	Yes
Standby Current	1µA (Max.)
Operating Temperature	-40°C to +85°C
Mounting Type	Surface Mount
RoHS Compliance	Yes

Pin Configuration:

Pin	Name	Description
1	GPA0	GPIO Port A Bit 0
2	GPA1	GPIO Port A Bit 1
3	GPA2	GPIO Port A Bit 2
4	GPA3	GPIO Port A Bit 3
5	GPA4	GPIO Port A Bit 4
6	GPA5	GPIO Port A Bit 5
7	GPA6	GPIO Port A Bit 6
8	GPA7	GPIO Port A Bit 7
9	VSS	Ground
10	A0	I²C Address Select
11	A1	I²C Address Select
12	A2	I²C Address Select
13	RESET	Hardware Reset
14	INTB	Interrupt Output B
15	INTA	Interrupt Output A
16	SDA	I²C Data
17	SCL	I²C Clock
18	VDD	Supply Voltage
19	GPB0	GPIO Port B Bit 0
20	GPB1	GPIO Port B Bit 1
21	GPB2	GPIO Port B Bit 2
22	GPB3	GPIO Port B Bit 3
23	GPB4	GPIO Port B Bit 4
24	GPB5	GPIO Port B Bit 5
25	GPB6	GPIO Port B Bit 6
26	GPB7	GPIO Port B Bit 7
27	NC	No Connection
28	NC	No Connection

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Package Includes:

1 x MCP23017T-E/SO 1.8V ~ 5.5V 16-Bit I/O Expander IC - SOP-28 Package