CH423S I2C to GPIO Expander IC SOP-28
Prices updated: 13 Oct 2026
Compare prices
| Store | product | Price | View in store |
|---|---|---|---|
 UGE | I2C to GPIO IO Expander Controller CH423S SOP28 | 60 EGP | View in store |
Price history
Lowest daily price, last 90 days
Lowest price recorded: 60 EGP
About this product
The CH423S is a two-wire I2C GPIO expander that adds 8 bidirectional I/O pins and 16 output-only pins to a microcontroller. It has built-in LED current drive that can statically drive 24 LEDs or dynamically drive 128 LEDs, and supports an input level change interrupt.
Specifications
- Interface
- I2C (two-wire serial) / I2C (سلكان تسلسليان)
- GPIO
- 8 bidirectional I/O + 16 output-only / 8 ثنائية الاتجاه + 16 للإخراج فقط
- LED drive
- 24 LEDs static / 128 LEDs dynamic / 24 بشكل ثابت / 128 بالتعدد الزمني
- Package
- SOP-28
Frequently asked questions
What is the price of CH423S I2C to GPIO Expander IC SOP-28 in Egypt?
CH423S I2C to GPIO Expander IC SOP-28 currently costs 60 EGP in Egypt.
Where can I buy CH423S I2C to GPIO Expander IC SOP-28 in Egypt?
CH423S I2C to GPIO Expander IC SOP-28 is available from UGE. Compare the offers above to find the best price.
How do I connect the CH423S to an Arduino or ESP32?
Connect the SDA and SCL lines to the microcontroller's I2C pins, along with VCC and GND. I2C lines normally need pull-up resistors, so check the datasheet for the recommended value and supply voltage.
Does it replace GPIO pins for buttons and LEDs?
Yes, it adds extra inputs and outputs over the two I2C lines, which frees the microcontroller's own pins. Reads and writes happen over I2C, so update speed is lower than with native pins.
