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The CJMCU PCA9548A I2C 8-Channel Multiple Extensions Development Board is a versatile module designed to expand the I2C communication capabilities of microcontrollers. It allows a single I2C master device to communicate with up to eight I2C slave devices, even if they share the same address, by dynamically switching between channels via I2C commands.
Features of CJMCU PCA9548A I2C 8-Channel Multiple Extensions Development Board:
- 1-to-8 Bidirectional Translating Switches enables communication with up to eight I2C devices individually.
- I2C Address is default address is 0x70; can be adjusted to 0x70–0x77 using A0, A1, A2 pins.
- Supports hot insertion that means devices can be connected or disconnected without powering down the system.
- Low standby current for efficient power consumption during idle states.
- 5V Tolerant Inputs: Compatible with both 3.3V and 5V logic levels.
- Active-Low reset Input that allows resetting the multiplexer to its default state.
- Power-Up with all channels deselected which ensures no unintended communication upon startup.
- I2C Bus and SMBus compatible that helps in broad compatibility with various communication protocols.
- Latch-Up performance exceeds 100 mA per JESD 78, Class II which ensures robust operation under various conditions.
Specifications of CJMCU PCA9548A I2C 8-Channel Multiple Extensions Development Board:
- IC: PCA9548A (Texas Instruments)
- Operating Voltage: 2.3V to 5.5V
- Logic Level Compatibility: 3.3V and 5V systems
- Number of Channels: 8 independently controlled I2C channels
- I2C Address: Default 0x70; configurable via A0, A1, A2 pins to addresses 0x70–0x77
- Communication Interface: Standard I2C
- Multiplexed-Side Pins: 8 sets (SD0/SC0 to SD7/SC7) for connecting I2C slave devices
- PCB Material: FR-4
- Mounting: Onboard header pins with mounting holes
Package Includes:
1 × CJMCU PCA9548A I2C 8-Channel Multiple Extensions Development Board
2 × 12-pin male header strips (unsoldered)
Returns Policy
Due to the type of products we sell, we accept limited returns. Below are the conditions where we can accept a return request.
1. Damaged During Shipment
If you receive a product damaged during shipment, please notify us within the 3 days of you receive the product, supported by the proper pictures and description. Once our support team accept the return, we will provide a replacement or a complete refund including the return shipping cost.2. Wrong Item Shipped
If your item looks different from what is shown in the image on our website, we will take the item back and provide a refund or replacement as per your choice.
Limitation of Returns
We don't accept the returns for the products damanged by improper use of the product. Moreover we don't accept the return, if the ordered product is not fit for any specific application. Please read the product specifications and datasheet before selecting and ordering a product. Returns are accepted only with 3 days from the date of delivery.Shipping
We ship to all over India with free shipping on all prepaid orders above 500. For Cash on Delivery orders INR 80 will be charged for orders below INR 599 and INR 30 will be charged for the orders above 599. Please contact to our support team at support@quartzcomponents.com for any question related to shipping.
Please note that the Minimum Order Value is INR 500 for COD orders.