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PCA9518PWR
Interface - I/O Expanders Expandable 5-Ch I2C Hub
PCA9518PWR
Interface - I/O Expanders Expandable 5-Ch I2C Hub
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Manufacturer Part # : PCA9518PWR
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Package/Case: TSSOP-20
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Brand: Texas Instruments
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Product Categories : Specialized
Quality Assurance
Quality Assurance
All parts procured from our supply chain network undergo a rigorous incoming inspection process. This meticulous inspection ensures that the parts received by our customers are authentic and meet the required standards. Additionally, we maintain detailed records of these inspections to ensure transparency and traceability throughout the supply chain.
Certification
We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.
Shipping & Payment
Shipping & Payment
About Shipping
We generally ship orders within a few business days through reliable shipping carriers such as FedEx, SF, UPS, or DHL. We also have support for other shipping methods. If you would like to inquire about specific shipping details or costs, please don't hesitate to reach out to us.
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If you have a specific payment method in mind or would like to inquire about rates and other details, please feel free to contact us.
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
Confirm the return or exchange with our staff.
Maintain the goods in their original condition as received.
Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]
About packaging
Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.
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PCA9518PWR DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
With its 3-V to 3.6-V VCC operation and 5-V tolerant I2C input pins, the PCA9518PWR offers flexibility in voltage translation between master and slave devices. The inclusion of an enable pin facilitates electrical isolation of repeater segments, a useful feature for optimizing system speed and performance. Additionally, the internal buffers of the PCA9518PWR maintain proper signal levels to prevent lockup conditions during operation
Key Features
- Multiple Master Support
- Fault-Tolerant Bus Operation
- Data Transfer Rates up to 400 kHz
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Features | Reset pin | Frequency (max) (MHz) | 0.4 |
| VCCA (min) (V) | 3 | VCCA (max) (V) | 3.6 |
| VCCB (min) (V) | 3 | VCCB (max) (V) | 3.6 |
| Supply restrictions | VCC Single Supply | Rating | Catalog |
| Operating temperature range (°C) | -40 to 85 |
FAQs
What is PCA9518PWR?
The PCA9518PWR is an I2C bus buffer with an on-board level shifter designed by Texas Instruments. It is ideal for applications requiring I2C signal buffering and voltage level translation, such as mixed-voltage level I2C communication, hot-swappable I2C buses, and I2C bus extension.
How Does PCA9518PWR Work?
The PCA9518PWR works by buffering and translating I2C signals between devices with different voltage levels. It allows devices operating at different voltage levels to communicate on the same I2C bus by level shifting the signals, thus ensuring proper data transfer and preventing bus contention. The device features a bidirectional voltage-level translation with automatic direction sensing, simplifying mixed-voltage-level I2C bus designs.
How Many Pins does PCA9518PWR have and What are the Functions of the Pinout Configuration?
The PCA9518PWR is housed in a 8-lead TSSOP (Thin Shrink Small Outline Package) package. The pinout configuration includes:
- EN: Enable input pin for power management.
- Y0, Y1: I2C-bus buffer I/O pins for Port 0.
- A0, A1: I2C-bus buffer I/O pins for Port 1.
- GND: Ground pin.
- VREF1, VREF2: Reference voltage pins for level shifting.
What are the Pros and Cons of PCA9518PWR?
Pros:
- Voltage Level Translation: Enables communication between devices with different voltage levels on the same I2C bus.
- Automatic Direction Sensing: Simplifies system design by automatically sensing the direction of data flow for bidirectional level shifting.
- Hot Swappable Capability: Supports hot-swappable I2C buses, allowing for dynamic system reconfiguration without disruption.
- Low Standby Current: Consumes low standby current, suitable for power-sensitive applications.
- Small Package: The 8-lead TSSOP package is space-efficient, suitable for compact designs.
Cons:
- Complexity: May require careful consideration of pull-up resistor values and bus capacitance for proper operation in the system.
Are There Any Equivalents/Alternatives to PCA9518PWR for Recommendation?
- The PCA9306 from Texas Instruments is a similar I2C bus buffer with dual voltage-level translation.
- Alternative devices to the PCA9518PWR include the AN97055 from ON Semiconductor and the PI4TCT2084 from Pericom.
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