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Name: DS2482S-800+
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS2482S-800+
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Analog Devices Inc./Maxim Integrated DS2482S-800+

Part No.:: DS2482S-800+

Manufacturer:: Analog Devices Inc./Maxim Integrated

Package:: 16-SOIC (0.154, 3.90mm Width)

Datasheet:: DS2482S-800+.pdf

Description:: IC I2C TO 1WIRE BRIDGE 16SOIC

In Stock:: 2901

Quantity:: Add To Cart

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DS2482S-800+ Specifications

Package/Case:
16-SOIC (0.154, 3.90mm Width)
Packaging:
Tube
Series:
-
ProductStatus:
Active
Protocol:
1-Wire®
Function:
Bridge, 1-Wire® to I²C
Interface:
I²C
Standards:
-
Voltage-Supply:
3.3V, 5V
Current-Supply:
750µA
OperatingTemperature:
-40°C ~ 85°C

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DS2482S-800+ information

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DS2482S-800+ Typical application Circuitry

DS2482S-800-

The DS2482S-800+ is a robust, 8-channel 1-Wire master bridge device designed to interface directly with 1-Wire devices to a standard I²C (Inter-Integrated Circuit) bus. Manufactured by Maxim Integrated, this chip simplifies the integration of multiple 1-Wire devices into systems that primarily communicate over I²C, making it highly suitable for applications that require multiple 1-Wire device connections, such as environmental sensing, device authentication, and complex networked systems.

Key Specifications and Features:

- 8-Channel 1-Wire Port: Facilitates the connection of up to eight 1-Wire devices, providing a substantial increase in the scalability of 1-Wire networks.

- I²C to 1-Wire Bridge: Allows I²C-based microcontrollers or processors to communicate with 1-Wire devices, streamlining integration and communication processes.

- Strong Pull-up Feature: Supports devices requiring higher power, such as EEPROMs or thermometers, during 1-Wire operations that necessitate a strong pull-up to supply power.

- Adjustable I²C Timing: Accommodates a wide range of I²C speeds, enhancing compatibility with various host devices.

- Wide Operating Voltage (2.9V to 5.5V): Ensures that the DS2482S-800+ can be used in diverse power environments, broadening its application range.

Application Example: A distributed environmental monitoring system employing multiple temperature and humidity sensors across different locations in a large facility.

Circuit Design Methodology:

1. I²C Interface Connection:

- SDA (Serial Data, Pin 13) and SCL (Serial Clock, Pin 14): These pins are directly connected to the corresponding SDA and SCL pins on the microcontroller. The DS2482S-800+ communicates with the host system via these lines. Including pull-up resistors (typically 4.7kΩ) on both the SDA and SCL lines is crucial to ensure proper I²C communication.

2. 1-Wire Device Connections:

- IO0 to IO7 (Pins 1-8): Each of these pins can be connected to a 1-Wire device or network. Designing a network layout that minimizes signal degradation and interference is essential, especially when extending over longer distances. A common approach involves using a star topology from each IO pin to ensure signal integrity.

3. Power Supply Configuration:

- VDD (Pin 16): This pin is connected to a stable 3.3V or 5V power source, depending on the system's requirements. Capacitive decoupling (typically a 0.1μF capacitor) near the VDD pin is recommended to filter out noise.

- GND (Pin 15): Establish a firm connection to the system's ground plane for optimal device performance and stability.

4. Configuration and Control:

- RSTZ (Reset, Pin 10): Connecting this pin to a GPIO on the microcontroller allows for software reset functionality, enhancing system reliability through the ability to reset the DS2482S-800+ in software.

Design Considerations:

- Network Topology: When connecting multiple 1-Wire devices to the DS2482S-800+, careful planning of the network topology is critical to ensure reliable communication and minimize signal reflections and losses.

- Power Requirements: For 1-Wire devices requiring a strong pull-up for power delivery (e.g., EEPROM programming), ensuring that the DS2482S-800+ is capable of providing adequate power during these operations is essential.

- I²C Bus Capacitance: The total capacitance on the I²C bus, including all connected devices, should not exceed the specifications (400 pF), to maintain proper communication speed and reliability.

- Addressing: The DS2482S-800+ supports multiple I²C addresses, enabling the use of multiple chips on the same I²C bus. Proper address configuration is necessary to avoid conflicts.

Integrating the DS2482S-800+ into a distributed environmental monitoring system demonstrates its capability to efficiently manage multiple 1-Wire devices over a standard I²C interface, showcasing its versatility in applications where extensive sensor networks are essential. This setup highlights the DS2482S-800+'s ability to simplify complex communications, ensuring reliable data collection and system scalability.

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6. What is the process for return or replacement of DS2482S-800+?

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of DS2482S-800+.

(3)The PartNo is unused and only in the original unpacked packaging.

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