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Name: ST3485EBDR
Brand: STMicroelectronics
SKU: ST3485EBDR
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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STMicroelectronics ST3485EBDR

Part No.:: ST3485EBDR

Manufacturer:: STMicroelectronics

Package:: 8-SOIC (0.154, 3.90mm Width)

Datasheet:: ST3485EBDR.pdf

Description:: IC TRANSCEIVER HALF 1/1 8SO

In Stock:: 3473

Quantity:: Add To Cart

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ST3485EBDR Specifications

Package/Case:
8-SOIC (0.154, 3.90mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
Type:
Transceiver
Protocol:
RS422, RS485
NumberofDrivers/Receivers:
1/1
Duplex:
Half
ReceiverHysteresis:
70 mV
DataRate:
15Mbps
Voltage-Supply:
3V ~ 3.6V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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ST3485EBDR information

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ST3485EBDR Typical application Circuitry

ST3485EBDR

The ST3485EBDR is a multi-channel RS-485/RS-422 transceiver IC designed for robust serial communication over long distances in industrial and automotive applications. It offers differential signaling and ESD (Electrostatic Discharge) protection, making it suitable for various industrial communication scenarios.

Key Features of ST3485EBDR:

1. RS-485/RS-422 Compatibility: The ST3485EBDR is compatible with both RS-485 and RS-422 communication standards.

2. Differential Signaling: It utilizes differential signaling to improve noise immunity and signal integrity in noisy industrial environments.

3. Wide Voltage Range: The transceiver can operate over a wide supply voltage range, typically from 3.0V to 5.5V.

4. Multiple Channels: It often features multiple channels, allowing for multiple communication links.

5. ESD Protection: The IC is designed with built-in protection against Electrostatic Discharge events, enhancing its ruggedness.

6. Driver Enable Function: Some models offer a driver enable function, allowing you to control the transmission of data.

7. Short-Circuit and Overload Protection: It may provide short-circuit and overload protection for robust operation.

Example Application: RS-485 Network

Let's consider a common application scenario for the ST3485EBDR: building an RS-485 network for data communication between multiple industrial devices in a factory.

Circuit Connection:

1. ST3485EBDR Pin 1 (DI, A-): Connect this pin to the A- (negative) line of the RS-485 network.

2. ST3485EBDR Pin 2 (RO, A+): Connect this pin to the A+ (positive) line of the RS-485 network.

3. ST3485EBDR Pin 3 (RE, /RE): Connect this pin to the Receive Enable (RE) control line. This pin is active low (/RE).

4. ST3485EBDR Pin 4 (DE, /DE): Connect this pin to the Driver Enable (DE) control line. This pin is active low (/DE).

5. ST3485EBDR Pin 5 (DI, B-): Connect this pin to the B- (negative) line of the RS-485 network.

6. ST3485EBDR Pin 6 (RO, B+): Connect this pin to the B+ (positive) line of the RS-485 network.

7. ST3485EBDR Pin 7 (VCC): Connect this pin to the supply voltage (VCC), typically 3.3V or 5V.

8. ST3485EBDR Pin 8 (GND): Connect this pin to the ground reference (GND) of your circuit.

Design Considerations:

1. Termination: Implement proper termination resistors at the ends of the RS-485 network to reduce signal reflections.

2. Baud Rate and Data Format: Ensure that all devices on the network communicate at the same baud rate and use the same data format.

3. Bus Length: Consider the maximum cable length and number of devices on the network to maintain signal integrity.

4. RE and DE Control: Control the RE and DE pins appropriately to enable receive or transmit modes when sending or receiving data.

5. Noise Immunity: Implement noise-reduction techniques like twisted-pair cabling and filtering to improve communication reliability.

6. ESD Protection: Ensure that the network is adequately protected against electrostatic discharge events.

7. Grounding: Pay attention to grounding to minimize ground potential differences between devices.

8. Diagnostic Features: Some transceivers offer diagnostic features that can help troubleshoot communication issues.

In summary, the ST3485EBDR is a versatile RS-485/RS-422 transceiver used for reliable serial communication in industrial environments. When designing a circuit with this transceiver, it is crucial to address termination, baud rate, bus length, RE and DE control, noise immunity, ESD protection, grounding, and diagnostic features to ensure robust and dependable data communication in your specific industrial application.

ST3485EBDR FAQ

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6. What is the process for return or replacement of ST3485EBDR?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the ST3485EBDR we delivered, we will accept the replacement or return of the ST3485EBDR only when all of the below conditions are fulfilled:

(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 ST3485EBDR.

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

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations