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Name: LTM2881IY-3#PBF
Brand: Analog Devices Inc.
SKU: LTM2881IY-3#PBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Analog Devices Inc. LTM2881IY-3#PBF

Part No.:: LTM2881IY-3#PBF

Manufacturer:: Analog Devices Inc.

Package:: 32-BBGA Module

Datasheet:: LTM2881IY-3#PBF.pdf

Description:: DGTL ISO 2.5KV RS422/RS485 32BGA

In Stock:: 2988

Quantity:: Add To Cart

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LTM2881IY-3#PBF Specifications

Packaging:
Tray
Series:
µModule®
ProductStatus:
Active
Technology:
Magnetic Coupling
Type:
RS422, RS485
IsolatedPower:
Yes
NumberofChannels:
2
Inputs-Side1/Side2:
1/1
ChannelType:
Unidirectional
Voltage-Isolation:
2500Vrms
CommonModeTransientImmunity(Min):
30kV/µs
DataRate:
20Mbps
PropagationDelaytpLH/tpHL(Max):
-
PulseWidthDistortion(Max):
-
Rise/FallTime(Typ):
-
Voltage-Supply:
3V ~ 3.6V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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LTM2881IY-3#PBF information

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LTM2881IY-3#PBF Typical application Circuitry

LTM2881IY-3 PBF

LTM2881IY-3#PBF is a galvanically isolated RS485/RS422 transceiver chip designed for robust and noise-immune communication in industrial and automotive applications.

Application Scenarios: LTM2881IY-3#PBF is commonly used in applications that require long-range communication, noise immunity, and isolation, such as industrial automation, motor control, smart grid systems, and automotive electronics. It enables reliable data transmission in harsh electrical environments, ensuring the integrity of communication signals.

Main Parameters: LTM2881IY-3#PBF features a high level of isolation between the RS485/RS422 interface and the logic interface, providing protection against ground loops, voltage spikes, and electromagnetic interference. It supports a wide range of data rates and offers industry-standard RS485/RS422 signal levels for compatibility with various communication systems. The chip offers dependable data transfer over great distances while operating with little power usage.

Circuit Connection: Let's consider an example circuit using LTM2881IY-3#PBF for galvanic isolation and communication between two nodes:

1. Node 1 (Transmitting Side):

- Connect the VCC1 pin of LTM2881IY-3#PBF to the power supply voltage (5V, for example).

- Connect the GND1 pin of LTM2881IY-3#PBF to the ground reference of Node1.

- Connect the RO1 (RS485/RS422 Output) pin of LTM2881IY-3#PBF to the TXD (Transmit Data) pin of the microcontroller or communication controller in Node1.

- Connect the DI (Data Input) pin of LTM2881IY-3#PBF to the data signal generated by Node 1.

- Connect the RE (Receiver Enable) and DE (Driver Enable) pins of LTM2881IY-3#PBF to the corresponding control signals from the microcontroller or communication controller in Node 1.

2. Node 2 (Receiving Side):

- Connect the VCC2 pin of LTM2881IY-3#PBF to the power supply voltage (5V, for example).

- Connect the GND2 pin of LTM2881IY-3#PBF to the ground reference of Node 2.

- Connect the RI1 (RS485/RS422 Input) pin of LTM2881IY-3#PBF to the RXD (Receive Data) pin of the microcontroller or communication controller in Node 2.

- Connect the RO2 (RS485/RS422 Output) pin of LTM2881IY-3#PBF to the data signal received by Node 2.

- Connect the RE (Receiver Enable) and DE (Driver Enable) pins of LTM2881IY-3#PBF to the corresponding control signals from the microcontroller or communication controller in Node 2.

3. Galvanic Isolation:

- Connect the ISO1 and ISO2 pins of LTM2881IY-3#PBF to provide galvanic isolation between Node 1 and Node 2. These pins should be connected to the isolated power supply or an isolated DC-DC converter.

4. Termination Resistors:

- Install termination resistors (120 ohms, for example) across the A and B lines of the RS485/RS422 communication bus at both ends to improve signal integrity and minimize reflections.

Design Considerations: When designing a circuit with LTM2881IY-3#PBF, consider the following:

1. Isolation Voltage: Ensure that the isolation voltage rating of LTM2881IY-3#PBF meets the requirements of your application to provide sufficient isolation protection.

2. Communication Speed: Select an appropriate data rate for your application and ensure that LTM2881IY-3#PBF supports the desired data rate.

3. Bus Termination: Properly terminate the RS485/RS422 communication bus with termination resistors to prevent signal reflections and maintain signal integrity.

4. Grounding and Noise Immunity: Pay attention to proper grounding techniques and noise immunity measures to minimize ground loops and electromagnetic interference.

In summary, LTM2881IY-3#PBF is a galvanically isolated RS485/RS422 transceiver chip used for robust and noise-immune communication. When designing a circuit with LTM2881IY-3#PBF, considerations should be given to isolation voltage, communication speed, bus termination, and grounding for reliable and secure data transmission.

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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.

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