Mfr Part #:

LTC4331CUFD#PBF

Mfr Name: Analog Devices / Maxim Integrated

The Analog Devices LTC4331CUFD#PBF is an I2C slave device extender designed for rugged differential links in industrial environments. It supports up to 1MHz operation and extends I2C buses up to 1200m.

✓ Total Stock: 112 pcs

$ Price Range: $0.75

LTC4331CUFD#PBF Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Braun Electronic Components ✓ Non-Authorised Inventory information	112 pcs On Request	112 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

LTC4331CUFD#PBF Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	Specialized ICs
Manufacturer Name	Analog Devices / Maxim Integrated
Applications	Industrial, Lighting
Mounting Type	Surface Mount
Operating Voltage	3V to 5.5V
Supplier Device Package	20-QFN (4x5)
Supplier Package	20-WFQFN Exposed Pad
Type	Differential Link

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LTC4331CUFD#PBF Description

Short technical summary and product information.

The LTC4331CUFD#PBF from Analog Devices is a point-to-point SMBus compatible I2C slave device extender engineered for high noise industrial settings. Utilizing a ±60V fault-protected differential transceiver, it extends I2C/SMBus buses, including SMBALERT and a control signal, over a single twisted pair differential link up to 1200 meters.

This device operates at serial clock frequencies up to 1MHz (Fast-mode Plus) and offers selectable link baud rates. It provides tolerance to large ground differences between nodes due to its extended common mode operating range of ±15V. For EMI-sensitive applications, a slew rate control pin is available to reduce emitted EMI.

The LTC4331 can also function as an I2C to I2C bridge, enabling independent bus frequencies between local and remote networks. It is transparent to the master in most cases, requiring no additional code, though a control interface is provided for configuration and fault monitoring. The device is available in a 20-Lead QFN (4x5mm) package and is surface-mountable.

Key features include ±40kV ESD protection on link pins, IEC Level 4 ESD protection (±8kV), and EFT protection (±5kV). It operates with a 3V to 5.5V supply voltage and a 1.62V to 5.5V logic supply.

LTC4331CUFD#PBF Quick Information

Product Type: Specialized IC

Canonical Name: LTC4331CUFD#PBF I2C Slave Device Extender Over Rugged Differential Link

Subcategory: Differential Link

LTC4331CUFD#PBF Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

LTC4331CUFD#PBF Estimated Pricing

Qty	Low	High
1+	$0.75	$0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

LTC4331CUFD#PBF Features

Extends I2C/SMBus over differential link.
Supports up to 1200m link distance.
Operates at 1MHz Fast-mode Plus.
±60V fault protection on link.
±15V extended common mode range.

LTC4331CUFD#PBF Applications

Industrial control and sensors.
Lighting and sound system control.
High noise environments.
Long distance communication.

LTC4331CUFD#PBF FAQs

6 frequently asked questions generated from this part’s specifications.

What is the supply voltage range for the LTC4331CUFD#PBF?

The supply voltage range is 3V to 5.5V, and the logic supply voltage range is 1.62V to 5.5V.

What is the maximum serial clock frequency?

Up to 1MHz in Fast-mode Plus.

What is the maximum link distance?

Up to 1200 meters.

What overvoltage protection does the device provide?

±60V overvoltage protection on link pins for line faults.

What ESD protection is available?

±40kV on link pins, ±8kV IEC level 4, and ±5kV EFT protection.

What is the package type?

20-QFN (4x5) with exposed pad, surface mount.