LTC2874 - Quad IO-Link Master Hot Swap Controller and PHY

The LTC®2874 provides a rugged, 4-port IO-Link power and communications interface to remote devices connected by cables up to 20m in length.

Output supply voltage and inrush current are ramped up in a controlled manner using external N-channel MOSFETs, providing improved robustness compared to fully integrated solutions.

Wake-up pulse generation, line noise suppression, connection sensing and automatic restart after fault conditions are supported, along with signaling at 4.8kb/s, 38.4kb/s, and 230.4kb/s.

Configuration and fault reporting are exchanged using a SPI-compatible 4-wire interface that operates at clock rates up to 20MHz.

The LTC2874 implements an IO-Link master PHY. For IO-Link device designs, see the LT®3669.

Features

IO-Link® Compatible (COM1/COM2/COM3)
8V to 34V Operation
Hot Swap™ Controller Protected Supply Outputs
Discrete Power MOSFETs for Ruggedness and Flexibility
Configurable 100mA (4-Port), 200mA (2-Port), or 400mA (1-Port) CQ Drive Capability
Automatic Wake-Up Pulse Generation
Automatic Cable Sensing
CQ Pins Protected to ±50V
Configurable L+ Current Limit with Foldback
Short Circuit, Input UV/OV and Thermal Protection
Optional Interrupt and Auto-Retry after Faults
2.9V to 5.5V Logic Supply for Flexible Digital Interface
No Damage or Latchup to ±8kV HBM ESD
38-Lead (5mm × 7mm) QFN and TSSOP Packages

Typical Application

Applications

IO-Link Masters
Intelligent Sensors and Actuators
Factory Automation Networks

Packaging

**Order Information**
Part Number	Package	Temp	Price(1-99)	Price (1k)*
LTC2874IFE#PBF	TSSOP-38	I	$11.79	$8.25
LTC2874IFE#TRPBF	TSSOP-38	I	$11.85	$8.31
LTC2874IUHF#PBF	5x7 QFN-38	I	$11.34	$7.94
LTC2874IUHF#TRPBF	5x7 QFN-38	I	$11.40	$8.00

Demo Boards


Part Number	Description	Price
DC1880A	LTC2874 Demo Board \| Quad IO-Link Master Hot Swap Power Controller and PHY (req. DC2026)	$125.00
DC2228A	8-Port IO-Link Master Reference Design. Includes LTC2874, LT4275A, IO-Link v1.1 Protocol Stack and Control Tool. Optionally powered by DC1814A-D PoE supply.	$599.00

**Companion Boards**
Part Number	Description	Price
DC2026C	Linduino One Isolated USB Demo Board: An Arduino- and QuikEval-Compatible Code Development Platform	$75.00
DC590B	Isolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards	$50.00
DC1814A-D	LTC4274A-4 Demo Board \| LTPoE++ (90W) PSE	$100.00
DC2227A	LT3669-2 Demo Board \| I/O Link with 18V to 36V Input to 4V at 300mA and 3.3V at 150mA	$299.00