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MAX14820

Description
IO-Link Device Transceiver
File Size960KB,30 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX14820 Overview

IO-Link Device Transceiver

EVALUATION KIT AVAILABLE
MAX14820
IO-Link Device Transceiver
General Description
The MAX14820 transceiver is suitable for IO-Link
®
devices and 24V binary sensors/actuators. All specified
IO-Link data rates are supported. In IO-Link applica-
tions, the transceiver acts as the physical layer interface
to a microcontroller running the data-link layer protocol.
Additional 24V digital inputs and outputs are provided.
Two internal linear regulators generate common sensor
and actuator power requirements: 5V and 3.3V.
On-board C/Q and DO drivers are independently config-
urable for push-pull, high-side (PNP), or low-side (NPN)
operation. The device detects the IO-Link C/Q wake-up
condition and generates a wake-up signal on the active-
low
WU
output. The C/Q and DI inputs have selectable
current loads for use in actuators.
An SPI™ interface allows configuration and monitoring of
the devices. Extensive alarm conditions are detected and
communicated through the
IRQ
output and the SPI inter-
face. The devices feature reverse-polarity, short-circuit,
and thermal protection. All power lines are monitored for
undervoltage conditions.
The C/Q driver is specified for sinking/sourcing 300mA.
The DO driver is specified for sinking/sourcing 135mA.
The device is available in a 4mm x 4mm, 24-pin TQFN
package, and is specified over the extended -40NC to
+85NC temperature range.
Features
S
IO-Link Specification v.1.0 and v.1.1 Physical Layer
Compliant
S
Supports COM1, COM2, and COM3 Data Rates
S
IO-Link Device Wake-up Detection
S
Push-Pull, High-Side, or Low-Side Outputs
S
300mA Specified C/Q Output Drive
S
1µF C/Q and DO Load-Drive Capability
S
Auxiliary 24V, 135mA Digital Output
S
Auxiliary 24V Digital Input
S
Optional 6mA/7mA Current Loads at Both 24V Inputs
S
5V and 3.3V Linear Regulators
S
Reverse-Polarity Protected 24V Supply Output
S
EMI Emission Control Through Slew-Controlled Driver
S
SPI Interface for Configuration and Monitoring
S
2.5V to 5V Logic Interface Levels
S
Reverse-Polarity and Short-Circuit Protection on All
24V Inputs/Outputs
S
High-Temperature Warning and Thermal Shutdown
S
Extensive Fault Monitoring and Reporting
S
-40NC to +85NC Operating Temperature Range
S
4mm x 4mm TQFN Package
Applications
IO-Link Sensors Industrial Sensors and Actuators
IO-Link Actuators
5V
3.3V
Typical Operating Circuit
10Ω
1 F
10kΩ
V
CC
GPIO2
SPI
IRQ
MICROCONTROLLER
RX
TX
RTS
GND
GPIO1
WU
RX
TXC
TXEN
LO
UV
V
L
TXQ LDO33 V
5
0.1 F
1 F
LDOIN V
P
0.8Ω
V
CC
1 F
MAX14820
DO
2
C/Q
GND
3
L-
1
4
L+
DI
IO-Link is a registered trademark of Profibus User Organization (PNO).
SPI is a trademark of Motorola, Inc.
Ordering Information
appears at end of data sheet.
For related parts and recommended products to use with this part, refer to:
www.maximintegrated.com/MAX14820.related
For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
19-5787; Rev 6; 3/14

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