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Maxim Integrated - IO-Link Device Transceiver

Numéro de référence MAX14821
Description IO-Link Device Transceiver
Fabricant Maxim Integrated 
Logo Maxim Integrated 





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MAX14821 fiche technique
MAX14821
IO-Link Device Transceiver
General Description
The MAX14821 transceiver is suitable for IO-Link®
devices and 24V binary sensors/actuators. All specified
IO-Link data rates are supported. In IO-Link applications,
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 configurable
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 device. Extensive alarm conditions are detected
and communicated through the IRQ output and the SPI
interface. The device features reverse-polarity, short-circuit,
and thermal protection. All power lines are monitored for
undervoltage conditions.
The C/Q and DO drivers are specified for sourcing/sinking
up to 100mA.
The device is available in a 2.5mm x 2.5mm, 25-pin wafer-
level package (WLP) and a 4mm x 4mm, 24-pin TQFN
package. Both are specified over the extended -40NC to
+85NC temperature range.
Benefits and Features
● Standards Compliance Ensures Future-Proof Solutions
IO-Link Versions 1.0 and 1.1.2
IEC IEC61131.9 SDCI
● High Configurability and Integration Reduces SKUs
Push-Pull, PNP, or NPN Driver Configuration
Supports COM1, COM2, and COM3 Data Rates
SPI Interface for Control and Monitoring
2.5V to 5V Logic Interface Levels
Auxiliary 24V, 100mA Digital Output (DO)
Auxiliary 24V Digital Input (DI)
100mA Specified C/Q output Drive
Integrated 5V and 3.3V Regulators
● Integrated Protection Enables Robust Solutions
Extensive Fault-Monitoring and Reporting
Reverse-Polarity and Short-Circuit Protection on
All 24V Outputs/Inputs
Reverse-Polarity Protected 24V Supply Output
-40°C to +105°C Operating Temperature Range
● Small Package Supports Sensor Miniaturization
2.5mm x 2.5mm WLP and 4mm x 4mm TQFN
Package
Applications
IO-Link Sensors Industrial Sensors and Actuators
IO-Link Actuators
Typical Operating Circuit
Ordering Information appears at end of data sheet.
5V
3.3V
10k
VCC
GPIO2
SPI
MICROCONTROLLER
IRQ
RX
TX
RTS
GND
GPIO1
0.1µF
0.1µF
1µF
10
VL TXQ LDO33 V5 LDOIN
UV
VP
VCC
WU
RX
TXC
TXEN
LO
MAX14821
DO
DI
C/Q
GND
1µF
0.8
L+
1
2
4
3
L-
IO-Link is a registered trademark of Profibus User Organization (PNO).
SPI is a trademark of Motorola, Inc.
19-5916; Rev 6; 12/15

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