MAX14826
General Description
IO-Link Device Transceiver
Benefits and Features
The MAX14826 transceiver is suitable for IO-Link
®
devices and 24V binary sensors. All specified IO-Link
data rates are supported. In IO-Link applications, the
transceiver acts as the physical layer interface to a micro-
controller 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/THSD
output.
The MAX14826 includes a selectable parallel or SPI
interface for configuration and monitoring of the drivers.
Extensive alarm conditions are detected and communi-
cated through the interrupt outputs 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 sinking/sourcing
200mA.
The MAX14826 is available in a 4mm x 4mm, 24-pin
TQFN package, and is specified over the extended -40°C
to +105°C temperature range.
●
IO-Link Specification v.1.0 and v.1.1 Physical Layer
Compliant
●
High Configurability and Integration Reduce SKU’s
• Push-Pull, High-Side, or Low-Side Outputs
• Supports COM1, COM2, and COM3 Data Rates
• SPI or Pin-Driven Control and Monitoring
• 2.5V to 5V Logic Interface Levels
• C/Q and DO Drivers Can Be Connected in Parallel
• Auxiliary 24V, 200mA Digital Output (DO)
• Auxiliary 24V Digital Input (DI)
• Integrated 5V and 3.3V Linear Regulators
•
Driver Currents Specified for 200mA, 100mA
and 50mA
•
1μF C/Q and DO Load Drive Capability
●
Integrated Protection Enables Robust Solutions
• Extensive Fault-Monitoring and Reporting
• Reverse-Polarity and Short-Circuit Protection on All
24V Inputs/Outputs
• Reverse-Polarity Protected 24V Supply Output
• -40°C to +105°C Operating Temperature Range
●
Backwards Pin-and Software-Compatible to
MAX14821
●
Space-Saving 4mm x 4mm TQFN Package
Ordering Information
appears at end of data sheet.
Applications
●
IO-Link Sensors
●
IO-Link Actuators
●
Industrial Sensors and
Actuators
Typical Application Circuit
5V
3.3V
10kΩ
V
CC
V
L
SPI/PAR
GPIO2
SPI
UV
LDO33
V
5
LDOIN
V
P
V
CC
1µF
L+
0.8Ω
1µF
1µF
0.1µF
10Ω
MICROCONTROLLER
IRQ
RX
TX
RTS
WU/THSD
RX
TX
TXEN
LO
MAX14826
DO
2
C/Q
GND
1
3
L-
4
GND
GPIO1
DODIS
DI
IO-Link is a registered trademark of Profibus User Organization (PNO).
19-7129; Rev 0; 9/14
MAX14826
IO-Link Device Transceiver
Functional Diagram
V
L
LDO33
V
5
LDOIN
V
P
SPI/PAR
UV
WU/THSD
IRQ/CQOC
SDO/DOOC
SCLK/CQPP
SDI/DOPP
CS/PNP
STATUS &
CONFIGURATION
3.3V LDO
V
L
UV MONITOR
5V LDO
V
CC
MAX14826
RX
FILTER
V
DRV
WAKE-UP
DETECT
DRIVER
PROTECTION
C/Q
WU
TX
TXEN
GND
LI
DODIS
V
DRV
FILTER
DI
LO
DRIVER
PROTECTION
DO
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MAX14826
IO-Link Device Transceiver
Absolute Maximum Ratings
(All voltages referenced to GND, unless otherwise noted.)
V
CC
.........................................................................-40V to +40V
V
P
(I
VP
< 50mA) ..... the higher of -0.3V and (V
CC
- 1V) to +40V
LDOIN....................................................................-0.3V to +40V
V
5
.................... -0.3V to the lesser of (V
LDOIN
+ 0.3V) and +6V
LDO33 ..................... -0.3V to the lesser of (V
5
+ 0.3V) and +6V
V
L
............................................................................-0.3V to +6V
DI ...........................................................................-40V to +40V
C/Q, DO...................... MIN: the higher of -40V and (V
CC
- 40V)
MAX: the lesser of +40V and (V
CC
+ 40V)
Logic Inputs
TX, TXEN, LO,
CS/PNP,
SDI/DOPP,
SCLK/CQPP ............................................ -0.3V to (V
L
+ 0.3V)
Logic Outputs
RX,
WU
/
THSD,
LI, SDO/DOOC,
IRQ/CQOC...............................................
-0.3V to (V
L
+ 0.3V)
UV ........................................................................-0.3V to +6V
Continuous Current Into Any Logic Pin ...........................
Q50mA
Continuous Power Dissipation
TQFN (derate 27.8mW/°C above +70°C)..................2222mW
Operating Temperature Range ......................... -40°C to +105°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s) ................................. +300°C
Soldering Temperature (reflow) .......................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Package Thermal Characteristics
(Note 1)
TQFN
Junction-to-Ambient Thermal Resistance (θ
JA
)...........36°C/W
Junction-to-Case Thermal Resistance (θ
JC
) .................3°C/W
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
DC Electrical Characteristics
PARAMETER
V
CC
Supply Voltage
V
CC
Supply Current
V
CC
Undervoltage Lockout
Threshold
V
CC
Undervoltage Lockout
Threshold Hysteresis
V
5
Supply Current
V
5
Undervoltage Lockout
Threshold
V
L
Logic-Level Supply Voltage
V
L
Logic-Level Supply Current
V
L
Undervoltage Threshold
(V
CC
= 18V to 36V, V
L
= 2.3V to 5.5V, V
GND
= 0V; all logic inputs at V
L
or GND; T
A
= -40°C to +105°C, unless otherwise noted.
Typical values are at V
CC
= 24V, V
L
= 3.3V, and T
A
= +25°C, unless otherwise noted.) (Note 2)
SYMBOL
V
CC
I
CC
V
CCUVLO
V
CCUVLO_HYST
I
5_IN
V
5UVLO
V
L
I
L
V
LUVLO
All logic inputs at V
L
All logic inputs at GND
V
L
falling
0.65
0.95
LDOIN shorted to V
5
, external 5V
applied to V
5
, no switching, LDO33
disabled
V
5
falling
2.3
CONDITIONS
For driver operation
V
CC
= 24V, C/Q as input, no load on V
5
or LDO33, LDOIN not connected to V
P
,
V
LDOIN
= 24V
V
CC
falling
6
MIN
9
1.2
7.4
200
3
2.4
5.5
5
100
1.30
TYP
MAX
36
2.5
8.4
UNITS
V
mA
V
mV
mA
V
V
µA
µA
V
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MAX14826
IO-Link Device Transceiver
DC Electrical Characteristics (continued)
PARAMETER
5V LDO (V
5
)
LDOIN Input Voltage Range
LDOIN Supply Current
V
5
Output Voltage Range
Power Supply Rejection Ratio
V
LDOIN
I
LDOIN
V
5
V
5PSRR
(V
CC
= 18V to 36V, V
L
= 2.3V to 5.5V, V
GND
= 0V; all logic inputs at V
L
or GND; T
A
= -40°C to +105°C, unless otherwise noted.
Typical values are at V
CC
= 24V, V
L
= 3.3V, and T
A
= +25°C, unless otherwise noted.) (Note 2)
CONDITIONS
MIN
7
V
LDOIN
= 24V, C/Q is configured as an
input, no load on V
5
or LDO33
No load on V
5
, 7V ≤ V
LDOIN
≤ 36V
f
LDOIN
= 100Hz
1mA < I
LOAD
< 10mA, V
LDOIN
= 7V,
0.1µF bypass capacitor on V
5
V
5
Load Regulation
1mA < I
LOAD
< 30mA, V
LDOIN
= 7V,
0.1µF bypass capacitor on V
5,
10Ω–1µF
compensation network added to V
5
V
LDO33
V
LDO33UVLO
No load on LDO33
V
LDO33
falling
1mA < I
LOAD
< 20mA, V
LDOIN
= 7V
I
C/Q
= -200mA
C/Q Driver Output Voltage High
V
OH_C/Q
C/Q high-side
enabled,
9V ≤ V
CC
≤ 36V
I
C/Q
= -100mA
I
C/Q
= -50mA
C/Q Driver Output Voltage Low
C/Q Driver Source Current
Limit
C/Q Driver Sink Current Limit
V
OL_C/Q
I
OH_C/Q
I
OL_C/Q
C/Q low-side
enabled,
9V ≤ V
CC
≤ 36V
I
C/Q
= +200mA
I
C/Q
= +100mA
I
C/Q
= +50mA
+280
-423
V
CC
–
2.1
V
CC
–
1.45
V
CC
–
1.15
V
CC
–
1.9
V
CC
–
1.4
V
CC
–
1.1
3.1
4.75
60
2.5
5.00
88
0.8
%
0.8
TYP
MAX
36
5
5.25
UNITS
V
mA
V
dB
3.3V LDO (LDO33)
LDO33 Output Voltage
LDO33 Undervoltage Lockout
Threshold
LDO33 Load Regulation
24V INTERFACE
V
CC
–
1.4
V
CC
– 1
V
CC
–
0.83
1.55
1.2
0.98
+350
-350
V
CC
–
1.5
1.1
0.87
V
2
1.7
1.3
+420
-280
V
mA
mA
V
3.3
2.4
0.25
3.5
V
V
%
C/Q high-side enabled,
V
C/Q
< (V
CC
- 5V), 9V ≤ V
CC
≤ 36V
C/Q low-side enabled, V
C/Q
> 5V,
9V ≤ V
CC
≤ 36V
I
DO
= -200mA
DO Driver Output Voltage High
V
OH_DO
DO high-side
enabled,
9V ≤ V
CC
≤ 36V
I
DO
= -100mA
I
DO
= -50mA
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MAX14826
IO-Link Device Transceiver
DC Electrical Characteristics (continued)
(V
CC
= 18V to 36V, V
L
= 2.3V to 5.5V, V
GND
= 0V; all logic inputs at V
L
or GND; T
A
= -40°C to +105°C, unless otherwise noted.
Typical values are at V
CC
= 24V, V
L
= 3.3V, and T
A
= +25°C, unless otherwise noted.) (Note 2)
PARAMETER
DO Driver Output Voltage Low
DO Source Current Limit
DO Sink Current Limit
C/Q, DI Input Voltage Range
C/Q Input Threshold High
C/Q Input Threshold Low
C/Q Input Hysteresis
DI Input Threshold High
DI Input Threshold Low
DI Input Hysteresis
C/Q Weak Pulldown Current
DO Leakage Current
DI Weak Pulldown Current
C/Q Input Capacitance
DO Input Capacitance
DI Input Capacitance
V
OL_DO
I
OH_DO
I
OL_DO
V
IN
V
IH_C/Q
V
IL_C/Q
V
HYS_C/Q
V
IH_DI
V
IL_DI
V
HYS_DI
I
PDC/Q
I
PDDO
I
PDDI
C
C/Q
C
DO
C
DI
C/Q driver disabled, V
C/Q
= (V
CC
- 1V)
DO driver disabled, V
CC
= 36V,
V
DO
= (V
CC
- 1V)
V
CC
= 36V, V
DI
= (V
CC
- 1V)
C/Q driver disabled
DO driver disabled
40
40
20
0.3 x
V
L
0.7 x
V
L
Logic input = V
L
TX, TXEN, LO,
CS/PNP,
SDI/DOPP,
SCLK/CQPP, Logic input = GND
-2
-2
100
5
+2
+2
-1
CONDITIONS
DO low-side
enabled,
9V ≤ V
CC
≤ 36V
I
DO
= +200mA
I
DO
= +100mA
I
DO
= +50mA
-470
270
-1.0
10.5
8.0
1.0
6.8
5.2
1
1.6
48
100
+1
102
1.6
8
6.4
MIN
TYP
1.6
1.24
1.04
-340
360
MAX
2.3
1.75
1.4
-263
480
V
CC
+
1.0
13
11.5
mA
mA
V
V
V
V
V
V
V
µA
µA
µA
pF
pF
pF
V
UNITS
DO high-side enabled, V
DO
< (V
CC
- 5V)
DO low-side enabled, V
DO
> 5V
For valid RX, LI
C/Q driver disabled
C/Q driver disabled
C/Q driver disabled
LOGIC INPUTS (TX, TXEN, LO,
CS/PNP,
SDI/DOPP, SCLK/CQPP, SPI/PAR,
DODIS)
Logic-Input Voltage Low
Logic-Input Voltage High
Logic-Input Leakage Current
High
Logic-Input Leakage Current
Low
SPI/
PAR
Pull-Up Resistance
Logic-Input Capacitance
V
IL
V
IH
I
LEAK_H
I
LEAK_L
R
PUSPI
C
IN
V
V
µA
µA
kΩ
pF
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