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PDF MAX14826 Data sheet ( Hoja de datos )
| Número de pieza | MAX14826 | |
| Descripción | IO-Link Device Transceiver | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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MAX14826
IO-Link Device Transceiver
General Description
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
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/THSD output.
The MAX14826 includes a selectable parallel or SPI
interface for configuration and monitoring of the drivers.
Extensive alarm conditions are detected and communicated
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.
Applications
●● IO-Link Sensors
●● IO-Link Actuators
●● Industrial Sensors and
Actuators
Typical Application Circuit
Benefits and Features
●● 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.
5V
3.3V
10kΩ
VCC
GPIO2
SPI
MICROCONTROLLER IRQ
RX
TX
RTS
GND GPIO1
VL
SPI/PAR
UV
WU/THSD
RX
TX
TXEN
LO
1µF 0.1µF
1µF
10Ω
LDO33
V5
LDOIN
VP
VCC
MAX14826
DODIS DI
DO
C/Q
GND
0.8Ω
1µF
L+
1
2
4
3
L-
IO-Link is a registered trademark of Profibus User Organization (PNO).
19-7129; Rev 1; 4/16
1 page  
MAX14826
IO-Link Device Transceiver
DC Electrical Characteristics (continued)
(VCC = 18V to 36V, VL = 2.3V to 5.5V, VGND = 0V; all logic inputs at VL or GND; TA = -40°C to +105°C, unless otherwise noted.
Typical values are at VCC = 24V, VL = 3.3V, and TA = +25°C, unless otherwise noted.) (Note 2)
PARAMETER
DO Driver Output Voltage Low
DO Source Current Limit
DO Sink Current Limit
VOL_DO
IOH_DO
IOL_DO
CONDITIONS
DO low-side
enabled,
9V ≤ VCC ≤ 36V
IDO = +200mA
IDO = +100mA
IDO = +50mA
DO high-side enabled, VDO < (VCC - 5V)
DO low-side enabled, VDO > 5V
MIN
-470
270
TYP
1.6
1.24
1.04
-340
360
C/Q, DI Input Voltage Range
VIN For valid RX, LI
-1.0
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
VIH_C/Q
VIL_C/Q
VHYS_C/Q
VIH_DI
VIL_DI
VHYS_DI
IPDC/Q
C/Q driver disabled
C/Q driver disabled
C/Q driver disabled
C/Q driver disabled, VC/Q = (VCC - 1V)
DO Leakage Current
IPDDO
DO driver disabled, VCC = 36V,
VDO = (VCC - 1V)
DI Weak Pulldown Current
IPDDI
VCC = 36V, VDI = (VCC - 1V)
C/Q Input Capacitance
CC/Q
C/Q driver disabled
DO Input Capacitance
CDO
DO driver disabled
DI Input Capacitance
CDI
LOGIC INPUTS (TX, TXEN, LO, CS/PNP, SDI/DOPP, SCLK/CQPP, SPI/PAR, DODIS)
Logic-Input Voltage Low
VIL
10.5
8.0
1.0
6.8
5.2
1
-1
0.3 x
VL
1.6
1.6
48
40
40
20
Logic-Input Voltage High
VIH
Logic-Input Leakage Current
High
Logic-Input Leakage Current
Low
SPI/ PAR Pull-Up Resistance
Logic-Input Capacitance
ILEAK_H
ILEAK_L
RPUSPI
CIN
Logic input = VL
TX, TXEN, LO, CS/PNP, SDI/DOPP,
SCLK/CQPP, Logic input = GND
-2
-2
100
5
MAX
2.3
1.75
1.4
-263
480
VCC +
1.0
13
11.5
8
6.4
100
UNITS
V
mA
mA
V
V
V
V
V
V
V
µA
+1 µA
102 µA
pF
pF
pF
0.7 x
VL
+2
+2
V
V
µA
µA
kΩ
pF
www.maximintegrated.com
Maxim Integrated │ 5
5 Page 
MAX14826
IO-Link Device Transceiver
TXEN
TX WU/THSD
MAX14826
C/Q
GND
TXEN
TX
C/Q
WU/THSD
< tWUMIN
NO WAKE-UP
tWUMIN < tWU < tWUMAX
tWUL
NOTE: THE MAX14826 RECOGNIZES A WAKE-UP PULSE WHEN C/Q IS SHORTED FROM HIGH-TO-LOW OR FROM LOW-TO-HIGH FOR tWUMIN < tWU < tWUMAX.
Figure 5. Wake-Up Detection Timing
CS/PNP
SCLK/CQPP
SDI/DOPP
tCSS
tCSH
tDS
tDH
tCH
tCL
SDO/DOOC
Figure 6. SPI Timing Diagram
www.maximintegrated.com
tCSH
tDO
Maxim Integrated │ 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAX14826.PDF ] | |
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