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PDF MAX14820 Data sheet ( Hoja de datos )

Número de pieza MAX14820
Descripción IO-Link Device Transceiver
Fabricantes Maxim Integrated 
Logotipo Maxim Integrated Logotipo



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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.
Applications
IO-Link Sensors Industrial Sensors and Actuators
IO-Link Actuators
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
Typical Operating Circuit
5V
3.3V
10k
VCC
GPIO2
SPI
IRQ
MICROCONTROLLER RX
TX
RTS
GPIO1
GND
1μF 0.1μF
10
1μF
UV VL TXQ LDO33 V5
LDOIN VP VCC
WU MAX14820 DO
RX
TXC C/Q
TXEN
LO DI GND
0.8
1μF
L+
1
2
34
L-
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

1 page




MAX14820 pdf
MAX14820
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 = -40NC to +85NC, unless otherwise noted. Typical
values are at VCC = 24V, VL = 3.3V, and TA = +25NC, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
DO Weak Pulldown Current
IPDDO
DO driver disabled, VCC = 36V,
VDO = (VCC - 1V)
DI Weak Pulldown Current
IPDDI
DI load disabled, VCC = 36V,
VDI = (VCC - 1V)
C/Q Input Capacitance
DO Input Capacitance
DI Input Capacitance
C/Q, DI CURRENT SINK
CC/Q
CDO
CDI
C/Q driver disabled
DO driver disabled
C/Q Load Current
DI Load Current
ILLM_C/Q
ILLM_DI
C/Q load enabled
(C/QLoad = 1)
DI load enabled
(DiLoad = 1)
0V P VC/Q P 5V
5V P VC/Q
0V P VDI P 5V
9V P VDI
LOGIC INPUTS (TXC, TXQ, TXEN, LO, CS, SDI, SCLK)
Logic-Input Voltage Low
VIL
Logic -Input Voltage High
VIH
Logic-Input Leakage Current
Logic-Input Capacitance
ILEAK
CIN
Logic input = GND or VL
LOGIC OUTPUTS (RX, WU, LI, UV, SDO, IRQ)
Logic-Output Voltage Low
VOL IOUT = -5mA
Logic-Output Voltage High
VOHRX,
VOHWU, VOHLI,
VOHSDO,
VOHIRQ,
IOUT = 5mA (Note 3)
SDO Leakage Current
THERMAL SHUTDOWN
ILK_SDO
SDO disabled, SDO = GND or VL
Thermal Warning Threshold
Die temperature rising, OTemp bit is set
Thermal Warning Threshold
Hysteresis
Die temperature falling, OTemp bit is
cleared
Thermal Shutdown Threshold
Die temperature rising
Thermal Shutdown Hysteresis
MIN
40
50
0
5
0
6
0.3 x
VL
-1
VL -
0.6
-1
TYP
40
40
20
7.5
5
+115
20
+150
20
MAX
120
300
9
9
9
9
0.7 x
VL
+1
0.4
+1
UNITS
FA
FA
pF
pF
pF
mA
mA
V
V
FA
pF
V
V
FA
NC
NC
NC
NC
Maxim Integrated
  5

5 Page





MAX14820 arduino
MAX14820
IO-Link Device Transceiver
Typical Operating Characteristics
(VCC = 24V, LDOIN = VP, VL = LDO33, C/Q and DO in push-pull configuration, TA = +25NC, unless otherwise noted.)
C/Q DRIVER-OUTPUT HIGH
vs. LOAD CURRENT
25
TA = +25°C
24 TA = +85°C
C/Q DRIVER-OUTPUT LOW
vs. SINK CURRENT
7
TXEN = VL
6 TXC = TXQ = VL
23
22
TA = -40°C
21
20
5
TA = +85°C
4
TA = +25°C
3 TA = -40°C
2
19 TXEN = VL
TXC = TXQ = GND
18
0 50 100 150 200 250 300 350 400
LOAD CURRENT (mA)
DO DRIVER-OUTPUT HIGH
vs. LOAD CURRENT
25
TA = +85°C
24 TA = +25°C
23
22 TA = -40°C
21
20
DO DRIVER IS ENABLED
LO = GND
19
0 50 100 150
200
LOAD CURRENT (mA)
250
C/Q DRIVER PROPAGATION DELAY
vs. TEMPERATURE (HiSlew = 0)
1.30
1.28
1.26
1.24
1.22
1.20
1.18
1.16
1.14
1.12 TXEN = VL
TXC = TXQ
1.10
-45 -30 -15 0 15 30 45 60 75 90
TEMPERATURE (°C)
1
0
0 50 100 150 200 250 300 350 400
SINK CURRENT (mA)
DO DRIVER-OUTPUT LOW
vs. SINK CURRENT
7
DO DRIVER IS ENABLED
6 LO = VL
5
4 TA = +85°C
3 TA = +25°C
TA = -40°C
2
1
0
0 50 100 150 200 250
SINK CURRENT (mA)
C/Q DRIVER PROPAGATION DELAY
vs. TEMPERATURE (HiSlew = 1)
0.46
0.45
0.44
0.43
0.42
0.41
0.40
0.39 TXEN = VL
TXC = TXQ
0.38
-45 -30 -15 0 15 30 45 60 75 90
TEMPERATURE (°C)
Maxim Integrated
  11

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