Datasheet
RH4Z2501 Datasheet
IO-Link transceiver with integrated protection
R36DS0032ED0100
Jun.8.23
Page 1
The RH4Z2501 is a line driver/level shifter IC for IO-
Link communication with integrated protection. It
addresses the IO-Link device physical layer for
sensors and actuator systems. The IC can also be
used as single channel master.
For device configuration and status reading, an OWI
communication interface is available.
The output drivers allow push-pull operation, with a
maximum R
DSON
of less than 2.5Ω for all operational
temperatures.
The RH4Z2501 is designed in a powerful CMOS
mixed-signal technology that allows short supply
voltage peaks up to 60V.
Applications
The RH4Z2501 acts as a universal cable driver.
The RH4Z2501 can support IO-Link
communications as a physical-layer transceiver
(PHY) for IO-Link devices and IO-Link masters.
• 24V line driver/level shifter.
• IO-Link-compliant devices.
• IO-Link-compliant masters.
Features
• Voltage supply range from 9V to 36V.
• Over-voltage peak robustness of ±60V.
• Configurable driver output current 50mADC to
400mADC.
• R
DSON
of less than 2.5Ω.
• Adjustable driver slew rate.
• Integrated Wake-up detection.
• MCU assisted Wake-up generation (typ.
700mA).
• OWI digital communication and calibration
interface.
• Integrated Linear Voltage Regulators 3.3V and
5V.
• Ambient Temperature range -40°C to 125°C.
• Glitch filter for receiver.
• Integrated protection:
o ±1.25kV/2.5A (peak) surge protection for L+,
CQ, GND/L- (8/20 µs pulse acc. IEC 61000-4-
5).
o Reverse polarity protection for L+, CQ, GND/L-
• On-chip diagnostics:
o Over temperature detection.
o Supply voltage monitor.
o Broken chip detection.
Figure 1. Typical Application Diagram
RH4Z2501 Datasheet
R36DS0032ED0100 Rev. 1.00
Jun.8.23
Page 2
Contents
1. Overview ......................................................................................................................................................... 5
1.1 Block Diagram ....................................................................................................................................... 5
1.2 Ordering Information .............................................................................................................................. 6
1.3 Pin Configuration ................................................................................................................................... 6
1.4 Pin Description ....................................................................................................................................... 6
1.5 Absolute Maximum Ratings ................................................................................................................... 7
1.6 Thermal Information .............................................................................................................................. 7
1.7 Recommended Operating Conditions ................................................................................................... 7
1.8 Electrical Specifications ......................................................................................................................... 8
2. Typical Performance Curves ...................................................................................................................... 10
3. Detailed Description .................................................................................................................................... 12
3.1 Linear Regulators ................................................................................................................................ 12
3.1.1. Internal 5V Linear Regulator ................................................................................................. 12
3.1.2. Using an External NPN Transistor ........................................................................................ 12
3.1.3. Using an External Step-Down Regulator .............................................................................. 13
3.1.4. 3.3V Regulator (IO Voltage) .................................................................................................. 13
3.1.5. Thermal Considerations ........................................................................................................ 13
3.2 C/Q Driver ............................................................................................................................................ 13
3.2.1. Driver Enable/Disable ........................................................................................................... 13
3.2.2. Overcurrent Protection .......................................................................................................... 14
3.2.3. Low Voltage Detection .......................................................................................................... 14
3.2.4. Thermal Protection ................................................................................................................ 14
3.3 Receiver Threshold ............................................................................................................................. 15
3.4 Wake-Up Detection ............................................................................................................................. 15
3.5 Wake-Up Generation ........................................................................................................................... 15
3.5.1. Master Mode ......................................................................................................................... 15
3.5.2. Device Mode ......................................................................................................................... 16
3.5.3. Used Pin ................................................................................................................................ 16
3.6 Protection ............................................................................................................................................. 16
3.6.1. Surge Protection ................................................................................................................... 16
3.6.2. Reverse Polarity Protection................................................................................................... 16
3.6.3. Broken Chip Detection .......................................................................................................... 16
4. OWI Interface ................................................................................................................................................ 17
4.1 OWI Protocol ....................................................................................................................................... 17
4.2 OWI Commands Structure .................................................................................................................. 17
4.2.1. OWI Write Command ............................................................................................................ 17
4.2.2. OWI Read Command ............................................................................................................ 18
5. Register Map ................................................................................................................................................ 20
5.1 IRQ_Status .......................................................................................................................................... 20
5.2 Status ................................................................................................................................................... 21
5.3 IRQ_Enable ......................................................................................................................................... 22
5.4 comParam ........................................................................................................................................... 23
5.5 comCtrl1 .............................................................................................................................................. 24