Features
- Embedded IO-Link stack license
- Voltage supply range from 9V to 36V
- Overvoltage peak robustness of ±60V
- Ambient temperature range of -40°C to +125°C
- Configurable driver output current from 50mA DC to 400mA DC
- RDS(ON) below 2.5Ω
- Adjustable driver slew rate
- Integrated wake-up detection
- MCU-assisted wake-up generation (typ. 700mA)
- OWI digital communication and calibration interface
- Integrated 3.3V and 5V linear voltage regulators
- Glitch filter for receiver
- Integrated protection:
- ±1.25kV/2.5A (peak) surge protection for L+, CQ, and GND/L- (8/20µs pulse per IEC 61000-4-5)
- Reverse-polarity protection for L+, CQ, and GND/L-
- On-chip diagnostics:
- Overtemperature detection
- Supply voltage monitoring
- Broken-chip detection
Description
The RH4Z2502 is a line driver/level shifter IC for IO-Link communication with integrated protection. It addresses the IO-Link physical layer for sensor and actuator applications. The IC includes an IO-Link stack license for use with RA2 Family MCUs. An OWI communication interface is available for device configuration and status monitoring. The output drivers support push-pull operation with an RDS(ON) below 2.5Ω across the full operating temperature range. Fabricated using a robust CMOS mixed-signal technology, the RH4Z2502 withstands short supply voltage peaks of up to 60V.
Parameters
| Attributes | Value |
|---|---|
| Channels (#) | 1 |
| Master/Device | M/D |
| Advanced Features | Embedded reverse polarity, Embedded overvoltage protection, Embedded surge protection, Embedded stack license |
| Supply Voltage (V) | 9 - 36 |
| Temp. Range (°C) | -40 to 125°C |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| DFN | 3.0 x 3.0 x 0.75 | 12 | 0.5 |
Product Comparison
 | | |
| RH4Z2502 | RH4Z2501 | |
| Advanced Features | Embedded overvoltage protection, Embedded reverse polarity, Embedded stack license, Embedded surge protection | Embedded overvoltage protection, Embedded reverse polarity, Embedded surge protection |
| Channels (#) | 1 | 1 |
| Supply Voltage | 9 - 36 | 9 - 36 |
| Slew Rate (V/µs) | 140 | 140 |
| Pkg. Type | DFN | DFN, WLCSP |
| Lead Count (#) | 12 | 12, 15 |
| Pkg. Dimensions (mm) | 3.0 x 3.0 x 0.75 | 2.41 x 1.61 x 0.6, 3.0 x 3.0 x 0.75 |
| Temp. Range (°C) | -40 to 125°C | -40 to 125°C |
Application Block Diagrams
 | IO-Link Sensors and Actuators IO-Link device systems for industrial sensors and actuators, enabling streamlined development, fast prototyping, and reliable communication. |
Additional Applications
- Universal Cable Driver
- IO-Link Physical-Layer Transceiver (PHY)
- IO-Link-Compliant Devices
- 24V Line Driver/Level Shifter
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Knowledge Base
- RH4Z2502: How can the IO-Link stack library be ported to other microcontrollers?
... Link stack library be ported to other microcontrollers? Answer: The library can be ported across the RA2 microcontroller family with minimal effort within the Visual Studio development environment. For porting to other microcontroller families (e.g. RA4, RA0), please contact Renesas. Suitable ProductsRH4Z2502, RA2E1 日本語 中文
Oct 8, 2026 - RH4Z2502: What software adjustments are required to create a complete IO-Link device application?
... a complete IO-Link device application? Answer: The product-specific software for the sensor or actuator application must be added to the target microcontroller. The IO-Link stack library must be adapted and linked to the target software via its API. Suitable ProductsRH4Z2502, RA2E1 日本語 中文
Oct 8, 2026 - RH4Z2502: Is it still necessary to conduct IO-Link conformance tests?
... still necessary to conduct IO-Link conformance tests? Answer: Since the hardware solution and the IO-Link Stack both must be adjusted to build a complete product application, complete IO-Link conformance testing is mandatory according to IO-Link test specification. Suitable ProductsRH4Z2502, RA2E1 日本語 中文
Oct 8, 2026
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