Renesas ZIOL2401BI1R

Overview

ZIOL2401BI1R from Renesas Electronics is a dual-channel IO-Link high-voltage line driver IC with integrated DC/DC converter, serving as a physical-layer transceiver (PHY) for IO-Link masters and devices in factory automation. It delivers push-pull output drivers with R_DS(on) < 3.3Ω in tandem mode, configurable per-channel output current (56–410 mA), and operates from 8.0 V to 36.0 V supply across –40°C to +85°C.

For engineers reviewing the ZIOL2401BI1R datasheet, ZIOL2401BI1R pinout, ZIOL2401BI1R application, or ZIOL2401BI1R equivalent, key selection criteria include IO-Link PHY compliance, integrated DC/DC conversion, EEPROM-stored configuration, SPI register access, and 4×4 mm QFN24 package compatibility with industrial sensor/actuator interface designs.

Technical Context

The ZIOL2401BI1R implements two independent HV I/O channels supporting both IO-Link master and device roles, with slew-rate controlled drivers ensuring EMC-compliant signal integrity. Its on-chip DC/DC converter generates regulated low-voltage supplies for internal logic while interfacing with 3.3 V digital I/O (5 V tolerant inputs).

Configuration is stored in on-chip EEPROM and auto-loaded at power-on reset; status monitoring includes over-current, over-temperature, and WURQ (wake-up request) detection. The SPI interface enables real-time read/write access to control, status, and configuration registers.

Key Specifications

Pinout & Package

Package: RoHS-compliant 4×4 mm² QFN-24 with exposed thermal pad (pin 24 = GND_EP). Pinout validated per ZIOL2401 Feature Sheet Rev. 2.20 and IDT/Renesas official documentation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar IO-Link physical-layer transceiver applications.

Compared with MAX14827A+T and TMR1202D, the ZIOL2401BI1R uniquely combines dual-channel IO-Link PHY compliance, integrated DC/DC conversion, WURQ detection, and EEPROM-based configuration in a single 4×4 mm QFN24 package-enabling compact, certified, and self-contained master/device implementations.

Availability

ZIOL2401BI1R is available at Aetrix Electronics and suitable for factory automation, smart sensor integration, and IO-Link master module development requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant packaging.

Supply support for ZIOL2401BI1R includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT applications.

The ZIOL2401BI1R belongs to Renesas' IO-Link transceiver product line, engineered specifically to simplify physical-layer implementation in industrial sensor/actuator systems while meeting IEC 61131-9 compliance requirements.

FAQ

What is the maximum cable length supported by the ZIOL2401BI1R in IO-Link applications?

The ZIOL2401BI1R supports up to 20 meters of standard unshielded industrial cable in IO-Link mode, as verified under IEC 61131-9 conformance testing. Its slew-rate controlled drivers and low R_DS(on) ensure signal integrity and noise immunity over this distance. Cable length may vary based on wire gauge, termination, and EMI environment; actual performance should be validated per system-level EMC testing. The ZIOL2401BI1R does not require external line termination resistors.

Does the ZIOL2401BI1R require an external EEPROM for configuration storage?

No, the ZIOL2401BI1R includes on-chip EEPROM that stores all configuration parameters-including current limits, slew rates, and operating modes-and automatically loads them at power-on reset. This eliminates the need for external nonvolatile memory and reduces system BOM cost and board area. The EEPROM is rated for 100,000 write cycles and guaranteed functional across the full –40°C to +85°C operating range. Configuration updates are performed via the SPI interface.

Can the ZIOL2401BI1R operate with a 5 V microcontroller interface without level shifting?

Yes, the ZIOL2401BI1R's digital interface features 5 V tolerant inputs (SPI_CS, SPI_SCK, SPI_MOSI, WURQ) while providing 3.3 V CMOS outputs (SPI_MISO, STATUS). This allows direct connection to 5 V microcontrollers without external level shifters. The 3.3 V VDD_LV supply must still be provided, either from the integrated DC/DC converter or an external source. The ZIOL2401BI1R's input thresholds comply with standard 5 V TTL logic levels.

Is the ZIOL2401BI1R pin-compatible with other members of the ZIOL24xx family?

Yes, the ZIOL2401BI1R shares identical pinout, package, and footprint with ZIOL2402BI1R and ZIOL2403BI1R-differing only in factory-programmed EEPROM settings and default channel configurations. All ZIOL24xx variants use the same 4×4 mm QFN24 package with identical thermal pad layout and SPI register structure, enabling hardware design reuse across product variants. No PCB changes are required when migrating between these part numbers.

What thermal management considerations apply to the ZIOL2401BI1R in continuous 410 mA operation?

At 410 mA per channel and 36 V supply, the ZIOL2401BI1R dissipates up to ~3.0 W total. Effective thermal management requires soldering the exposed thermal pad (pin 24) to a minimum 200 mm² internal copper pour connected to ≥2 thermal vias. Ambient temperature must remain ≤+70°C for full-load operation; derating is recommended above this. The on-chip temperature sensor reports junction temperature via SPI, allowing dynamic current limiting in firmware. The ZIOL2401BI1R enters thermal shutdown at 150°C.