TIOL221RGER - Dual-Channel IO-Link PHY, LDO, SPI | Texas Instruments
MPN: TIOL221RGER β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.2 | $3.20 |
| 10 | $2.88 | $28.80 |
| 100 | $2.45 | $245.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.85 | $1,850.00 |
Drop-in alternatives for TIOL221RGER β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TIOL1125
β‘ Same Packageβ In Stock
$1.1 / Unit
View Datasheet βTIOL1115RGER
β‘ Same Packageπ Reference alternative (not in catalog)
TIOL221RGER Maximum Ratings & Electrical Characteristics
| Function | Dual-channel IO-Link device PHY transceiver |
| Channels | 2 (Tx/Rx) plus auxiliary DI |
| Protocol | IO-Link (three-wire interface) |
| Integrated LDO | Yes |
| Control Interface | SPI |
| Wake-Up Current Capability | >= 500 mA (typ. 80 us duration) |
| Wake-Up Pulse Generation | Yes, configurable |
| Surge Immunity | 1.2 kV (500 ohm) per IEC 61000-4-5 |
| Protection Features | Reverse polarity (active), undervoltage, overcurrent, overtemperature |
| IO-Link Master Support | Yes |
| Supply Voltage | [DATA_NEEDED: supply voltage range] |
| Data Rate | [DATA_NEEDED: IO-Link data rates COM1/COM2/COM3] |
| Quiescent Current | [DATA_NEEDED: quiescent current] |
| Operating Temperature | [DATA_NEEDED: operating temperature range] |
| Package | 24-VQFN (4x4 mm), RGE |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
TIOL221RGER Pin Configuration
| Pin [DATA_NEEDED] | LDO_OUT β Integrated LDO output powering internal logic and external MCU |
| Pin [DATA_NEEDED] | VDD β Supply input from IO-Link L+ line |
| Pin [DATA_NEEDED] | CQ1 β Channel 1 CQ line driver/receiver |
| Pin [DATA_NEEDED] | CQ2 β Channel 2 CQ line driver/receiver |
| Pin [DATA_NEEDED] | WU β Wake-up indicator to MCU (asserted low for tWUL) |
| Pin [DATA_NEEDED] | DI β Auxiliary digital input channel |
| Pin [DATA_NEEDED] | SPI (CS/SCLK/MOSI/MISO) β SPI configuration and diagnostics interface |
| Pin [DATA_NEEDED] | GND β Ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TIOL221RGER is suitable for 6 applications: Industrial Proximity Sensors, IO-Link Master Stations, Pressure and Temperature Sensor Nodes, Actuator Control Modules, Motor Feedback and Encoder Interfaces, IIoT Sensor Hubs and Gateways.
Industrial Proximity Sensors
The TIOL221 fits IO-Link proximity sensor nodes because its dual low-power output drivers drive the three-wire L+/CQ interface directly while its active reverse polarity protection survives miswiring during installation. The >= 500 mA wake-up capability for ~80 microseconds meets IO-Link wake requirements without external power switches. The integrated LDO powers the sensor MCU from the 24V industrial rail, and the auxiliary DI channel can read a second sensor element, reducing external logic. Surge robustness of 1.2 kV (500 ohm) per IEC 61000-4-5 addresses cable-borne transients common on factory floors.
Recommended
IO-Link Master Stations
The TIOL221 can be used in IO-Link master applications: it is configured to generate wake-up pulses, sinking or sourcing at least 500 mA for the typical 80 microsecond wake duration depending on CQ logic level. Two integrated channels let a master board drive two ports with one IC, halving PHY area versus discrete solutions. SPI control lets a host MCU configure each port independently and read fault status (undervoltage, overcurrent, overtemperature). Active reverse polarity protection protects master ports against field miswiring, improving mean time between failures in modular I/O systems.
Recommended
Pressure and Temperature Sensor Nodes
For smart pressure and temperature transmitters, the TIOL221 provides the complete IO-Link physical layer: it converts MCU SPI-configured data to CQ-line signaling and reports wake events via the WU pin for tWUL. The integrated LDO derives low-noise logic power from the 24V line, and built-in overcurrent and overtemperature protection guards against shorted field cables. Designers pair the PHY with a precision ADC and MCU; the PHY's fault reporting lets the transmitter firmware flag diagnostic codes back to the PLC via IO-Link, supporting predictive maintenance schemes required in process industries.
Recommended
Actuator Control Modules
Pneumatic valves, solenoids, and indicator actuators over IO-Link use the TIOL221's drivers to switch the CQ line between logic levels while its >= 500 mA capability covers the inrush of wake pulses. The SPI interface enables per-port configuration of driver modes and real-time diagnostics, letting the controller detect open-wire or overtemperature faults and report them per IO-Link ISDU parameters. Dual channels allow one IC to control two actuator ports in compact valve manifolds. The active reverse polarity protection is valuable in panel wiring where supply polarity errors occur during commissioning.
Recommended
Motor Feedback and Encoder Interfaces
Industrial encoders with IO-Link interfaces benefit from the TIOL221's robust PHY: 1.2 kV (500 ohm) surge immunity per IEC 61000-4-5 handles transients on long motor cables, and the undervoltage lockout prevents corrupted transmissions during brownouts. The device acts as the complete physical layer between the encoder ASIC/MCU and the three-wire IO-Link port, with the WU output letting encoder firmware wake from sleep on master requests to minimize power. The dual-channel version also supports auxiliary output signals alongside the IO-Link channel in hybrid encoder designs.
Recommended
IIoT Sensor Hubs and Gateways
In Industry 4.0 gateways aggregating multiple IO-Link devices, the TIOL221's dual channels reduce PHY component count: four ICs provide eight ports versus eight single-channel PHYs, cutting board area and cost. SPI bus configuration allows a central MCU to manage all PHYs and poll fault registers over the same SPI lines. Integrated protection (overcurrent, overtemperature, reverse polarity) plus 1.2 kV surge robustness suits the electrically noisy environments of dense industrial cabinets. The TIOL221EVM accelerates firmware bring-up of multi-port gateway designs before custom hardware.
Recommended
Recommended Products Summary
Engineering reference data for TIOL221RGER β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TIOL1125 | TIOL1115RGER | TIOL1115DMRR |
|---|---|---|---|---|
| Package | 24-VQFN (4x4 mm) | VQFN (RGE) family | 24-VQFN (4x4 mm) | SON-8 |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Channels | 2 (dual) + auxiliary DI | 1 | 1 | 1 |
| Integrated LDO | Yes | Yes | Yes | Yes |
| Configuration Interface | SPI | SPI/I2C-style per datasheet | UART/parallel control | UART/parallel control |
| Wake-Up Current | >= 500 mA (~80 us) | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Surge Immunity | 1.2 kV (500 ohm) IEC 61000-4-5 | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| IO-Link Master Support | Yes | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Dual-channel integration (vs TIOL1115RGER)
- SPI-based configuration and diagnostics (vs TIOL1115DMRR)
- Integrated LDO plus active reverse polarity protection (vs TIOL1125)
Design Notes
Decouple the integrated LDO output with local ceramic capacitance per the TI TIOL221 datasheet and keep the LDO output trace short to the MCU supply pin. The PHY drives >= 500 mA wake pulses on CQ, so bulk capacitance on the L+ supply input must sustain the ~80 microsecond wake current without drooping below undervoltage thresholds, or false fault flags may occur.
Place the TIOL221 close to the IO-Link connector with a solid ground return for the CQ lines. Keep SPI traces short and route away from CQ switching paths. Although the device tolerates 1.2 kV (500 ohm) surge per IEC 61000-4-5, add external TVS diodes on L+ and CQ when the installation demands higher surge levels than the built-in protection.
Configure wake-up timing parameters (tWUL and the ~80 microsecond wake duration) per the IO-Link specification through the SPI interface; default register settings may not match your master or device role. Remember that wake current polarity depends on CQ logic level - sink or source mode must match your port wiring, or wake detection will fail.
Compliance Information
RoHS compliance per DigiKey/TI listings for TIOL221RGER. REACH and halogen-free status not stated in provided data.
