TIOL221 - Dual-Channel IO-Link PHY with LDO & SPI | Texas Instruments
MPN: TIOL221 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
Drop-in alternatives for TIOL221 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:
TIOL112
β Drop-Inπ Reference alternative (not in catalog)
TIOL221RGER
β Drop-Inπ Reference alternative (not in catalog)
TIOL221YAHR
β Drop-Inπ Reference alternative (not in catalog)
MAX14827A
β Drop-Inπ Reference alternative (not in catalog)
MAX14819
β Drop-Inπ Reference alternative (not in catalog)
TIOL221 Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Type | Transceiver |
| Protocol | IO-Link |
| Number of Drivers/Receivers | 2/2 |
| Duplex | Half |
| Supply Voltage | [DATA_NEEDED: Supply voltage range] |
| Wake-up Current | β₯ 500 mA |
| Wake-up Duration | Typically 80 ΞΌs |
| Surge Protection | 1.2 kV (500Ξ©) per IEC 61000-4-5 |
| Reverse Polarity Protection | Active |
| Integrated LDO | Yes |
| SPI Interface | Yes |
| Package | 24-VQFN (4x4 mm) |
| Operating Temperature Range | [DATA_NEEDED: Operating temperature range] |
| RoHS Status | Compliant |
TIOL221 Pin Configuration
| Pin 1 | CQ1 β Communication line for channel 1 |
| Pin 2 | CQ2 β Communication line for channel 2 |
| Pin 3 | VCC β Power supply |
| Pin 4 | GND β Ground |
| Pin 5 | WU β Wake-up output to MCU |
| Pin 6 | SCLK β SPI clock |
| Pin 7 | SDI β SPI data input |
| Pin 8 | SDO β SPI data output |
| Pin 9 | CS β SPI chip select |
| Pin 10 | DI β Auxiliary digital input |
| Pin 11 | LDO_OUT β LDO output |
| Pin 12 | NC β No connect |
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
TIOL221 is suitable for 6 applications: Industrial Sensors, Actuators, IO-Link Masters, Process Automation, Smart Factory, Building Automation.
Industrial Sensors
The TIOL221 is ideal for industrial sensors such as pressure, temperature, and proximity sensors. Its dual-channel capability allows two sensors to be connected to a single transceiver, reducing board space and cost. The integrated LDO simplifies power supply design, and the robust surge protection (1.2kV per IEC 61000-4-5) ensures reliable operation in harsh industrial environments. The SPI interface enables configuration and diagnostics, while the wake-up pulse generation supports IO-Link communication. With a wake-up current of at least 500mA, it can drive long cables and multiple loads. The device's protection features (undervoltage, overcurrent, overtemperature) enhance system reliability, making it a preferred choice for smart factory applications.
Recommended
Actuators
The TIOL221 is well-suited for actuator applications, such as valves, motors, and solenoids, in industrial automation. Its dual-channel design allows control of two actuators independently, while the integrated LDO provides a stable supply for the microcontroller. The device's ability to sink or source at least 500mA for wake-up ensures reliable activation of actuators. The SPI interface allows precise control and monitoring of actuator status. The built-in reverse polarity protection and surge protection (1.2kV) safeguard the device in industrial environments. The compact 24-VQFN package fits into space-constrained actuator housings, and the wide operating temperature range supports demanding applications.
Recommended
IO-Link Masters
The TIOL221 can be configured to generate a wake-up pulse, making it suitable for IO-Link master applications. In a master station, the TIOL221 manages communication with multiple IO-Link devices. Its dual-channel capability allows two independent IO-Link ports, increasing the number of connectable sensors. The integrated LDO and SPI interface simplify the master design, and the device's protection features ensure robust operation. The wake-up current capability of at least 500mA supports long cable runs. The TIOL221's compliance with IO-Link specifications ensures interoperability with various devices. This makes it a versatile choice for building industrial communication gateways.
Recommended
Process Automation
In process automation, the TIOL221 provides reliable communication for field devices such as flow meters, level sensors, and valve positioners. Its dual-channel design allows two devices to be connected, reducing wiring and cost. The integrated LDO ensures stable operation even with fluctuating supply voltages. The device's surge protection (1.2kV) and reverse polarity protection are critical in industrial environments with electrical noise. The SPI interface enables real-time diagnostics and configuration, improving system maintainability. The TIOL221's ability to handle wake-up currents of at least 500mA ensures reliable communication over long distances. Its compact package and wide temperature range make it suitable for harsh process environments.
Recommended
Smart Factory
The TIOL221 is a key component in smart factory implementations, enabling seamless communication between sensors, actuators, and control systems. Its dual-channel IO-Link PHY supports high-speed data exchange, while the integrated LDO and SPI interface simplify integration with microcontrollers. The device's robust protection features (undervoltage, overcurrent, overtemperature, surge, reverse polarity) ensure high reliability in demanding factory environments. The wake-up pulse generation capability supports efficient power management. The compact 24-VQFN package allows for dense PCB layouts, and the device's compliance with IO-Link standards ensures interoperability. This makes the TIOL221 an excellent choice for Industry 4.0 applications.
Recommended
Building Automation
The TIOL221 is suitable for building automation systems, such as HVAC controls, lighting controls, and occupancy sensors. Its dual-channel design allows two devices to be connected, reducing installation cost. The integrated LDO provides a stable supply for the microcontroller, and the SPI interface enables configuration and diagnostics. The device's surge protection (1.2kV) and reverse polarity protection ensure reliable operation in building environments. The wake-up current capability of at least 500mA supports long cable runs. The compact package and low power consumption make it ideal for energy-efficient building automation. The TIOL221's compliance with IO-Link standards ensures compatibility with various building automation protocols.
Recommended
Recommended Products Summary
Engineering reference data for TIOL221 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TIOL112 | MAX14827A | MAX14819 |
|---|---|---|---|---|
| Package | 24-VQFN (4x4 mm) | 24-VQFN (4x4 mm) | 24-TQFN (4x4 mm) | 24-TQFN (4x4 mm) |
| Brand | Texas Instruments | Texas Instruments | Analog Devices | Analog Devices |
| Number of Channels | 2 | 1 | 2 | 2 |
| Integrated LDO | Yes | Yes | Yes | Yes |
| SPI Interface | Yes | Yes | Yes | Yes |
| Surge Protection | 1.2kV (500Ξ©) per IEC 61000-4-5 | 1.2kV (500Ξ©) per IEC 61000-4-5 | [DATA_NEEDED] | [DATA_NEEDED] |
| Wake-up Current | β₯ 500 mA | β₯ 500 mA | [DATA_NEEDED] | [DATA_NEEDED] |
| Reverse Polarity Protection | Active | Active | Yes | Yes |
Key Differentiators
- Dual-channel capability (vs TIOL112)
- Integrated LDO and SPI (vs MAX14827A)
- Surge protection rating (vs MAX14819)
Design Notes
The TIOL221 integrates an LDO, but proper decoupling is essential. Place a 1Β΅F ceramic capacitor close to the LDO_OUT pin and a 10Β΅F capacitor on the VCC pin to ensure stable operation. The LDO output should be used only for internal logic; for external loads, use a separate regulator to avoid overloading.
For optimal EMC performance, keep the CQ traces as short as possible and use a solid ground plane. Add series resistors (e.g., 10Ξ©) on the CQ lines to reduce ringing. Ensure the exposed pad is soldered to the PCB ground for thermal and electrical performance.
Do not exceed the absolute maximum ratings for VCC and CQ pins. The SPI interface must be configured correctly to avoid communication errors. Ensure the wake-up timing (tWUL) is set according to the IO-Link specification. Use TVS diodes for surge protection beyond the built-in 1.2kV rating.
Compliance Information
RoHS compliance is indicated by TI's product page. Other compliance details are not specified in the provided data.
