1 Features
• 7V to 36V supply voltage
• IO-link configurable CQ output with auxiliary digital
output (DO) and digital input (DI) channels
• Configurable via pin-control or SPI interface
• PNP, NPN or IO-Link configurable CQ output
– IEC 61131-9 COM1, COM2 and COM3 Data
Rate Support
• Output drivers with low power dissipation and high
configurability
– Low RDSON 2.5Ω (typical)
– Active driver current limiting capability
– Configurable driver overcurrent limit:
50mA to 350mA
– Active reverse polarity protection of up to 65V
on LP, CQ, DO and DI
– Safe and fast demagnetization of inductive
loads
• Integrated protection features for robust systems
– Fault indicator for overcurrent, overtemperature
and UVLO faults
– Extended ambient temperature operation:
–40°C to 125°C
– ±8kV IEC 61000-4-2 ESD contact discharge
– ±4kV IEC 61000-4-4 electrical fast transient
– ±1.2kV, 500Ω IEC 61000-4-5 surge
• Large capacitive and inductive load driving
capability
• Integrated LDO provides up to 20mA current
• Optional external regulator input (5V) to reduce
internal power dissipation in the LDO
• Small space-saving package options
– 4mm x 4mm VQFN package
– 2.7mm x 2.7mm DSBGA package

2 Applications
• Field Transmitters and actuators
• Factory automation
• Process automation
• IO-link PHY in remote IO

3 Description
The TIOL221 transceiver integrates dual low-power
output drivers with active reverse polarity protection.
When the device is connected to an IO-Link controller
through a three-wire interface, the controller can
initiate communication, and exchange data with the
remote node while the TIOL221 acts as a complete
physical layer for the communication. The device also
integrates an auxiliary DI channel.
The device is capable of withstanding up to 1.2kV
(500Ω) of IEC 61000-4-5 surge and feature integrated
reverse polarity protection. In addition to the SPI
interface for configurability and expanded diagnostic
capability, a simple pin-programmable interface allows
easy interfacing with the controller circuits. The
output current limit can be configured using either
an external resistor or per-configured limits via SPI
interface. TIOL221 can be configured to generate
wake-up pulse, and be used in IO-link controller
applications. Fault reporting and internal protection
functions are provided for undervoltage, overcurrent
and overtemperature conditions.