STMicroelectronics L6360TR

Overview

L6360TR from STMicroelectronics is an IO-Link master transceiver IC compliant with PHY2 (3-wire) and supporting COM1 (4.8 kbaud), COM2 (38.4 kbaud), and COM3 (230.4 kbaud) modes. It integrates programmable high-side/low-side/push-pull C/QO output stages (< 2 Ω R_ON), 500 mA L+ protected high-side driver, fast-mode I²C interface (400 kHz), dual diagnostic LED sequencer, and embedded 3.3 V/5 V linear regulator - deployed in industrial sensor nodes for bidirectional data and power delivery over standard M12 cables.

For engineers reviewing the L6360TR datasheet, L6360TR pinout, L6360TR application, or L6360TR equivalent, key selection criteria include programmable cut-off current (70–720 mA), L+ demagnetization energy handling (10 mJ), thermal shutdown (150 °C), IEC61131-2 Type 1 input support, and VFQFPN26L package compatibility with space-constrained PCB layouts.

Technical Context

The L6360TR implements a dual-channel IO-Link physical layer: C/QI and I/Q pins handle digital signal conditioning per IEC61131-2 Type 1 thresholds (V_QTHL = 8–11.4 V, V_QTHH = 10.5–12.9 V), while C/QO supports configurable drive modes with programmable cut-off delay (100–250 μs) and restart timing (255 × delay). Its internal 9-register I²C configuration space enables real-time fault monitoring (L+, overtemperature, C/Q overload, regulator UVLO, parity error) and dynamic LED sequence control.

It integrates two independent protection domains: one for the L+ switch (cut-off current 480–730 mA, R_ONL = 1–2 Ω) and another for C/QO (limitation current 500–1600 mA, R_ONCQH/R_ONCQL = 0.6–2 Ω), both featuring thermal hysteresis (20 °C) and latch/unlatch via I²C. The linear regulator delivers stable 3.3 V or 5 V (SEL pin-controlled) at up to 50 mA with ±0.1 V hysteresis on undervoltage detection.

Key Specifications

Pinout & Package

VFQFPN26L (3.5 × 5 × 1 mm) with exposed thermal pad connected to L- (pins 2/21 and EP). Pin count: 26. Pitch: 0.5 mm. RoHS-compliant, halogen-free.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar IO-Link master port applications.

Compared with MAX14824 and TMR112, the L6360TR uniquely integrates L+ power switching, dual-voltage regulation, COM3 support, and hardware-programmable I²C addressing - reducing BOM count and enabling full-featured, space-constrained IO-Link masters without external support circuitry.

Availability

L6360TR is available at Aetrix Electronics and suitable for industrial sensors, factory automation controllers, and process control I/O modules requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for ISO 13849-certified systems.

Supply support for L6360TR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal solutions for industrial, automotive, and consumer markets.

The L6360TR belongs to ST's IO-Link portfolio, engineered specifically to simplify industrial edge connectivity by integrating PHY, power, protection, and diagnostics into a single monolithic IC for smart sensor and actuator interfaces.

FAQ

What IO-Link communication modes does the L6360TR support?

The L6360TR supports all three standard IO-Link communication modes: COM1 (4.8 kbaud), COM2 (38.4 kbaud), and COM3 (230.4 kbaud), compliant with PHY2 (3-wire) physical layer requirements. It automatically adapts to the connected device's mode via C/QI signal analysis and can be configured via I²C registers to lock or auto-negotiate mode. No external mode-select resistors or jumpers are required.

How is overcurrent protection implemented on the L+ and C/QO outputs?

L+ and C/QO each have independent overcurrent protection: L+ features programmable cut-off current (480–730 mA) with 500–2500 μs delay before shutdown, while C/QO offers four selectable cut-off levels (70–720 mA) and adjustable delay (100–250 μs). Both include current limitation (500–1600 mA) and thermal shutdown (150 °C) with 20 °C hysteresis. Recovery is automatic after delay expiration unless latched via I²C.

Can the L6360TR drive inductive loads like solenoids or valves?

Yes - the L6360TR's L+ output supports inductive loads up to 10 mJ, and its C/QO output (in high-side or push-pull mode) handles inductive back-EMF with integrated freewheeling diodes (V_fHS/V_fLS = 0.5 V @ 10 mA). Demagnetization voltage is specified at –4.8 to –8.5 V, ensuring safe energy dissipation without external snubbers in typical valve actuation profiles.

What is the function of the Rbias pin, and how critical is its tolerance?

Rbias (pin 7) sets internal reference voltages for C/QI/I/Q thresholds, cut-off currents, and timing delays via a precision 124 kΩ ±0.1% external resistor. Deviations >±0.1% cause measurable shifts: e.g., ±1% Rbias change alters ICOQ by ±1.3%, tdcoq by ±2.4%, and ILIMQ by ±0.7%. ST recommends metal-film resistors with 0.1% tolerance and low TC for production designs.