NXP Semiconductors TJF1052IT/2Y

Overview

TJF1052IT/2Y from NXP Semiconductors is a galvanically isolated high-speed CAN transceiver integrating capacitive isolation and physical-layer transceivers in a single SO16 package. It provides differential transmit/receive capability for microcontroller-based CAN controllers, supports data rates up to 5 Mbit/s (CAN FD fast phase), features 2.5 kV_RMS isolation rating per UL 1577/IEC 61010, and operates across −40 °C to +105 °C ambient temperature - enabling robust node-level isolation in industrial motor drives and elevator control systems.

For engineers reviewing the TJF1052IT/2Y datasheet, TJF1052IT/2Y pinout, TJF1052IT/2Y application, or TJF1052IT/2Y equivalent, key selection criteria include verified loop delay symmetry (<220 ns), bus common-mode voltage tolerance (±25 V), CMTI performance (45 kV/µs typ), and dual-supply undervoltage detection thresholds on VDD1 and VDD2.

Technical Context

The TJF1052IT/2Y implements ISO 11898-2:2003-compliant CAN physical layer with integrated capacitive isolator, eliminating need for external isolation components. Its transmitter delivers controlled slew-rate outputs (VO(dif) = 1.5–3 V dominant, ±50 mV recessive), while the differential receiver maintains threshold voltage (Vth(RX)dif = 0.5–0.9 V) and hysteresis (165 mV) over ±25 V common-mode range.

It supports two operational modes: Normal mode (full TX/RX functionality with bus termination at VDD2/2) and Standby mode (low-power receiver active, CANH/CANL biased to GND, STB HIGH or VDD2 < 3.5 V). Undervoltage protection triggers mode transitions at defined Vuvd(stb)(VDD2) (3.5–4.75 V) and Vuvd(swoff)(VDD2) (1.3–2.7 V) thresholds.

Key Specifications

Pinout & Package

Package: SO16 (SOT162-1), plastic small outline, 16-lead, 7.5 mm body width. Dual ground domains (GND1 for logic side, GND2 for bus side) require separate PCB copper pours with minimal inter-domain coupling.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar galvanically isolated CAN transceiver applications.

Compared with ADM3053BRWZ and ISO1050DUBR, the TJF1052IT/2Y delivers higher-speed CAN FD readiness (5 Mbit/s), tighter loop delay control (≤220 ns), and superior transient immunity (45 kV/µs), making it optimal for next-generation industrial automation demanding deterministic communication and enhanced safety certification.

Availability

TJF1052IT/2Y is available at Aetrix Electronics and suitable for industrial motor drives, elevator control systems, on-demand hydraulic pumps, and conveyor belt automation requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for TJF1052IT/2Y 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

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with core expertise in CAN, SBC, and isolated interface technologies.

The TJF1052IT/2Y belongs to NXP's third-generation isolated CAN transceiver family, engineered specifically for industrial safety-critical networks requiring reinforced insulation, high EMC resilience, and seamless integration with 3 V/5 V microcontrollers.

FAQ

What isolation voltage rating does the TJF1052IT/2Y provide?

The TJF1052IT/2Y provides a 2.5 kV_RMS rated isolation voltage compliant with UL 1577, IEC 61010, and IEC 60950 standards. This corresponds to a maximum working insulation voltage of 450 V_RMS per IEC 60664 and supports Overvoltage Category III applications. The TJF1052IT/2Y achieves this via proprietary capacitive isolation technology with minimum creepage (8.1 mm) and clearance (8.6 mm) distances in its SO16 package.

Does the TJF1052IT/2Y support CAN FD operation?

Yes, the TJF1052IT/2Y is explicitly designed for CAN FD fast-phase operation up to 5 Mbit/s, with timing parameters including loop delay symmetry (td(TXDL-RXDL) ≤ 220 ns) and bit timing accuracy validated for compliance with ISO 11898-2:2003 and pending ISO 11898-2:2016 requirements. Its differential output voltage (VO(dif) = 1.5–3 V dominant) and receiver threshold (Vth(RX)dif = 0.5–0.9 V) ensure reliable high-speed data transmission in noisy industrial environments.

How does the TJF1052IT/2Y handle undervoltage conditions on VDD2?

The TJF1052IT/2Y implements dual-stage VDD2 undervoltage detection: at 3.5–4.75 V it enters Standby mode (low-power receiver active, CANH/CANL biased to GND), and below 1.3–2.7 V it fully disengages from the bus (zero-load state). This behavior is documented in Section 7.2.2 of the TJF1052IT/2Y datasheet and ensures safe bus release during brownout conditions without requiring external supervision circuitry.

Can the TJF1052IT/2Y interface directly with 3 V microcontrollers?

Yes, the TJF1052IT/2Y supports 3 V logic levels on its VDD1 supply (3.0–5.25 V range) and TXD/RXD pins, with VIH(min) = 2.0 V and VOL(max) = 0.4 V - ensuring full compatibility with 3 V CMOS microcontrollers without level-shifting. Its VDD1 undervoltage detection threshold (1.3–2.7 V) also aligns with typical 3 V regulator dropout characteristics, enabling robust power sequencing.

What is the purpose of the STB pin on the TJF1052IT/2Y?

The STB (Standby) pin on the TJF1052IT/2Y is an active-HIGH control input that disables the main CAN transmitter and normal receiver while retaining low-power bus monitoring capability. When STB is HIGH (or VDD2 drops below 3.5 V), the device enters Standby mode: CANH/CANL are pulled to GND, RXD reflects filtered bus activity, and quiescent current remains near Normal mode levels - enabling wake-up readiness without deep sleep compromises.