TJA1085GHN/0Z NXP

TJA1085G FlexRay active star coupler Rev. 1 28 February 2017 Product data sheet 1. General description The TJA1085G is a FlexRay active star coupler that can connect up to 4 branches of a FlexRay network. The TJA1085G is compliant with the FlexRay electrical physical layer specification V3.0.1/ISO17458-4 (see Ref. 1 and Ref. 2). Several TJA1085G devices can be connected via their TRXD0/1 interfaces to increase the number of branches in the network. A dedicated Communication Controller (CC) interface allows for integration into an ECU. The TJA1085G supports low-power management by offering bus wake-up capability along with battery supply and voltage regulator control. The TJA1085G meets industry standards for EMC/ESD performance and provides enhanced bus error detection, low current consumption and unmatched asymmetric delay performance. 2. Features and benefits 2.1 General Compliant with FlexRay Electrical Physical Layer specification V3.0.1/ISO17458-4 Automotive product qualification in accordance with AEC-Q100 Data transfer rates from 2.5 Mbit/s to 10 Mbit/s Supports 60 ns minimum bit time at 400 mV differential voltage Low-power management for battery-supplied ECUs Very low current consumption in AS Sleep mode Leadless HVQFN44 package with improved Automated Optical Inspection (AOI) capability 2.2 Functional Supports autonomous active star operation independent of the host ensuring the TJA1085G remains active even if the host fails or is switched off Branches can be independently configured Branch extension via TRXD0/1 inner star interface 16-bit bidirectional SPI interface up to 2 Mbit/s for host communication Full host control over branch status Enhanced wake-up capability: Remote wake-up via wake-up pattern and dedicated FlexRay data frames Local wake-up via pin LWU Wake-up source recognition configurable per branch Enhanced supply voltage monitoring on V , V , V and V IO CC BUF BATTJA1085G NXP Semiconductors FlexRay active star coupler Auto I/O level adaptation to host controller supply voltage V IO Can be used in 14 V, 24 V and 48 V powered systems Enhanced bus error detection - detects short-circuit conditions on the bus Instant transmitter shut-down interface (BGE pin) Selective branch shut-down (partial networking) 2.3 Robustness Bus pins protected against 8 kV ESD pulses according to HBM and 6 kV ESD pulses according to IEC61000-4-2 All pins protected against 1000 V ESD according to CDM All pins protected against 200 V ESD according to MM No reverse currents from the digital input pins to V or V when the TJA1085G is not IO CC powered up Bus pins short-circuit proof to battery voltage (14 V, 24 V or 48 V) and ground Overtemperature detection and protection Bus pins protected against transients in automotive environment (according to ISO 7637 class C) 2.4 Active star functional classes Active star - communication controller interface Active star - bus guardian interface Active star - voltage regulator control Active star - logic level adaptation Active star - host interface Active star - increased voltage amplitude transmitter TJA1085G All information provided in this document is subject to legal disclaimers. NXP Semiconductors N.V. 2017. All rights reserved. Product data sheet Rev. 1 28 February 2017 2 of 63