TJA1081TS,112 NXP

TJA1081 FlexRay node transceiver Rev. 4 24 February 2011 Product data sheet 1. General description The TJA1081 is a FlexRay node transceiver that is fully compliant with the FlexRay electrical physical layer specification V2.1 Rev. A (see Ref. 1). In addition, it incorporates features and parameters included in V3.0.1 (see Ref. 2 and Section 14). It is primarily intended for communication systems from 1 Mbit/s to 10 Mbit/s, and provides an advanced interface between the protocol controller and the physical bus in a FlexRay network. The TJA1081 features enhanced low-power modes, optimized for ECUs that are permanently connected to the battery. The TJA1081 provides differential transmit capability to the network and differential receive capability to the FlexRay controller. It offers excellent EMC performance as well as high ESD protection. The TJA1081 actively monitors system performance using dedicated error and status information (that can be read by any microcontroller), along with internal voltage and temperature monitoring. The TJA1081 supports mode control as used in the TJA1080A (see Ref. 3). 2. Features and benefits 2.1 Optimized for time triggered communication systems Compliant with FlexRay electrical physical layer specification V2.1 Rev. A (see Ref. 1) Automotive product qualification in accordance with AEC-Q100 Data transfer up to 10 Mbit/s Support of 60 ns minimum bit time Very low ElectroMagnetic Emission (EME) to support unshielded cable Differential receiver with wide common-mode range for high ElectroMagnetic Immunity (EMI) Auto I/O level adaptation to host controller supply voltage V IO Can be used in 14 V and 42 V powered systems Instant shut-down interface (via BGE pin) Independent power supply ramp-up for V , V and V BAT CC IO 2.2 Low power management Low power management including inhibit switch Very low current in Sleep and Standby modesTJA1081 NXP Semiconductors FlexRay node transceiver Local and remote wake-up Supports remote wake-up via dedicated data frames Wake-up source recognition 2.3 Diagnosis (detection and signalling) Overtemperature detection Short-circuit on bus lines V power-on flag (first battery connection and cold start) BAT Pin TXEN and pin BGE clamping Undervoltage detection on pins V , V and V BAT CC IO Wake source indication 2.4 Protection Bus pins protected against 8 kV HBM ESD pulses Bus pins protected against transients in automotive environment (according to ISO 7637 class C) Bus pins short-circuit proof to battery voltage (14 V and 42 V) and ground Fail-silent behavior in the event of an undervoltage on pins V , V or V BAT CC IO Passive behavior of bus lines while the transceiver is not powered 2.5 Functional classes according to FlexRay electrical physical layer specification (see Ref. 1) Bus driver voltage regulator control Bus driver - bus guardian control interface Bus driver logic level adaptation 3. Ordering information Table 1. Ordering information Type number Package Name Description Version TJA1081TS SSOP16 SSOP16: plastic shrink small outline package 16 leads body width 5.3 mm SOT338-1 TJA1081 All information provided in this document is subject to legal disclaimers. NXP B.V. 2011. All rights reserved. Product data sheet Rev. 4 24 February 2011 2 of 37