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TJA1085 반도체 회로 부품 판매점

FlexRay active star coupler



NXP Semiconductors 로고
NXP Semiconductors
TJA1085 데이터시트, 핀배열, 회로
TJA1085
FlexRay active star coupler
Rev. 1 — 23 October 2012
Product data sheet
1. General description
The TJA1085 is a FlexRay active star coupler that can connect up to 4 branches of a
FlexRay network. The TJA1085 is compliant with the FlexRay electrical physical layer
specification V3.0.1 (see Ref. 1).
Several TJA1085 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 TJA1085 supports low-power management by
offering bus wake-up capability along with battery supply and voltage regulator control.
The TJA1085 meets industry standards for EMC/ESD performance and provides
enhanced bus error detection, low current consumption and unmatched asymmetric delay
performance.
The TJA1085 also fulfills the JASPAR requirements as defined by the Japanese car
industry.
2. Features and benefits
2.1 General
Compliant with FlexRay Electrical Physicalhttp://www.DataSheet4U.net/ Layer specification V3.0.1.
Fulfills JASPAR requirements
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
TJA1085 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
datasheet pdf - http://www.DataSheet4U.net/


TJA1085 데이터시트, 핀배열, 회로
NXP Semiconductors
TJA1085
FlexRay active star coupler
Local wake-up via pin LWU
Wake-up source recognition
configurable per branch
Enhanced supply voltage monitoring on VIO, VCC, VBUF and VBAT
Auto I/O level adaptation to host controller supply voltage VIO
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 VIO or VCC when the TJA1085 is not
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 classeshttp://www.DataSheet4U.net/
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
3. Ordering information
Table 1. Ordering information
Type number Package
Name
Description
Version
TJA1085HN
HVQFN44 plastic thermal enhanced very thin quad flat package; no leads; 44 terminals; SOT1113-1
body 9 9 0.85 mm
TJA1085
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 23 October 2012
© NXP B.V. 2012. All rights reserved.
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datasheet pdf - http://www.DataSheet4U.net/




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