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1. General description

The TJA1049 high-speed CAN transceiver provides an interface between a Controller

Area Network (CAN) protocol controller and the physical two-wire CAN bus. The

transceiver is designed for high-speed CAN applications in the automotive industry,

supplying the differential transmit and receive capability to (a microcontroller with) a CAN

protocol controller.

The TJA1049 belongs to the third generation of high-speed CAN transceivers from NXP

Semiconductors, offering significant improvements over first- and second-generation

devices such as the TJA1040. It offers improved ElectroMagnetic Compatibility (EMC)

and ElectroStatic Discharge (ESD) performance, and also features:

• Ideal passive behavior to the CAN bus when the supply voltage is off

• A very low-current Standby mode with bus wake-up capability

• TJA1049T/3 and TJA1049TK/3 can be interfaced directly to microcontrollers with

supply voltages from 3Vto5V

The TJA1049 implements the CAN physical layer as defined in the current ISO11898

standard (ISO11898-2:2003, ISO11898-5:2007). Pending the release of the updated

version of ISO11898-2 including CAN FD, additional timing parameters defining loop

delay symmetry are specified. This implementation enables reliable communication in the

CAN FD fast phase at data rates up to 2 Mbit/s.

These features make the TJA1049 an excellent choice for all types of HS-CAN networks,

in nodes that require a low-power mode with wake-up capability via the CAN bus.

2. Features and benefits

2.1 General

 Fully ISO 11898-2:2003 and ISO 11898-5:2007 compliant

 Loop delay symmetry timing enables reliable communication at data rates up to

2 Mbit/s in the CAN FD fast phase

 Suitable for 12 V and 24 V systems

 Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI)

 V

input on TJA1049T/3 and TJA1049TK/3 allows for direct interfacing with 3 V to 5 V

microcontrollers

 SPLIT voltage output on TJA1049T and TJA1049TK for stabilizing recessive bus level

 Both variants available in SO8 and HVSON8 packages

 Leadless HVSON8 package (3.0 mm  3.0 mm) with improved Automated Optical

Inspection (AOI) capability

TJA1049

High-speed CAN transceiver with Standby mode

Rev. 4 — 15 January 2015 Product data sheet

Summary of content (24 pages)

PAGE 1
TJA1049 High-speed CAN transceiver with Standby mode Rev. 4 — 15 January 2015 Product data sheet 1. General description The TJA1049 high-speed CAN transceiver provides an interface between a Controller Area Network (CAN) protocol controller and the physical two-wire CAN bus. The transceiver is designed for high-speed CAN applications in the automotive industry, supplying the differential transmit and receive capability to (a microcontroller with) a CAN protocol controller.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode  AEC-Q100 qualified  Dark green product (halogen free and Restriction of Hazardous Substances (RoHS) compliant) 2.2 Low-power management  Very low-current Standby mode with host and bus wake-up capability  Functional behavior predictable under all supply conditions  Transceiver disengages from the bus when not powered up (zero load) 2.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode 4. Ordering information Table 2. Ordering information Type number[1] Package Name Description Version TJA1049T SO8 plastic small outline package; 8 leads; body width 3.9 mm SOT96-1 TJA1049TK HVSON8 plastic thermal enhanced very thin small outline package; no leads; 8 terminals; body 3  3  0.85 mm SOT782-1 TJA1049T/3 SO8 plastic small outline package; 8 leads; body width 3.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode 5. Block diagram VIO VCC 5 3 VCC VIO TXD TJA1049 TEMPERATURE PROTECTION (1) 7 1 TIME-OUT SLOPE CONTROL AND DRIVER MODE CONTROL SPLIT 6 CANH CANL VIO(1) STB RXD 8 5 SPLIT MUX AND DRIVER 4 WAKE-UP FILTER 2 015aaa164 GND (1) In a transceiver with a SPLIT pin, the VIO input is internally connected to VCC. Fig 1.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode 6. Pinning information 6.1 Pinning TJA1049 7-$ 7. WHUPLQDO LQGH[ DUHD TXD 1 8 STB 7;' GND 2 7 CANH *1' 67% &$1+ VCC 3 6 CANL 9&& &$1/ 5;' 63/,7 RXD 4 5 SPLIT DDD 7UDQVSDUHQW WRS YLHZ 015aaa166 a. TJA1049T: SO8 package b.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode 7. Functional description The TJA1049 is a HS-CAN stand-alone transceiver with Standby mode. It combines the functionality of the PCA82C250, PCA82C251 and TJA1040 transceivers with improved EMC and ESD handling capability and quiescent current performance. Improved slope control and high DC handling capability on the bus pins provide additional application flexibility.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode 7.2 Fail-safe features 7.2.1 TXD dominant time-out function A ‘TXD dominant time-out’ timer is started when pin TXD is set LOW. If the LOW state on pin TXD persists for longer than tto(dom)TXD, the transmitter is disabled, releasing the bus lines to recessive state. This function prevents a hardware and/or software application failure from driving the bus lines to a permanent dominant state (blocking all network communications).
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode VCC TJA1049 CANH 60 Ω R VSPLIT = 0.5 VCC in normal mode; otherwise floating SPLIT 60 Ω R CANL GND Fig 3. 015aaa167 Stabilization circuitry and application for version with SPLIT pin 7.3.2 VIO supply pin Pin VIO on the TJA1049T/3 and TJA1049TK/3 should be connected to the microcontroller supply voltage (see Figure 7). This will adjust the signal levels of pins TXD, RXD and STB to the I/O levels of the microcontroller.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode 8. Limiting values Table 5. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). All voltages are referenced to GND.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode 10. Static characteristics Table 7. Static characteristics Tvj = 40 C to +150 C; VCC = 4.75 V to 5.25 V; VIO = 2.8 V to 5.5 V[1]; RL = 60  unless specified otherwise; All voltages are defined with respect to ground. Positive currents flow into the IC.[2] Symbol Parameter Conditions Min Typ Max Unit 4.75 - 5.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode Table 7. Static characteristics …continued Tvj = 40 C to +150 C; VCC = 4.75 V to 5.25 V; VIO = 2.8 V to 5.5 V[1]; RL = 60  unless specified otherwise; All voltages are defined with respect to ground. Positive currents flow into the IC.[2] Symbol Parameter Conditions Min Typ Max Unit pin CANH 2.75 3.5 4.5 V pin CANL 0.5 1.5 2.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode [3] Maximum value assumes VCC < VIO; if VCC > VIO, the maximum value will be VCC + 0.3 V. [4] Not tested in production; guaranteed by design. [5] Vcm(CAN) is the common mode voltage of CANH and CANL. [6] For TJA1049T/3 and TJA1049TK/3: values valid when VIO = 4.5 V to 5.5 V; when VIO = 2.8 V to 4.5 V, values valid when Vcm(CAN) = 12 V to +12 V. 11. Dynamic characteristics Table 8.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode HIGH TXD LOW CANH CANL dominant 0.9 V VO(dif)(bus) 0.5 V recessive HIGH 0.7VIO RXD 0.3VIO LOW td(TXD-busrec) td(TXD-busdom) td(busrec-RXD) td(busdom-RXD) tPD(TXD-RXD) Fig 4. tPD(TXD-RXD) 015aaa025 CAN transceiver timing diagram 7;' [ WELW 7;' WELW 7;' 5;' WELW 5;' DDD Fig 5.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode 12. Application information 12.1 Application diagrams 5V BAT VCC CANH CANH SPLIT STB Pyy TJA1049 TXD CANL CANL VDD Pxx RXD MICROCONTROLLER TX0 RX0 GND GND Fig 6. 015aaa168 Typical application with TJA1049T or TJA1049TK and a 5 V microcontroller. %$7 9 ,1+ 9 9&& 9,2 67% &$1+ &$1+ 7-$ 7 7-$ 7.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode 13. Test information +5 V 47 μF 100 nF VCC TXD CANH TJA1049 SPLIT RXD GND RL 100 pF CANL STB 15 pF 015aaa165 (1) For versions with a VIO pin (TJA1049T/3 and TJA1049TK/3), the VIO pin is connected to pin VCC. Fig 8. Timing test circuit for CAN transceiver 13.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode 14.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode 15. Handling information All input and output pins are protected against ElectroStatic Discharge (ESD) under normal handling. When handling ensure that the appropriate precautions are taken as described in JESD625-A or equivalent standards. 16. Soldering of SMD packages This text provides a very brief insight into a complex technology.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode • Process issues, such as application of adhesive and flux, clinching of leads, board transport, the solder wave parameters, and the time during which components are exposed to the wave • Solder bath specifications, including temperature and impurities 16.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode maximum peak temperature = MSL limit, damage level temperature minimum peak temperature = minimum soldering temperature peak temperature time 001aac844 MSL: Moisture Sensitivity Level Fig 11. Temperature profiles for large and small components For further information on temperature profiles, refer to Application Note AN10365 “Surface mount reflow soldering description”. 17.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode 18. Revision history Table 11. Revision history Document ID Release date Data sheet status Change notice Supersedes TJA1049 v.4 20150115 Product data sheet - TJA1049 v.3 Modifications • • • • • • • • • • Section 1: text revised (1st paragraph); paragraph added Section 2.1: text revised (1st item), features added Table 1: measurements conditions changed: VCANH, VCANL, VSPLIT Table 3: Table note 1: text revised Section 7.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode 19. Legal information 19.1 Data sheet status Document status[1][2] Product status[3] Definition Objective [short] data sheet Development This document contains data from the objective specification for product development. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. Product [short] data sheet Production This document contains the product specification.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode No offer to sell or license — Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. Translations — A non-English (translated) version of a document is for reference only.
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TJA1049 NXP Semiconductors High-speed CAN transceiver with Standby mode 21. Contents 1 2 2.1 2.2 2.3 3 4 5 6 6.1 6.2 7 7.1 7.1.1 7.1.2 7.2 7.2.1 7.2.2 7.2.3 7.2.4 7.2.5 7.3 7.3.1 7.3.2 8 9 10 11 12 12.1 12.2 13 13.1 14 15 16 16.1 16.2 16.3 16.4 17 18 19 19.1 General description . . . . . . . . . . . . . . . . . . . . . . 1 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Low-power management . . . . . . . . . . . . .