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INTEGRATED CIRCUITS DATA SHEET TJA1050 High speed CAN transceiver Preliminary speciﬁcation File under Integrated Circuits, IC18 1999 Sep 27

Philips Semiconductors Preliminary speciﬁcation High speed CAN transceiver TJA1050 FEATURES • Fully compatible with the “ISO 11898” standard • High speed (up to 1 Mbaud) • Transmit Data (TXD) dominant time-out function • Bus lines protected against transients in an automotive environment • Silent mode in which the transmitter is disabled • Differential receiver with wide common-mode range for high ElectroMagnetic Immunity (EMI) • Input levels compatible with 3.3 V devices • Thermally protected • Short-circuit proof to battery and ground • An unpowered node does not disturb the bus lines • At least 110 nodes can be connected. QUICK REFERENCE DATA GENERAL DESCRIPTION The TJA1050 is the interface between the CAN protocol controller and the physical bus. The device provides differential transmit capability to the bus and differential receive capability to the CAN controller. The TJA1050 is the successor to the PCA82C250 high speed CAN transceiver. The most important improvements are: • Much lower ElectroMagnetic Emission (EME) due to optimal matching of the CANH and CANL output signals • Improved behaviour in case of an unpowered node. SYMBOL VCC VCANH VCANL Vi(dif)(bus) tPD(TXD-RXD) Tamb PARAMETER CONDITIONS supply voltage DC voltage at CANH DC voltage at CANL differential bus input voltage propagation delay TXD to RXD; see Fig.4 operating ambient temperature 0 < VCC < 5.25 V; no time limit dominant VS = 0 V MIN. MAX. UNIT 4.75 - 27 5.25 +40 V V 1.5 3 250 - 40 +125 V ns C ORDERING INFORMATION TYPE NUMBER TJA1050T TJA1050U NAME SO8 PACKAGE DESCRIPTION plastic small outline package; 8 leads; body width 3.9 mm bare die VERSION SOT96-1 1999 Sep 27 2 - - -

VCC 3 TEMPERATURE PROTECTION DRIVER Preliminary speciﬁcation TJA1050 7 25 kW 25 kW 6 CANH CANL Philips Semiconductors High speed CAN transceiver BLOCK DIAGRAM handbook, full pagewidth 8 S 200 m A 60 m A VCC GND TXD DOMINANT TIME-OUT TIMER 1 4 5 VCC GND TXD RXD Vref RECEIVER 0.5VCC GND REFERENCE VOLTAGE TJA1050 2 GND MGS374 Fig.1 Block diagram. PINNING SYMBOL TXD PIN 1 GND VCC RXD Vref CANL CANH S 2 3 4 5 6 7 8 DESCRIPTION transmit data input; reads in data from the CAN controller to the bus line drivers ground supply voltage receive data output; reads out data from the bus lines to the CAN controller reference voltage output LOW-level CAN bus line HIGH-level CAN bus line select input for high speed mode/silent mode handbook, halfpage TXD GND VCC RXD 1 2 3 4 8 S 7 6 5 CANH CANL Vref TJA1050T MGS375 Fig.2 Pin configuration. 1999 Sep 27 3

Preliminary speciﬁcation TJA1050 Control line S (pin 8) allows two operating modes to be selected; high speed mode or silent mode. High speed mode is the normal operating mode and is selected by connecting pin S to ground. It is the default mode if pin S is unconnected. In the silent mode, the transmitter is disabled. All other IC functions continue to operate. The silent mode is selected by connecting pin S to VCC. A ‘TXD Dominant Time-out’ timer circuit prevents the bus lines being driven to a permanent dominant state (blocking all network communication) if TXD is forced permanently LOW by a hardware and/or software application failure. The timer is triggered by a negative edge on TXD. If the duration of the LOW-level on TXD exceeds the internal timer value, the transmitter is disabled, driving the bus into a recessive state. The timer is reset by a positive edge on TXD. Philips Semiconductors High speed CAN transceiver FUNCTIONAL DESCRIPTION The TJA1050 is the interface between the CAN protocol controller and the physical bus. It is primarily intended for high speed automotive applications using baud rates from 40 kbaud up to 1 Mbaud. It provides differential transmit capability to the bus and differential receiver capability to the CAN protocol controller. It is fully compatible to the “ISO11898”standard. A current-limiting circuit protects the transmitter output stage from damage caused by accidental short-circuit to either positive or negative battery voltage, although power dissipation increases during this fault condition. A thermal protection circuit protects the IC from damage by switching off the transmitter if the junction temperature exceeds a value of approximately 165 C. Because the transmitter dissipates most of the power, the power dissipation and temperature of the IC is reduced. All other IC functions continue to operate. The transmitter off-state resets when TXD goes HIGH. The thermal protection circuit is particularly needed when a bus line short-circuits. The CANH and CANL lines are protected from automotive electrical transients (according to “ISO 7637”; see Fig.6) and are also protected from Electro-Static-Discharge (ESD) of up to 4 kV from the human body. Table 1 Function table of the CAN transceiver (X = don’t care) VCC 4.75 to 5.25 V 4.75 to 5.25 V 4.75 to 5.25 V TXD 0 X 1 (or ﬂoating) <2 V (not powered) 2 V < VCC < 4.75 V X >2 V S 0 (or ﬂoating) 1 X X X CANH HIGH 0.5 · VCC 0.5 · VCC CANL LOW 0.5 · VCC 0.5 · VCC 0 V

Philips Semiconductors High speed CAN transceiver Preliminary speciﬁcation TJA1050 LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). All voltages are referenced to GND (pin 2). Positive currents ﬂow into the IC. SYMBOL VCC VCANL, VCANH VTXD, VRXD, Vref and VS Vtrt(CANH), Vtrt(CANL) Vesd Tstg Tamb Tj PARAMETER CONDITIONS MIN. MAX. UNIT supply voltage DC voltage at CANL and CANH DC voltage at TXD, RXD, Vref and S transient voltage at CANH and CANL electrostatic discharge at CANH; CANL electrostatic discharge at TXD; VCC; RXD; Vref and S electrostatic discharge at all pins storage temperature operating ambient temperature junction temperature 0 < VCC < 5.25 V; no time limit time limit is 1 m s note 1 note 3 note 3 note 4 note 2 - 0.3 - 27 - 0.3 - 55 - 200 - 4 - 2 - 200 - 55 - 40 - 40 +5.25 +40 V V VCC + 0.3 V +55 +200 +4 +2 +200 +150 +125 +150 V V kV kV V C C C Notes 1. The waveforms of the applied transients shall be in accordance with “ISO7637part1”, test pulses 1, 2, 3a and 3b, 2. (see Fig.6). In accordance with “IEC747-1”. An alternative definition of Tj is: Tj = Tamb + P · Rth(j-a), where Rth(j-a) is a fixed value to be used for the calculation of Tj. The rating for Tj limits the allowable combinations of power dissipation (P) and ambient temperature (Tamb). 3. Human body model; C = 100 pF R = 1.5 kW. 4. Machine model; C = 200 pF R = 25 W . THERMAL CHARACTERISTICS According to IEC 747-1. SYMBOL Rth(j-a) PARAMETER CONDITIONS thermal resistance from junction to ambient; TJA1050T(SO8) in free air VALUE 160 UNIT K/W QUALITY SPECIFICATION Quality specification “SNW-FQ-611partD” is applicable. 1999 Sep 27 5

Philips Semiconductors High speed CAN transceiver Preliminary speciﬁcation TJA1050 CHARACTERISTICS VCC = 4.75 to 5.25 V; Tamb = - 40 to +125 C; RL = 60 W unless speciﬁed otherwise; all voltages are referenced to GND (pin 2); positive currents ﬂow into the IC; all parameters are guaranteed over the ambient temperature range by design, but only 100% tested at Tamb = 25 C unless speciﬁed otherwise. CONDITIONS PARAMETER SYMBOL MIN. TYP. MAX. UNIT HIGH-level input voltage LOW-level input voltage HIGH-level input current LOW-level input current TXD input capacitance HIGH-level input voltage LOW-level input voltage HIGH-level input current LOW-level input current HIGH-level output current LOW-level output current Supply (VCC) ICC supply current Transmitter data input (TXD) VIH VIL IIH IIL Ci(TXD) Mode select input (S) VIH VIL IIH IIL Receiver data output (RXD) IOH IOL Vref Vref Bus lines (CANH; CANL) VCANH(reces); VCANL(reces) Io(CANH)(reces); Io(CANL)(reces) recessive bus voltage recessive output current Vo(CANH) Vo(CANL) Vi(dif)(bus) CANH dominant output voltage CANL dominant output voltage differential bus input voltage (VCANH - VCANL) Io(sc)(CANH) Io(sc)(CANL) CANH short-circuit output current CANL short-circuit output current 1999 Sep 27 6 reference output voltage - 50 m A < IVref < 50 m A 0.45VCC 0.5VCC 0.55VCC dominant; VTXD = 0 V recessive; VTXD = VCC tbf tbf output recessive output dominant VTXD = VCC VTXD = 0 V not tested silent mode high speed mode VS = VCC VS = 0 V VRXD = 0.7 VCC VRXD = 0.45 V 2.0 - 0.3 - 30 - 100 2.0 - 0.3 30 - 30 tbf 2 0 - 200 60 0 tbf 8.5 VTXD = VCC; no load - 27 V < VCANH, VCANL < 32 V; 0 V < VCC < 5.25 V VTXD = 0 V VTXD = 0 V; 42.5 < RL < 60 W (dominant) VTXD = VCC; no load (recessive) VCANH = 0 V; VTXD = 0 V VCANL = 36 V; VTXD = 0 V 2.0 - 2.5 2.8 0.5 1.5 - 500 - 35 35 75 13 mA mA VCC + 0.3 V V +0.8 m A +30 - 300 m A pF tbf VCC + 0.3 V +0.8 V m A 100 m A +30 tbf 20 3.0 mA mA V V +2.5 mA 4.5 2.0 3.0 +50 - 95 150 V V V mV mA mA - - - - - - - - - - - - - - - -

Philips Semiconductors High speed CAN transceiver Preliminary speciﬁcation TJA1050 SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT V mV kW % kW pF pF m A C ns ns differential receiver threshold voltage differential receiver input voltage hysteresis CANH; CANL common mode input resistance matching between CANH and CANL common mode input resistance differential input resistance CANH; CANL input capacitance differential input capacitance CANH; CANL input leakage current - 12 V < VCANH, VCANL < 12 V; see Fig.5 see Fig.5 0.5 100 10 - 3 20 VCANH = VCANL VTXD = VCC; not tested VCC = 0 V; VCANH = VCANL = 5 V 0.7 25 50 0.9 200 50 +3 100 20 10 500 155 165 180 tbf tbf tbf tbf 150 100 Vdif(th) Vi(dif)(hys) Ri(cm)(CANH); Ri(cm)(CANL) Ri(cm)(m) Ri(dif) Ci(CANH); Ci(CANL) Ci(dif) ILI(CANH); ILI(CANL) Thermal shutdown Tj(sd) shutdown junction temperature Timing characteristics (see Figs 3 and 4) td(TXD-BUSon) td(TXD-BUSoff) td(BUSon-RXD) td(BUSoff-RXD) delay TXD to bus active delay TXD to bus inactive delay bus active to RXD delay bus inactive to RXD VS = 0 V 1999 Sep 27 7 - - - - - - - -

Philips Semiconductors High speed CAN transceiver TEST AND APPLICATION INFORMATION Preliminary speciﬁcation TJA1050 +5 V handbook, halfpage 47 m F 100 nF VCC 3 TJA1050 2 8 GND S TXD Vref RXD 1 5 4 15 pF CANH CANL 7 6 RL 60 W CL 100 pF MGS376 Fig.3 Test circuit for timing characteristics. handbook, full pagewidth TXD CANH CANL Vi(dif)(bus) (1) 0.9 V 0.5 V RXD 0.3VCC 0.7VCC HIGH LOW dominant (BUS on) recessive (BUS off) HIGH LOW (1) Vi(dif)(bus) = VCANH - VCANL td(TXD-BUSon) td(BUSon - RXD) td(TXD-BUSoff) td(BUSoff - RXD) tPD(TXD - RXD) tPD(TXD - RXD) MGS377 Fig.4 Timing diagram for AC characteristics. 1999 Sep 27 8

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