CAN总线收发器芯片TJA1050T数据手册.pdf-资料库

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INTEGRATED CIRCUITS DATA SHEET TJA1050 High speed CAN transceiver Product speciﬁcation Supersedes data of 2002 May 16 2003 Oct 22

Philips Semiconductors High speed CAN transceiver FEATURES • Fully compatible with the “ISO 11898” standard • High speed (up to 1 Mbaud) • Very low ElectroMagnetic Emission (EME) • Differential receiver with wide common-mode range for high ElectroMagnetic Immunity (EMI) • An unpowered node does not disturb the bus lines • Transmit Data (TXD) dominant time-out function • Silent mode in which the transmitter is disabled • Bus pins protected against transients in an automotive environment • Input levels compatible with 3.3 V and 5 V devices • Thermally protected • Short-circuit proof to battery and to ground • At least 110 nodes can be connected. QUICK REFERENCE DATA Product speciﬁcation TJA1050 GENERAL DESCRIPTION The TJA1050 is the interface between the Controller Area Network (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 third Philips high-speed CAN transceiver after the PCA82C250 and the PCA82C251. The most important differences are: • Much lower electromagnetic emission due to optimal matching of the output signals CANH and CANL • Improved behaviour in case of an unpowered node • No standby mode. This makes the TJA1050 eminently suitable for use in nodes that are in a power-down situation in partially powered networks. SYMBOL VCC VCANH VCANL Vi(dif)(bus) tPD(TXD-RXD) Tvj PARAMETER CONDITIONS supply voltage DC voltage at pin CANH DC voltage at pin CANL differential bus input voltage propagation delay TXD to RXD virtual junction temperature 0 < VCC < 5.25 V; no time limit 0 < VCC < 5.25 V; no time limit dominant VS = 0 V; see Fig.7 - 40 MIN. MAX. UNIT 4.75 - 27 - 27 1.5 5.25 +40 +40 3 250 +150 V V V 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; die dimensions 1700 · 1280 · 380 m m VERSION SOT96-1 2003 Oct 22 2 - - -

VCC 3 TEMPERATURE PROTECTION DRIVER Product 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 30 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 or silent mode 2003 Oct 22 3 handbook, halfpage TXD GND VCC RXD 1 2 3 4 8 S 7 6 5 CANH CANL Vref TJA1050T MGS375 Fig.2 Pin configuration.

Philips Semiconductors High speed CAN transceiver Product speciﬁcation TJA1050 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 60 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 supply 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 pin TXD goes HIGH. The thermal protection circuit is particularly needed when a bus line short-circuits. The pins CANH and CANL are protected from automotive electrical transients (according to “ISO 7637”; see Fig.4). Control pin S allows two operating modes to be selected: high-speed mode or silent mode. The 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 not connected. However, to ensure EMI performance in applications using only the high-speed mode, it is recommended that pin S is connected to ground. 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 and can be used to prevent network communication from being blocked, due to a CAN controller which is out of control. A ‘TXD dominant time-out’ timer circuit prevents the bus lines being driven to a permanent dominant state (blocking all network communication) if pin TXD is forced permanently LOW by a hardware and/or software application failure. The timer is triggered by a negative edge on pin TXD. If the duration of the LOW-level on pin 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 pin TXD. Table 1 Function table of the CAN transceiver; X = don’t care VCC 4.75 V to 5.25 V TXD LOW 4.75 V to 5.25 V 4.75 V to 5.25 V <2 V (not powered) 2 V < VCC < 4.75 V X HIGH (or ﬂoating) X >2 V S LOW (or ﬂoating) HIGH X X X CANH HIGH 0.5VCC 0.5VCC CANL LOW 0.5VCC 0.5VCC BUS STATE dominant recessive recessive 0 V < VCANH < VCC 0 V < VCANH < VCC 0 V < VCANL < VCC 0 V < VCANL < VCC recessive recessive RXD LOW HIGH HIGH X X 2003 Oct 22 4

Philips Semiconductors High speed CAN transceiver Product speciﬁcation TJA1050 LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 60134). All voltages are referenced to GND (pin 2). Positive currents ﬂow into the IC. SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT VCC VCANH VCANL VTXD VRXD Vref VS Vtrt(CANH) Vtrt(CANL) Vesd Tstg Tvj supply voltage DC voltage at pin CANH DC voltage at pin CANL 0 < VCC < 5.25 V; no time limit 0 < VCC < 5.25 V; no time limit DC voltage at pin TXD DC voltage at pin RXD DC voltage at pin Vref DC voltage at pin S note 1 transient voltage at pin CANH transient voltage at pin CANL note 1 electrostatic discharge voltage at all pins note 2 note 3 storage temperature virtual junction temperature note 4 - 0.3 - 27 - 27 - 0.3 - 0.3 - 0.3 - 0.3 - 200 - 200 - 4000 - 200 - 55 - 40 +6 +40 +40 V V V VCC + 0.3 V VCC + 0.3 V VCC + 0.3 V VCC + 0.3 V +200 V V +200 V +4000 V +200 C +150 C +150 Notes 1. The waveforms of the applied transients shall be in accordance with “ISO7637 part1”, test pulses 1, 2, 3a and 3b (see Fig.4). 2. Human body model: C = 100 pF and R = 1.5 kW 3. Machine model: C = 200 pF, R = 10 W 4. . and L = 0.75 m H. In accordance with “IEC60747-1”. An alternative definition of Tvj is: Tvj = Tamb + P · Rth(vj-a), where Rth(vj-a) is a fixed value to be used for the calculation of Tvj. The rating for Tvj limits the allowable combinations of power dissipation (P) and ambient temperature (Tamb). THERMAL CHARACTERISTICS According to IEC 60747-1. SYMBOL PARAMETER CONDITIONS VALUE Rth(vj-a) Rth(vj-s) thermal resistance from junction to ambient in SO8 package thermal resistance from junction to substrate of bare die in free air in free air 145 50 UNIT K/W K/W QUALITY SPECIFICATION Quality specification “SNW-FQ-611partD” is applicable. 2003 Oct 22 5

Philips Semiconductors High speed CAN transceiver Product speciﬁcation TJA1050 CHARACTERISTICS VCC = 4.75 V to 5.25 V; Tvj = - 40 C to +150 C; RL = 60 W GND (pin 2); positive currents ﬂow into the IC; see notes 1 and 2. unless speciﬁed otherwise; all voltages are referenced to SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply (pin VCC) ICC supply current dominant; VTXD = 0 V recessive; VTXD = VCC 25 2.5 50 5 75 10 mA mA HIGH-level input voltage LOW-level input voltage HIGH-level input current LOW-level input current input capacitance Transmitter data input (pin TXD) VIH VIL IIH IIL Ci Mode select input (pin S) VIH VIL IIH IIL Receiver data output (pin RXD) IOH IOL Reference voltage output (pin Vref) Vref Bus lines (pins CANH and CANL) Vo(reces)(CANH) HIGH-level input voltage LOW-level input voltage HIGH-level input current LOW-level input current HIGH-level output current LOW-level output current reference output voltage Vo(reces)(CANL) Io(reces)(CANH) Io(reces)(CANL) Vo(dom)(CANH) Vo(dom)(CANL) Vi(dif)(bus) recessive bus voltage at pin CANH recessive bus voltage at pin CANL recessive output current at pin CANH recessive output current at pin CANL dominant output voltage at pin CANH dominant output voltage at pin CANL differential bus input voltage (VCANH - VCANL) output recessive output dominant VTXD = VCC VTXD = 0 V not tested silent mode high-speed mode VS = 2 V VS = 0.8 V VRXD = 0.7VCC VRXD = 0.45 V 2.0 - 0.3 - 5 - 100 2.0 - 0.3 20 15 - 2 2 0 - 200 5 30 30 - 6 8.5 VCC + 0.3 V +0.8 V m A +5 m A - 300 10 pF VCC + 0.3 V +0.8 V m A 50 m A 45 - 15 20 - 50 m A < IVref < +50 m A 0.45VCC 0.5VCC 0.55VCC VTXD = VCC; no load VTXD = VCC; no load - 27 V < VCANH < +32 V; 0 V < VCC < 5.25 V - 27 V < VCANL < +32 V; 0 V < VCC < 5.25 V VTXD = 0 V VTXD = 0 V VTXD = 0 V; dominant; 42.5 W < RL < 60 W VTXD = VCC; recessive; no load 2.0 2.0 - 2.0 - 2.0 3.0 0.5 1.5 - 50 2.5 2.5 3.6 1.4 2.25 0 3.0 3.0 +2.5 +2.5 4.25 1.75 3.0 +50 mA mA V V V mA mA V V V mV 2003 Oct 22 6 - - - - - - -

Philips Semiconductors High speed CAN transceiver Product speciﬁcation TJA1050 PARAMETER CONDITIONS MIN. TYP. MAX. UNIT - 95 100 0.9 mA mA V 100 mV 35 35 +3 75 20 20 10 250 250 kW kW % kW pF pF pF m A m A C ns ns ns ns m s SYMBOL Io(sc)(CANH) Io(sc)(CANL) Vi(dif)(th) short-circuit output current at pin CANH short-circuit output current at pin CANL differential receiver threshold voltage Vi(dif)(hys) differential receiver input voltage hysteresis VCANH = 0 V; VTXD = 0 V - 45 VCANL = 36 V; VTXD = 0 V - 12 V < VCANL < +12 V; - 12 V < VCANH < +12 V; see Fig.5 - 12 V < VCANL < +12 V; - 12 V < VCANH < +12 V; see Fig.5 Ri(cm)(CANH) Ri(cm)(CANL) Ri(cm)(m) Ri(dif) Ci(CANH) Ci(CANL) Ci(dif) ILI(CANH) ILI(CANL) VCANH = VCANL common mode input resistance at pin CANH common mode input resistance at pin CANL matching between pin CANH and pin CANL common mode input resistance differential input resistance input capacitance at pin CANH input capacitance at pin CANL differential input capacitance VTXD = VCC; not tested input leakage current at pin CANH input leakage current at pin CANL VTXD = VCC; not tested VTXD = VCC; not tested VCC = 0 V; VCANH = 5 V 100 VCC = 0 V; VCANL = 5 V 100 45 0.5 50 15 15 - 3 25 - 70 70 0.7 70 25 25 0 50 7.5 7.5 3.75 170 170 Thermal shutdown Tj(sd) shutdown junction temperature Timing characteristics (see Figs.6 and 7) td(TXD-BUSon) td(TXD-BUSoff) td(BUSon-RXD) td(BUSoff-RXD) tdom(TXD) delay TXD to bus active delay TXD to bus inactive delay bus active to RXD delay bus inactive to RXD TXD dominant time for time-out VS = 0 V VS = 0 V VS = 0 V VS = 0 V VTXD = 0 V 155 165 180 25 25 20 45 250 55 60 50 95 450 110 95 110 155 750 Notes 1. All parameters are guaranteed over the virtual junction temperature range by design, but only 100 % tested at 125 C ambient temperature for dies on wafer level and in addition to this 100 % tested at 25 C ambient temperature for cased products, unless speciﬁed otherwise. 2. For bare die, all parameters are only guaranteed if the backside of the bare die is connected to ground. 2003 Oct 22 7 - - -

Product speciﬁcation TJA1050 Philips Semiconductors High speed CAN transceiver APPLICATION AND TEST INFORMATION handbook, full pagewidth +5 V TX0 SJA1000 CAN CONTROLLER RX0 MICRO- CONTROLLER 100 nF VCC 3 TJA1050 2 8 GND S TXD Vref RXD 1 5 4 47 nF 60 W 60 W CANH CANL 7 6 CAN BUS LINE 60 W 60 W 47 nF MGS380 Fig.3 Application information. handbook, full pagewidth +5 V 100 nF VCC 3 TJA1050 2 8 GND S 7 6 TXD Vref RXD 1 5 4 15 pF CANH 1 nF CANL 1 nF TRANSIENT GENERATOR MGS379 The waveforms of the applied transients shall be in accordance with “ISO 7637 part 1”, test pulses 1, 2, 3a and 3b. Fig.4 Test circuit for automotive transients. 2003 Oct 22 8

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