TJA1051T Fast Delivery |IC PHOENIX CO.,LIMITED

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TJA1051T
High-speed CAN transceiver
1. General description
The TJA1051 is a high-speed CAN transceiver that 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 (up to 1 Mbit/s) CAN applications in the
automotive industry, providing differential transmit and receive capability to (a
microcontroller with) a CAN protocol controller.
The TJA1051 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 TJA1050. 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 TJA1051T/3 and TJA1051TK/3 can be interfaced directly to microcontrollers with
supply voltages from 3Vto5V
These features make the TJA1051 an excellent choice for all types of HS-CAN networks,
in nodes that do not require a standby mode with wake-up capability via the bus.
2. Features and benefits
2.1 General Fully ISO 11898-2 compliant Suitable for 12 V and 24 V systems Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI) VIO input on TJA1051T/3 and TJA1051TK/3 allows for direct interfacing with 3Vto5V
microcontrollers (available in SO8 and very small HVSON8 packages respectively) EN input on TJA1051T/E allows the microcontroller to switch the transceiver to a very
low-current Off mode Available in SO8 and HVSON8 packages Leadless HVSON8 package (3.0 mm× 3.0 mm) with improved Automated Optical
Inspection (AOI) capability Dark green product (halogen free and Restriction of Hazardous Substances (RoHS)
compliant)
2.2 Low-power management Functional behavior predictable under all supply conditions Transceiver disengages from the bus when not powered up (zero load)
TJA1051
High-speed CAN transceiver
Rev. 6 — 25 March 2011 Product data sheet
NXP Semiconductors TJA1051
High-speed CAN transceiver
2.3 Protection High ElectroStatic Discharge (ESD) handling capability on the bus pins Bus pins protected against transients in automotive environments Transmit Data (TXD) dominant time-out function Undervoltage detection on pins VCC and VIO Thermally protected
3. Quick reference data
4. Ordering information
[1] TJA1051T/3 and TJA1051TK/3 with VIO pin; TJA1051T/E with EN pin.
Table 1. Quick reference data
VCC supply voltage 4.5 - 5.5 V
Vuvd(VCC) undervoltage detection
voltage on pin VCC
3.5- 4.5V
ICC supply current Silent mode 0.1 1 2.5 mA
Normal mode; bus
recessive
2.5 5 10 mA
Normal mode; bus
dominant 50 70 mA
VESD electrostatic discharge
voltage
IEC 61000-4-2 at pins
CANH and CANL −8- +8 kV
VCANH voltage on pin CANH no time limit; DC
limiting value
−58 - +58 V
VCANL voltage on pin CANL no time limit; DC limiting value −58 - +58 V
Tvj virtual junction
temperature −40 - +150 °C
Table 2. Ordering information
TJA1051T SO8 plastic small outline package; 8 leads; body width 3.9 mm SOT96-1
TJA1051T/3[1] SO8 plastic small outline package; 8 leads; body width 3.9 mm SOT96-1
TJA1051T/E[1] SO8 plastic small outline package; 8 leads; body width 3.9 mm SOT96-1
TJA1051TK/3[1] HVSON8 plastic thermal enhanced very thin small outline package; no leads; terminals; body 3 × 3 × 0.85 mm
SOT782-1
NXP Semiconductors TJA1051
High-speed CAN transceiver
5. Block diagram
NXP Semiconductors TJA1051
High-speed CAN transceiver
6. Pinning information
6.1 Pinning
6.2 Pin description
Table 3. Pin description
TXD 1 transmit data input
GND 2 ground
VCC 3 supply voltage
RXD 4 receive data output; reads out data from the bus lines
n.c. 5 not connected; in TJA1051T version 5 enable control input; TJA1051T/E only
VIO 5 supply voltage for I/O level adapter; TJA1051T/3 and TJA1051TK/3 only
CANL 6 LOW-level CAN bus line
CANH 7 HIGH-level CAN bus line 8 Silent mode control input
NXP Semiconductors TJA1051
High-speed CAN transceiver
7. Functional description
The TJA1051 is a high-speed CAN stand-alone transceiver with Silent mode. It combines
the functionality of the TJA1050 transceiver with improved EMC and ESD handling
capability. Improved slope control and high DC handling capability on the bus pins
provides additional application flexibility.
The TJA1051 is available in three versions, distinguished only by the function of pin 5: The TJA1051T is 100 % backwards compatible with the TJA1050 The TJA1051T/3 and TJA1051TK/3 allow for direct interfacing to microcontrollers with
supply voltages down to 3 V The TJA1051T/E allows the transceiver to be switched to a very low-current Off mode.
7.1 Operating modes
The TJA1051 supports two operating modes, Normal and Silent, which are selected via
pin S. An additional Off mode is supported in the TJA1051T/E via pin EN. See Table 4 for
a description of the operating modes under normal supply conditions.
[1] Only available on the TJA1051T/E.
[2] LOW if the CAN bus is dominant, HIGH if the CAN bus is recessive.
[3] ‘X’ = don’t care.
7.1.1 Normal mode
A LOW level on pin S selects Normal mode. In this mode, the transceiver is able to
transmit and receive data via the bus lines CANH and CANL (see Figure 1 for the block
diagram). The differential receiver converts the analog data on the bus lines into digital
data which is output to pin RXD. The slope of the output signals on the bus lines is
controlled and optimized in a way that guarantees the lowest possible ElectroMagnetic
Emission (EME).
7.1.2 Silent mode
A HIGH level on pin S selects Silent mode. In Silent mode the transmitter is disabled,
releasing the bus pins to recessive state. All other IC functions, including the receiver,
continue to operate as in Normal mode. Silent mode can be used to prevent a faulty CAN
controller from disrupting all network communications.
Table 4. Operating modes
Normal HIGH LOW LOW dominant active[2]
HIGH LOW HIGH recessive active[2]
Silent HIGH HIGH X[3] recessive active[2]
Off[1] LOW X[3] X[3] floating floating
NXP Semiconductors TJA1051
High-speed CAN transceiver
7.1.3 Off mode
A LOW level on pin EN of TJA1051T/E selects Off mode. In Off mode the entire
transceiver is disabled, allowing the microcontroller to save power when CAN
communication is not required. The bus pins are floating in Off mode, making the
transceiver invisible to the rest of the network.
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). The TXD dominant time-out timer is reset when pin TXD is set HIGH.
The TXD dominant time-out time also defines the minimum possible bit rate of 40 kbit/s.
7.2.2 Internal biasing of TXD, S and EN input pins
Pin TXD has an internal pull-up to VIO and pins S and EN (TJA1051T/E) have internal
pull-downs to GND. This ensures a safe, defined state in case one or more of these pins
is left floating.
7.2.3 Undervoltage detection on pins VCC and VIO
Should VCC or VIO drop below their respective undervoltage detection levels (Vuvd(VCC)
and Vuvd (VIO); see Table 7), the transceiver will switch off and disengage from the bus
(zero load) until VCC and VIO have recovered.
7.2.4 Overtemperature protection
The output drivers are protected against overtemperature conditions. If the virtual junction
temperature exceeds the shutdown junction temperature, Tj(sd), the output drivers will be
disabled until the virtual junction temperature falls below Tj(sd) and TXD becomes
recessive again. Including the TXD condition ensures that output driver oscillations due to
temperature drift are avoided.
7.3 VIO supply pin
There are three versions of the TJA1051 available, only differing in the function of a single
pin. Pin 5 is either an enable control input (EN), a VIO supply pin or is not connected.
Pin VIO on the TJA1051T/3 and TJA1051TK/3 should be connected to the microcontroller
supply voltage (see Figure 6). This will adjust the signal levels of pins TXD, RXD and S to
the I/O levels of the microcontroller. For versions of the TJA1051 without a VIO pin, the VIO
input is internally connected to VCC. This sets the signal levels of pins TXD, RXD and S to
levels compatible with 5 V microcontrollers.
NXP Semiconductors TJA1051
High-speed CAN transceiver
8. Limiting values
[1] Verified by an external test house to ensure pins CANH and CANL can withstand ISO 7637 part 3 automotive transient test pulses 1, 2a,
3a and 3b.
[2] IEC 61000-4-2 (150 pF, 330Ω).
[3] ESD performance of pins CANH and CANL according to IEC 61000-4-2 (150 pF, 330 Ω) has been be verified by an external test house.
The result is equal to or better than ±8 kV (unaided).
[4] Human Body Model (HBM): according to AEC-Q100-002 (100 pF, 1.5 kΩ).
[5] Machine Model (MM): according to AEC-Q100-003 (200 pF, 0.75 μH, 10 Ω).
[6] Charged Device Model (CDM): according to AEC-Q100-011 (field Induced charge; 4 pF). The classification level is C5 (> 1000 V).
[7] In accordance with IEC 60747-1. An alternative definition of virtual junction temperature 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).
9. Thermal characteristics
Table 5. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). All voltages are referenced to GND. voltage on pin x no time limit; DC value
on pins CANH and CANL −58 +58 V
on any other pin −0.3 +7 V
Vtrt transient voltage on pins CANH and CANL [1] −150 +100 V
VESD electrostatic discharge voltage IEC 61000-4-2 [2]
at pins CANH and CANL [3] −8+8 kV
HBM [4]
at pins CANH and CANL −8+8 kV
at any other pin −4+4 kV [5]
at any pin −300 +300 V
CDM [6]
at corner pins −750 +750 V
at any pin −500 +500 V
Tvj virtual junction temperature [7] −40 +150 °C
Tstg storage temperature −55 +150 °C
Table 6. Thermal characteristics
According to IEC 60747-1.
Rth(vj-a) thermal resistance from virtual junction to ambient SO8 package; in free air 155 K/W
HVSON8 package; in free air 55 K/W
NXP Semiconductors TJA1051
High-speed CAN transceiver
10. Static characteristicsTable 7. Static characteristics
Tvj= −40 °C to +150 °C; VCC= 4.5 V to 5.5 V; VIO= 2.8 V to 5.5V[1] =60 Ω unless specified otherwise; All voltages are
defined with respect to ground; Positive currents flow into the IC[2]
Supply; pin VCC
VCC supply voltage 4.5 - 5.5 V
ICC supply current Off mode (TJA1051T/E) 1 5 8 μA
Silent mode 0.1 1 2.5 mA
Normal mode
recessive; VTXD =VIO -5 10 mA
dominant; VTXD =0V - 50 70 mA
Vuvd(VCC) undervoltage detection
voltage on pin VCC
3.5 - 4.5 V
I/O level adapter supply; pin VIO[1]
VIO supply voltage on pin VIO 2.8 - 5.5 V
IIO supply current on pin VIO Normal and Silent modes
recessive; VTXD =VIO -80 250 μA
dominant; VTXD=0V - 350 500 μA
Vuvd(VIO) undervoltage detection
voltage on pin VIO
1.3 - 2.7 V
Mode control inputs; pins S and EN[3]
VIH HIGH-level input voltage [4] 0.7VIO -VIO +0.3V
VIL LOW-level input voltage −0.3 - 0.3VIO V
IIH HIGH-level input current VS =VIO; VEN =VIO 14 10 μA
IIL LOW-level input current VS =0V; VEN =0 V −10 +1 μA
CAN transmit data input; pin TXD
VIH HIGH-level input voltage [4] 0.7VIO -VIO +0.3V
VIL LOW-level input voltage −0.3 - +0.3VIO V
IIH HIGH-level input current VTXD =VIO −50 +5 μA
IIL LOW-level input current Normal mode; VTXD =0V −260 −150 −30 μA input capacitance [5] -5 10 pF
CAN receive data output; pin RXD
IOH HIGH-level output current VRXD =VIO− 0.4 V; VIO =VCC −8 −3 −1mA
IOL LOW-level output current VRXD= 0.4 V; bus dominant 2 5 12 mA
Bus lines; pins CANH and CANL
VO(dom) dominant output voltage VTXD =0V; tpin CANH 2.75 3.5 4.5 V
pin CANL 0.5 1.5 2.25 V
Vdom(TX)sym transmitter dominant voltage
symmetry
Vdom(TX)sym = VCC− VCANH− VCANL −400 0 +400 mV
NXP Semiconductors TJA1051
High-speed CAN transceiver
[1] Only TJA1051T/3 and TJA1051TK/3 have a VIO pin. In transceivers without a VIO pin, the VIO input is internally connected to VCC.
[2] All parameters are guaranteed over the virtual junction temperature range by design. Factory testing uses correlated test conditions to
cover the specified temperature and power supply voltage range.
[3] Only TJA1051T/E has an EN pin.
[4] Maximum value assumes VCC VIO, the maximum value will be VCC + 0.3 V.
[5] Not tested in production; guaranteed by design.
[6] Vcm(CAN) is the common mode voltage of CANH and CANL.
11. Dynamic characteristics
VO(dif)bus bus differential output voltage VTXD =0V; tVCC= 4.75V to 5.25V =45Ωto65Ω
1.5 - 3 V
VTXD =VIO; recessive; no load −50 - +50 mV
VO(rec) recessive output voltage Normal and Silent modes;
VTXD =VIO; no load
20.5VCC 3V
Vth(RX)dif differential receiver threshold
voltage
Normal and Silent modes
Vcm(CAN)[6]= −30Vto +30V
0.5 0.7 0.9 V
Vhys(RX)dif differential receiver hysteresis
voltage
Normal and Silent modes
Vcm(CAN)= −30Vto +30V 120 200 mV
IO(dom) dominant output current VTXD =0V; tpin CANH; VCANH =0V −100 −70 −40 mA
pin CANL; VCANL=5V / 40 V 40 70 100 mA
IO(rec) recessive output current Normal and Silent modes; VTXD =VIO
VCANH =VCANL= −27 V to +32V −5- +5 mA leakage current VCC =VIO =0V;
VCANH =VCANL =5V −50 +5 μA input resistance 9 15 28 kΩ
ΔRi input resistance deviation between VCANH and VCANL −10 +1 %
Ri(dif) differential input resistance 19 30 52 kΩ
Ci(cm) common-mode input
capacitance
[5] -- 20 pF
Ci(dif) differential input capacitance [5] -- 10 pF
Temperature protection
Tj(sd) shutdown junction
temperature
[5]- 190 - °C
Table 7. Static characteristics …continued
Tvj= −40 °C to +150 °C; VCC= 4.5 V to 5.5 V; VIO= 2.8 V to 5.5V[1] =60 Ω unless specified otherwise; All voltages are
defined with respect to ground; Positive currents flow into the IC[2].
Table 8. Dynamic characteristics
Tvj= −40 °C to +150 °C; VCC= 4.5 V to 5.5 V; VIO= 2.8 V to 5.5V[1] =60 Ω unless specified otherwise. All voltages are
defined with respect to ground. Positive currents flow into theIC.[2]
Transceiver timing; pins CANH, CANL, TXD and RXD; see Figure 3 and Figure4
td(TXD-busdom) delay time from TXD to bus dominant Normal mode - 65 - ns
td(TXD-busrec) delay time from TXD to bus recessive Normal mode - 90 - ns
NXP Semiconductors TJA1051
High-speed CAN transceiver
[1] Only TJA1051T/3 and TJA1051TK/3 have a VIO pin. In transceivers without a VIO pin, the VIO input is internally connected to VCC.
[2] All parameters are guaranteed over the virtual junction temperature range by design. Factory testing uses correlated test conditions to
cover the specified temperature and power supply voltage range.
td(busdom-RXD) delay time from bus dominant to RXD Normal and Silent modes - 60 - ns
td(busrec-RXD) delay time from bus recessive to RXD Normal and Silent modes - 65 - ns
tPD(TXD-RXD) propagation delay from TXD to RXD Normal mode; versions
with VIO pin - 250 ns
Normal mode; all other
versions - 220 ns
tto(dom)TXD TXD dominant time-out time VTXD=0 V; Normal mode 0.3 1 5 ms
Table 8. Dynamic characteristics …continued
Tvj= −40 °C to +150 °C; VCC= 4.5 V to 5.5 V; VIO= 2.8 V to 5.5V[1] =60 Ω unless specified otherwise. All voltages are
defined with respect to ground. Positive currents flow into theIC.[2]
NXP Semiconductors TJA1051
High-speed CAN transceiver
12. Application information

Partno	Mfg	Dc	Qty	Available	Descript
TJA1051T	NXP	N/a	2500	avai	High-speed CAN transceiver