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부품번호 AU5783D-T 기능
기능 J1850/VPW transceiver with supply control function
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AU5783D-T 데이터시트, 핀배열, 회로
INTEGRATED CIRCUITS
AU5783
J1850/VPW transceiver with
supply control function
Objective specification
1999 May 11
Philips
Semiconductors




AU5783D-T pdf, 반도체, 판매, 대치품
Philips Semiconductors
J1850/VPW transceiver with supply control function
Objective specification
AU5783
PINNING
Pin configuration
R/F 1
GND 2
4X/LOOP 3
NSTB 4
TX 5
RX 6
N.C. 7
14 GND
13 N.C.
12 BUS
AU5783
11 LOAD
10 INH
9 LWAKE
SO14
8
BAT
SL01225
Figure 2. Pin configuration
Pin description
SYMBOL PIN
R/F 1
GND
4X/LOOP
2
3
NSTB
4
TX
RX
N.C.
BAT
LWAKE
INH
5
6
7
8
9
10
LOAD
BUS
N.C.
GND
11
12
13
14
DESCRIPTION
Rise/fall time control input; connect to
ground potential via a resistor
Ground
Tx mode control input; low: normal mode;
high: 4X mode; float: loopback
Network STandBy power control input;
low: transmit function disabled (low power
modes); high: transmit function enabled
Transmit data input; low: transmitter
passive; high: transmitter active
Receive data output; low: active bus
condition detected; high: otherwise
Not connected
Battery supply input, 12V nominal
Local wake-up input, edge sensitive
Activity indication flag (inhibit) output high
side driver; e.g., to control a voltage
regulator. Active high enables the
regulator
Bus load in/output
Bus line transmit/receive input/output,
active high side driver
Not connected
Ground
FUNCTIONAL DESCRIPTION
The AU5783 is an integrated line transceiver IC that interfaces an
SAE/J1850 protocol controller IC to the vehicle’s multiplex bus line.
It is primarily intended for automotive “Class B” multiplexing
applications in passenger cars using VPW (Variable Pulse Width)
modulated signals with a nominal transmission speed of 10.4 kbit/s.
The device provides transmit and receive capability as well as
protection to a J1850 electronic module.
A J1850 link controller feeds the transmit data stream to the
transceiver’s TX input. The AU5783 transceiver waveshapes the TX
data input signal so as to minimize electromagnetic emission. The
bus output signal features controlled rise & fall characteristic
including rounded shape. A resistance being connected to the R/F
control input sets the bus output slew rate.
The LOAD output is connected to the physical bus line via an
external load resistor Rld. The load resistor pulls the bus line to
ground potential being the default state e.g. when no transmitter
outputs an active state. This output ensures the J1850 network will
not be affected by a potential loss of ground condition at an
individual electronic control unit.
The AU5783 includes a bus receiver with filter function to minimize
susceptibility against interference. The logic state of the J1850 bus
signal is indicated at the RX output being connected to the J1850
link controller.
The AU5783 also provides advanced low-power modes to help
minimize ignition-off power consumption of an electronic control unit.
The bus receiver function is kept alive in the low-power modes. If an
active state is being detected on the bus line this will be indicated
via the RX output. By default the AU5783 enters the low-power
standby mode when the mode control inputs NSTB and 4X/LOOP
are not driven.
Ignition-off current draw can be reduced further by turning off the
voltage regulator being typically provided in an electronic control
unit. This is supported by the activity indication function of the
AU5783. In this application the activity indication flag INH will control
external devices such as a voltage regulator. To turn-off the INH flag
and thus the voltage regulator, the go to sleep command needs to
be applied to the Network Standby power control input,
e.g., NSTB = 0. The INH output is turned off after the sleep time-out
period thereby, reducing the power consumption of an electronic
control unit to an extremely low level.
The activity indication flag INH will be turned on again upon
detection of a remote wake-up condition (i.e. bus activity) or upon
detection of a local wake-up condition or a respective command
from the microcontroller. A local wake-up condition is detected when
an edge occurs at the wake-up input LWAKE. The INH flag will also
be turned on upon detection of a high input level at the mode control
input NSTB. Activation of the INH output enables external devices
e.g., a voltage regulator. This condition will power-up logic devices
e.g., a microcontroller in order to perform appropriate action,
e.g., activation of the AU5783 and the J1850 network.
The AU5783 provides a high-speed data transmission mode where
the bus output waveshape function is disabled. In this mode transmit
signals are output as fast as possible thus allowing higher data
rates, e.g. the so-called 4X mode with 41.6 kbit/s nominal speed.
The AU5783 also provides a loop-back mode for diagnostic
purpose, e.g. self-test of an electronic control unit. In loop-back
mode the bus transmit and receive functions are disabled thus
1999 May 11
4

4페이지










AU5783D-T 전자부품, 판매, 대치품
Philips Semiconductors
J1850/VPW transceiver with supply control function
Objective specification
AU5783
DC ELECTRICAL CHARACTERISTICS
7V < VBAT < 16V; –40 °C < Tamb < +125 °C; 250W < RL < 1.6 k; 1.4 k< Rld < 12 k;
–2V < Vbus < +9V; NSTB = 5V; 4X/LOOP = 5V; Rs = 56 k; RX connected to +5V via Rd = 3.9 k; INH loaded with 100 kto GND;
LWAKE connected to BAT via 10 kresistor; all voltages are referenced to pin 14 (GND); positive currents flow into the IC;
typical values reflect the approximate average value at VBAT = 13V and Tamb = 25 °C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
Pin BAT & thermal shutdown
IBAT.sl
IBAT.sb
IBAT.p
IBAT.wl
IBAT.fl
Tsd
Sleep mode supply current
Standby mode supply current
Supply current; passive state
Supply current; weak load
Supply current; full load
Thermal shutdown
temperature
Note 6
Note 6
TX = 0V; LWAKE = 0V
TX = 5V, RL = 1.38 k, Note 7
TX = 5V, RL = 250
Note 7
155
90
210
3
16
45
190
Thys Thermal shutdown hysteresis Note 7
Pins TX, NSTB
5 15
Vih High level input voltage
Vil Low level input voltage
Iihtx TX high level input current
Iihnstb
NSTB high level input current
Iil Low level input current
Pin 4X/LOOP
VTX = 5V
VNSTB = 5V
Vi = 0V
2.7
50
10
–2
0.9
200
50
+2
Vih High level input voltage (High NSTB = 5V
Speed Mode)
2.7
Iih
High level input current
V4X = 5V, NSTB = 5V
Vilb Mid level input voltage (Loop NSTB = 5V
back operation)
50
1.3
200
1.9
Iilb Loopback mode input current NSTB = 5V
Vil
Low level input voltage
NSTB = 5V
(Normal Mode)
–10
+10
+0.7
–Iil
Low level input current
V4X = 0V, NSTB = 5V
–Iils
Low level input current in
V4X = 0V, NSTB = 0V
standby and sleep mode
50
–5
200
+5
Pin LWAKE
Vi_wh
Vi_Wl
–II_w
Pin INH
Local wake-up high
Local wake-up low
Low level input current
NSTB = 0V
NSTB = 0V
VLWAKE = 0V
3.9
5
2.5
25
–Ioh_inh
–Iol_inh
Vbat_POR
INH high level output current
INH off-state output leakage
Power-on reset release
voltage; Battery voltage
threshold for setting INH
output
VINH = VBAT – 1V;
4.9V < VBAT < 16V
VINH = 0V; NSTB = 0V
NSTB = 1V, BUS = 0V,
VBAT = 3.5V, verify INH = 0;
VBAT = 4.4V, verify INH = 1
120
–5
3.5
500
+5
4.4
Pin RX
Vol_rx
Low level output voltage
IRX = 1.6 mA, BUS = 7V,
all modes
0
0.45
Iol_rx
Ioh_rx
Low level output current
High level output leakage
VRX = 5V, BUS = 7V
VRX = 5V, BUS = 0V, all modes
2
–10
20
+10
UNIT
µA
µA
mA
mA
mA
°C
°C
V
V
µA
µA
µA
V
µA
V
µA
V
µA
µA
V
V
µA
µA
µA
V
V
mA
µA
1999 May 11
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AU5783D-T

J1850/VPW transceiver with supply control function

NXP Semiconductors
NXP Semiconductors

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