Philips AU5780 Datasheet
INTEGRATED CIRCUITS
AU5780
SAE/J1850/VPW transceiver
Product specification
Supersedes data of 1997 Dec 22
1998 Jun 30
Philips Semiconductors Product specification
AU5780SAE/J1850/VPW transceiver
FEA TURES
•Supports SAE/J1850 VPW standard for in-vehicle class B
multiplexing
•Bus speed 10.4 kbps nominal
DESCRIPTION
The AU5780 is a line transceiver being primarily intended for
in-vehicle multiplex applications. It provides interfacing between a
link controller and the physical bus wire. The device supports the
SAE/J1850 VPWM standard with a nominal bus speed of 10.4 kbps.
•Drive capability 32 bus nodes
•Low RFI due to output waveshaping with adjustable slew rate
PIN CONFIGURATION
•Direct battery operation with protection against +50V load dump,
jump start and reverse battery
•Bus terminals proof against automotive transients up to
–200V/+200V
BATT
1
8
GND
•Thermal overload protection
•Very low bus idle power consumption
•Diagnostic loop-back mode
R/F
2
TX
AU5780
3
7
6
BUS_OUT
/LB
•4X mode (41.6 kbps) reception capability
•ESD protected to 9 KV on bus and battery pins
•8-pin SOIC
QUICK REFERENCE DA TA
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
BATT.op
T
A
V
BATT.ld
I
BATT.lp
V
B
V
BOH
–I
BO.LIM
V
BI
t
P
V
SR
Operating supply voltage 6 12 24 V
Operating ambient temperature –40 +125 °C
Battery voltage load dump; 1s +50 V
Bus idle supply current V
Bus voltage 0 < V
Bus output voltage 300Ω < RL < 1.6kΩ 7.3 8.0 V
Bus output source current 0V < VBO < +8.5V 47 mA
Bus input threshold 3.65 4.1 V
Propagation delay Tx to Rx 16 24 µs
Bus output slew rate Rs = 56 kΩ 0.3 V/µs
=12V 200 µA
BATT
< 24V –20 +20 V
BATT
RX
4
SO8
5
BUS_IN
SL01196
ORDERING INFORMATION
DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG #
SO8: 8-pin plastic small outline package; Packed in tubes –40 to +125°C AU5780D SOT96-1
SO8: 8-pin plastic small outline package; Packed on tape & reel –40 to +125°C AU5780D–T SOT96-1
1998 Jun 30 853–2087 19650
2
Philips Semiconductors Product specification
AU5780SAE/J1850/VPW transceiver
BLOCK DIAGRAM
BATTERY (+12V)
BATT
1
LOW–POWER
TIMER
TX
2
Rs
Vcc
Rd
R/F
/LB
RX
3
6
4
TX–
BUFFER
INPUT
BUFFER
VOLTAGE
REFERENCE
VOLTAGE
REFERENCE
TEMP.
PROTECTION
OUTPUT
BUFFER
INPUT
FILTER
7
5
BUS_OUT
Rb
Rf
BUS_IN
1998 Jun 30
AU5780
8
GND
SL01195
3
Loading...