Philips Semiconductors
SAE/J1850/VPW transceiver
Product specification
AU5780
FEATURES
• Supports SAE/J1850 VPW standard for in-vehicle class B
multiplexing
• Bus speed 10.4 kbps nominal
• Drive capability 32 bus nodes
• Low RFI due to output waveshaping with adjustable slew rate
• Direct battery operation with protection against +50V load dump,
jump start and reverse battery
• Bus terminals proof against automotive transients up to
–200V/+200V
• Thermal overload protection
• Very low bus idle power consumption
• Diagnostic loop-back mode
• 4X mode (41.6 kbps) reception capability
• ESD protected to 9 KV on bus and battery pins
• 8-pin SOIC
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.
PIN CONFIGURATION
BATT 1
TX 2
R/F 3
RX 4
AU5780
8 GND
7 BUS_OUT
6 /LB
SO8
5 BUS_IN
SL01196
QUICK REFERENCE DATA
SYMBOL
PARAMETER
VBATT.op
TA
VBATT.ld
IBATT.lp
VB
VBOH
–IBO.LIM
VBI
tP
VSR
Operating supply voltage
Operating ambient temperature
Battery voltage
Bus idle supply current
Bus voltage
Bus output voltage
Bus output source current
Bus input threshold
Propagation delay
Bus output slew rate
CONDITIONS
load dump; 1s
VBATT=12V
0 < VBATT < 24V
300Ω < RL < 1.6kΩ
0V < VBO < +8.5V
Tx to Rx
Rs = 56 kΩ
MIN.
6
–40
–20
7.3
3.65
16
TYP.
12
0.3
MAX.
24
+125
+50
200
+20
8.0
47
4.1
24
UNIT
V
°C
V
µA
V
V
mA
V
µs
V/µs
ORDERING INFORMATION
DESCRIPTION
SO8: 8-pin plastic small outline package; Packed in tubes
SO8: 8-pin plastic small outline package; Packed on tape & reel
TEMPERATURE RANGE
–40 to +125°C
–40 to +125°C
ORDER CODE
AU5780D
AU5780D–T
DWG #
SOT96-1
SOT96-1
1998 Jun 30
2
853–2087 19650