OPERATING POWER SUPPLY VOLTAGE
RANGE 4.8V
V
S
36V (40V FOR TRAN-
SIENTS)
REVERSE
SUPPLY
(BATTERY)
PRO-
TECTED DOWN TO V
S
-24V
STANDBY MODE WITH VERY LOW CURRENT
CONSUMPTION IS
SB
1
A @ V
CC
0.5V
MIN POSSIBLE BAUD RATE ACCORDING
TO ISO9141
130KBAUD
TTL COMPATIBLE TX INPUT
BIDIRECTIONAL K-I/O PIN WITH SUPPLY
VOLTAGE DEPENDENT INPUT THRESHOLD
OVERTEMPERATURE SHUT DOWN FUNC-
TION SELECTIVE TO K-I/O PIN
WIDE
INPUT
AND
OUTPUT
VOLTAGE
RANGE -24V
VK
VS
K OUTPUTCURRENT LIMITATION,TYPIK= 60mA
DEFINED OFF OUTPUT STATUS IN UNDER-
VOLTAGE CONDITION AND VS OR GND IN-
TERRUPTION
CONTROLLED OUTPUT SLOPE FOR LOW EMI
HIGH INPUT IMPEDANCE FOR OPEN VS
OR GND CONNECTION
DEFINED OUTPUT ON STATUS OF LO OR
RX FOR OPEN LI OR K INPUTS
DEFINED K OUTPUT OFF FOR TX INPUT
OPEN
INTEGRATED PULL UP RESISTORS FOR
TX, RX AND LO
EMI ROBUSTNESS OPTIMIZED
DESCRIPTION
The L9613B is a monolithic integrated circuit con-
taining medium speed data interface functions.
November 1999
TX
RX
LO
GND
LI
VS
VCC
K
1,75V
RTX
RLO
RRX
ILI
IK
OFF
IK SC
TjMON
-
+
-
+
-
+
BLOCK DIAGRAM
SO8
ORDERING NUMBERS: L9613B013TR (TAPE&REEL)
L9613B (TUBES)
L9613B
DATA INTERFACE
1/10
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
S
Supply Voltage
ISO transient t
400ms
-24 to +36
-24 to +40
V
V
V
CC
Stabilized Voltage
-24V to 7
V
dV
S
/dt
Supply Voltage Transient
-10 to +10
V/
s
V
LI,K
Pin voltage
-24 to V
S
V
V
LO, RX, TX
Pin voltage
-24 to V
CC
V
* max ESD voltages are +/-2KV with human body model C=100pF, R=1.5K
corresponds to maximum energy
THERMAL DATA
Symbol
Parameter
Min.
Typ.
Max.
Unit
T
JSDon
Temperature shutdown switch-on-threshold
160
200
C
T
JSDoff
Temperature shutdown switch-off-threshold
150
C
R
th(j-a)
Thermal steady state junction to ambient resistance
130
155
180
C/W
PIN FUNCTIONS
N.
Name
Description
1
RX
Output for K as input
2
LO
Output L comparator
3
VCC
Stabilized voltage supply
4
TX
Input for K as output
5
GND
Common GND
6
K
Bidirectional I/O
7
VS
Supply voltage
8
LI
Input L comparator
K
GND
LI
VS
5
6
7
8
TX
LO
VCC
RX 1
2
3
4
PIN CONNECTION
L9613B
2/10
ELECTRICAL CHARACTERISTICS (The electrical characteristics are valid within the below defined
Operating Conditions, unless otherwise specified).
The function is guaranteed by design until T
JSDon
temperature shutdown switch-on-threshold.
V
S
Supply voltage 4.8 V... 18 V
V
CC
Stabilized voltage
3 V... 7 V
T
J
Junction temperature
-40
C... 150
C
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
I
CC
Supply V
CC
Current
V
CC
5.5V
VLI, VTX = 0V
1.4
2.5
mA
VK
VK
high
VLI
VLI
high
VTX = V
CC
@ V
CC
5.5V
-5
40
150
A
IS
ON
Supply VS Current
VLI, VTX = 0V
3.5
10
mA
V
CC
= 0.5V
@ V
S
12V
3)
<1
50
A
IS
SB
V
CC
= 0.5V, see fig. 5
@ V
S
16V
100
A
VK
low
Input Voltage LOW State
RX output status LOW
-24
0.40VS
V
VK
high
Input Voltage HIGH State
RX output status HIGH
0.60VS
VS
V
VK
hys
Input Threshold Hysteresis
VK
high
- VK
low
V
S
8.0V
V
S
6.0V
0.2
0.08
0.05VS
1.0
V
V
IK
OFF
Input Current
VTX
VTX
high
V
S
, V
CC
0V or V
S
,
V
CC
= open or GND = open
-5
4
40
A
RK
ON
Output ON Impedance
@ V
S
6.5V
VTX
VTX
low
IK
7mA
1)
10
30
IK
SC
Short Circuit Current
V
S
6.5V
40
60
150
mA
VK
sat
Output Saturation Voltage
R
KO
= 1.5K
1
V
VTX
low
Input Voltage
LOW State
-24
1
V
VTX
high
Input Voltage
HIGH State
3.5
VCC
V
RRX
ON
RLO
ON
Output ON Impedance
VK
VK
low
; VLI
VLI
low
V
S
6.5V; I
RX,LO
1mA
40
90
VRX
sat
VLO
sat
Saturation Output Voltage
No external load
1
V
IRX
SC
ILO
SC
Output short circuit current
V
S
6.5V
9
20
50
mA
RTX
Input pull up resistance
Output status = (HIGH)
T
A
85
C
-0.15V
VLO
VCC + 0.15V
-0.15V
VRX
VCC + 0.15V
5
10
18
k
RTX
Input pull up resistance
-0.15V
VTX
VCC + 0.15V
T
amb
125
C
10
20
40
k
VLI
low
Input voltage LOW state
LO output status LOW
-24
0.40VS
V
VLI
high
Input voltage HIGH state
LO output status HIGH
0.60VS
VS
V
ILI
Input current
VS, VCC
0V or
VS, VCC = open or
GND = open
-5
4
40
A
Note 1) For external supplied output currents lower than this value a series protection diode can become active. See also Fig. 4 and 5.
L9613B
3/10
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
C
KI,LO,RX
Internal output capacities
20
pF
f
LI-LO
f
K-RX
f
TX-K
Transmission frequency
9V < V
S
< 16V,
(external loads)
T
min
20
R
KO
C
K
- K
line
130
kHz
f
LI-LO
f
K-RX
f
TX-K
Rise Time
for the definition of tr, tf see
FIG. 1,
2)
0.4
2
s
Fall Time
9V < V
S
< 16V,
(external loads)
T
min
20
R
KO
C
K
- K
line
0.4
2
s
t
OFF,LI-LO
t
OFF,K-RX
t
OFF,TX-K
Switch OFF time
for the definition of tr, tf see
FIG. 1
1.3
3
s
t
ON,LI-LO
t
ON,K-RX
t
ON,TX-K
Switch ON time
9V < V
S
< 16V,
(external loads)
Tmin
20
R
KO
C
K
- K
line
1.3
3
s
td
SB ON
td
SB OFF
Standby reaction time
VTX = 0V, IK
7mA
VLI = 0V, 9V < VS < 16V
see FIG. 2
10
20
20
40
s
s
Note 2) Speed limitation related to external capacitance C
extRX, LO
and internal impedance C
L O, RX
, RLO, RRX for rise time.
t
r
= R
L O, RX
(C
LO,RX
+ C
ext RX, LO
)
1.38.
Note 3) In case of spikes on VCC
0.5V KOUT will be switched On for typical 10
s which represents the standby td
SB
reaction time.
FUNCTIONAL DESCRIPTION
The L9613B is a monolithic bus driver designed to provide bidirectional serial communication in automo-
tive applications.
The device provides a bidirectional link, called K, to the V
Bat
related diagnosis bus. It also includes a
separate comparator L which is also able to be linked to the V
Bat
bus. The input TX and output RX of K
are related to VCC with her integrated pull up resistances. Also the L comparator output LO has a pull
up resistance connected to VCC.
All VBat bus defined inputs LI and K have supply voltage dependent thresholds together with sufficent
hysteresis to suppress line spikes. These pins are protected against overvoltages, shorts to GND and
VS and can also be driven beyond VS and GND. These features are also given for TX, RX and LI only
taking into account the behaviour of the internal pull up resistances. The thermal shut down function
switches OFF the K output if the chip temperature increases above the thermal shut down threshold. To
reactivate K again the chip temperature must decrease below the K switch ON temp. To achieve no fault
for VS undervoltage conditions the outputs will be switched OFF and stay at high impedance. The de-
vice is also protected against reverse battery condition. During lack of VS or GND all pins shows high
impedance characteristic. To realize a lack of the VS related bus line LI and K the outputs LO and RX
shows defined ON status. Supressing all 4 classes of "Schaffner" signals (Schaffner 1; 2; 3a,b; 4) all
pins can be load with short energy pulses of max.
0.2mJ. All these features together with a high possi-
ble baud rate >130Kbaud, controlled output slopes for low EMI, a wide power supply voltage range and
a real standby function with zero power consumption IS
SB typ
1
A during system depowering VCC
0.5V make this device high efficient for automotive bus system.
After wake up of the system from SB condition the first output signal will have an additional delay time
td
typ
5
s.
The typical output voltage behaviour for the K, LO, RX outputs as a function of the output current is
shown in Fig.5. Fig.6 shows a waveform of the output signal when the low level changes from R
ON
I
OUT
to I
OUT
2
R
ON
+ U
BE
state. This variation occurs due to too low output current or after a negative tran-
sient forced to the output or to the supply voltage line.
L9613B
4/10
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