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L9903
V
TXH
Input high level 3.5 V
V
TXh
Input hysteresis voltage 2) 1 V
R
TX
Internal pull up resistance to
internal VCC 3)
V
TX
= 0 10 20 40 k
ISO interface, receiver output (RX)
V
RXL
Output voltage high stage
TX = HIGH; I
RX
= 0; V
K
= V
VS
4.5 5.5 V
R
RX
Internal pull up resistance
to internal VCC
3)
TX = HIGH;
V
RX
= 0V
51020k
R
RXON
ON resistance to ground TX = LOW;
I
RX
= 1mA
40 90
t
RXH
Output high delay time Fig. 1 0.5 µs
t
RXL
Output low delay time 0.5 µs
ISO interface, K-line (K)
V
KL
Input low level -20V 0.45 ·
V
VS
V
KH
Input high level 0.55 ·
V
VS
V
VS
V
Kh
Input hysteresis voltage 2) 0.025·
V
VS
0.8V
I
KH
Input current V
TX
= HIGH -5 25 µA
R
KON
ON resistance to ground V
TX
= LOW; I
K
=10mA 10 30
I
KSC
Short circuit current V
TX
= LOW 40 130 mA
f
K
Transmission frequency 60 100 kHz
2. not tested in production: guaranteed by design and verified in characterization
3. Internal V
VCC
is 4.5V ... 5.5V
4. see page 18 for calculation of programmable cross conduction protection time
t
Kr
Rise time V
VS
= 13.5V; Fig. 1
External loads at K-line:
R
K
= 510 pull up
to V
VS
C
K
= 2.2nF to GND
26µs
t
Kf
Fall time 26µs
t
KH
Switch high delay time 4 17 µs
t
KL
Switch low delay time 4 17 µs
t
SH
Short circuit detection time V
VS
= 13.5V;
TX = LOW
V
K
> 0.55 · V
VS
10 40 µs
Charge pump
V
CP
Charge pump voltage V
VS
= 8V
V
VS
= 13.5V
V
VS
= 20V
V
VS
+7V
V
VS
+10V
V
VS
+10V
V
VS
+14V
V
VS
+14V
V
VS
+14V
Table 5.
Electrical Characteristcs
(continued)
(8V < V
VS
< 20V, V
EN
= HIGH, -40°C
T
J
150°C, unless otherwise specified. The voltages are refered to
GND and currents are assumed positive, when current flows into the pin
Symbol Parameter Test Condition Min. Typ. Max. Unit
