5/17

L9903

Input high level

3.5

V

Input hysteresis voltage 2)

1

V

Internal pull up resistance to

internal VCC 3)

102040

k

Ω

ISO interface, receiver output (RX)

Output voltage high stage

4.5

5.5

V

Internal pull up resistance

TX = HIGH;

510

20

k

Ω

ON resistance to ground

TX = LOW;

40

90

Ω

Output high delay time

Fig. 1

0.5

µs

Output low delay time

0.5

µs

ISO interface, K-line (K)

Input low level

-20V

0.45 ·

Input high level

0.55 ·

Input hysteresis voltage 2)

0.025·

0.8V

Input current

-5

25

µA

ON resistance to ground

10

30

Ω

Short circuit current

40

130

mA

Transmission frequency

60

100

kHz

2. not tested in production: guaranteed by design and verified in characterization

4. see page 18 for calculation of programmable cross conduction protection time

Rise time

External loads at K-line:

Ω pull up

26

µs

Fall time

26

µs

Switch high delay time

4

17

µs

Switch low delay time

4

17

µs

Short circuit detection time

TX = LOW

10

40

µs

Charge pump

Charge pump voltage

+7V

+10V

+10V

+14V

+14V

+14V

Table 5. Electrical Characteristcs (continued)

GND and currents are assumed positive, when current flows into the pin

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit