5/17

L9904

Input high level

3.5

V

Input hysteresis voltage 2)

1

V

Internal pull up resistance to

internal VCC 3)

10

20

40

k



ISO interface, receiver output (RX)

Output voltage high stage

4.5

5.5

V

Internal pull up resistance

TX = HIGH;

5

10

20

k



ON resistance to ground

TX = LOW;

40

90



Output high delay time

Fig. 1

0.5

s

Output low delay time

0.5

s

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

A

ON resistance to ground

10

30



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:

2

6

s

Fall time

2

6

s

Switch high delay time

4

17

s

Switch low delay time

4

17

s

Short circuit detection time

TX = LOW

10

40

s

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