LI

LO

TX

K

RX

t d t ON

LI - L O

t d

t ON

TX - K

OF F

a c tiv e

a c t iv e

OF F

Figure 3: Typical timing for mode transitions.

Supressing all 4 classes of ”Schaffner” signals all

pins can be load with short energy pulses of max.

±0.2mJ. All these features together with a high

possible baud rate >50Kbaud, controlled output

slopes for low EMI, a wide power supply voltage

range and a very small quiescent current during

≤ 120µA,

and a real standby function with zero power con-

≤ 1µA during system depower-

≤ 0.5V make this device high efficient for

automotive bus system.

After wake up of the system from OFF or SB

condition the first output signal will have an addi-

≤ 5µs see also Fig. 3.

The typical output voltage behaviour for the K,

LO, RX outputs as a function of the output current

is shown in Fig.4. Fig.5 shows a waveform of the

output signal when the low level changes from

ation occurs due to too low output current or after

a negative transient forced to the output or to the

supply voltage line.

L9637

6/11