Data Sheet

9

Rev. 1.0

2017-09-14

TLE7268

Dual LIN 2.2 / SAE J2602 Transceiver

Functional description

4.1

Operating modes

The transceivers of the TLE7268 have the following major operation modes (see Figure 4):

•Normal Operation mode

•Standby mode

•Sleep mode

The transceivers can operate independently of each other regarding operational mode, for example one

transceiver can be in Normal Operation mode while the other is in Sleep mode or in Standby mode. The only

feature that introduces a dependency between the two transceivers is the voltage regulator control output,

the INH pin. INH is floating only when both transceivers are in Sleep mode. INH “high” immediately indicates

a mode change of any transceiver, which has been triggered by bus wake-up or by a “high” signal on either ENx

input.

Figure 4

Operation mode state diagram

BUSx wake-up

Normal Operation mode

Standby mode

Sleep mode

Power-up

LIN BUSx OFF

INH „high“

ENx „low“

LIN BUSx OFF

INH „floating“ 1

)

ENx „low“

LIN BUSx ON

INH „high“

ENx „high“

- INH is “floating” only if both transceivers are in Sleep mode

ENx

ENx

ENx

BUSx

wake-up