Data Sheet Version 3.4

5

2002-10-08

TLE 6250

TLE 6250 V33

Application Information

Figure 4

Mode State Diagram

Both, the TLE 6250 G as well as the TLE 6250 C offer three different operation modes

(see Figure 4), controlled by the INH and RM pin for the TLE6250 and only by the INH

pin for the 6250 V33. In the normal mode the device is able to receive and to transmit

messages whereas in the receive-only mode signals at the TxD input are not transmitted

to the CAN bus. The receive-only mode can be used for diagnostic purposes as well as

to prevent the bus being blocked by a faulty permanent dominant TxD input signal. The

stand-by mode is a low power mode that disables both, the receiver as well as the

transmitter. For the TLE 6250 G V33 and TLE 6250 C V33 the receive only mode

feature is not available. The inhibit feature for this versions works in the same way as for

the 5V versions.

In case the receive-only feature is not used the RM pin has to be left open. When the

stand-by mode is not used the INH pin has to be connected to ground level in order to

switch the TLE 6250 in normal mode.

AED02924

Normal Mode

INH = 0

RM = 1

INH = 0

Receive-only Mode

RM = 0

INH = 1

Stand-by Mode

RM = 0 / 1

INH = 0

and RM = 0

INH = 1

INH = 1

INH = 0

and RM = 1

RM = 0

RM = 1

Normal Mode

INH = 0

Stand-by

Mode

INH = 1

INH=1

INH=0

5V Version

3.3V Version