iC-DL

3-CHANNEL DIFFERENTIAL LINE DRIVER

Rev B1, Page 2/9

DESCRIPTION

iC-DL is a fast line driver with six independent chan-

nels and integrated impedance adaptation for 30 to

140 Ω lines.

Channels are paired for differential 3-channel oper-

ation by a high signal at the DIFF input, providing

differential output signals for the three inputs E1, E3

and E5. All inputs are compatible with CMOS and

TTL levels.

The push-pull output stages have a driver power

of typically 200 mA from 24 V and are short-circuit-

proof and current-limited, shutting down with exces-

sive temperature. For bus applications the output

stages can be switched to high impedance using in-

put ENA.

iC-DL monitors supply voltages VB and VCC and the

chip temperature, switching all output stages to high

impedance in the event of error and set NER activ

low. In addition, the device also monitors voltage

differences at the pins VB1, VB2 and VB3 and gen-

erates an error signal if the absolut value exceeds

0.75 V.

The open-drain output NER allows the device to be

wired-ORed to the relevant NER error outputs of

other iC-DLs. Via input TNER the message outputs

of other ICs can be extended to generate system er-

ror messages. NER switches to high impedance if

supply voltage VCC ceases to be applied.

The device is protected against ESD.

PACKAGES QFN28 5 x 5 mm² JEDEC MO-220-VHHD-1

DL

code...

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21

22

23

24

25

26

27

28

1

2

3

4

5

6

7

8

9

10

11 12 13 14

20

19

18

17

16

15

PIN FUNCTIONS

No. Name Function

1 E1

Input Channel 1

2 E2

Input Channel 2

3 E3

Input Channel 3

4 n.c.

PIN FUNCTIONS

No. Name Function

5 E4

Input Channel 4

6 E5

Input Channel 5

7 E6

Input Channel 6

8 VCC

+5 V Supply

9 n.c.

10 TNER Error Input, low active

11 NER

Error Output, active low

12 A6

Output Channel 6

13 GND4 Ground

14 VB3

+4.5 ... 40 V Power Supply

15 A5

Output Channel 5

16 GND3 Ground

17 A4

Output Channel 4

18 VB2

+4.5 ... 40 V Power Supply

19 A3

Output Channel 3

20 GND2 Ground

21 A2

Output Channel 2

22 VB1

+4.5 ... 40 V Power Supply

23 GND1 Ground

24 A1

Output Channel 1

25 n.c.

26 ENA

Enable Input, high active

27 n.c.

28 DIFF

Differential Mode Input, high active

The pins VB1, VB2 and VB3 must be connected to the same driver supply voltage VB. The pins GND1, GND2,

GND3 and GND4 must be connected to GND. To improve heat dissipation, the thermal pad at the bottom of the

package should be joined to an extended copper area which must have GND potential.