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
PIN CONFIGURATION QFN28 5 x 5 mm
2
28
27
26
25
24
23
22
1
2
3
4
5
6
7
21
20
19
DL
code...
...
8
9
10
11
12
13
14
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.
ICHAUS [ IC-HAUS GMBH ]
