iC-HD7

QUAD DIFFERENTIAL LINE DRIVER

Rev A6, Page 2/8

DESCRIPTION

iC-HD7 is a robust line driver for industrial 5 V and

24 V applications with four complementary output

channels.

For signal lines with a characteristic impedance of

30 to 140 Ω the integrated line adapter, optimized

to 75 Ω, minimizes ringing effects which arise when

there is no line termination.

At a supply of 24 V the push-pull driver stages typi-

cally provide 200 mA to discharge the line and also

have a low saturation voltage (of typically 200 mV

with a 40 mA low-side load). The outputs are current

limited and short-circuit-proof, shutting down with ex-

cessive temperature.

For bus applications the driver stages can be

switched to high impedance by a high at input NEN.

The driver stage inputs have a Schmitt trigger char-

acteristic and are compatible with CMOS and TTL

levels.

For test purposes the temperature monitor can be

deactivated by applying a voltage of greater than 12 V

to input NEN.

The device contains internal ESD protection circuitry.

PACKAGING INFORMATION SO16N, TSSOP20

PIN CONFIGURATION SO16N

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

I1

O1

NO1

nc

NO2

O2

I2

GND

VB

I4

O4

NO4

NEN

NO3

O3

I3

PIN FUNCTIONS

No. Name Function

1 I1

Input 1

2 O1

Driver Output 1

3 NO1

Inverted Driver Output 1

4 nc

5 NO2

Inverted Driver Output 2

6 O2

Driver Output 2

7 I2

Input 2

8 GND

Ground

9 I3

Input 3

10 O3

Driver Output 3

11 NO3

Inverted Driver Output 3

12 NEN

Function Input

(low signal enables driver outputs)

13 NO4

Inverted Driver Output 4

14 O4

Driver Output 4

15 I4

Input 4

16 VB

+4.5 to +35 V Supply Voltage