iC-HX
preliminar y
Rev A1, Page 1/11
3-CHANNEL DIFFERENTIAL COLD LINE DRIVER
FEATURES
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6 current-limited and short-circuit-proof push-pull drivers
Differential 3-channel operation selectable
Integrated impedance adaption for 30 to 140
Ω
lines
Wide power supply range from 4 to 40 V
200 mA output current (at VB = 24 V)
Low output saturation voltage (< 0.4 V at 30 mA)
Compatible with TIA/EIA standard RS-422
Tristate switching of outputs enables use in buses
Short switching times and high slew rates
Low static power dissipation
Dynamic power dissipation reduced with iC-xSwitch
Schmitt trigger inputs with pull-down resistors, TTL and CMOS
compatible; voltage-proof up to 40 V
Thermal shutdown with hysteresis
Error message trigger input TNER
Open-drain error output NER, active low with excessive chip
temperature and undervoltage at VCC or VB
Option: Extended temperature range from -40 to 125 °C
APPLICATIONS
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Line drivers for 24 V control
engineering
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Linear scales and encoders
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MR sensor systems
PACKAGES
QFN28 5 x 5 mm²
BLOCK DIAGRAM
+5V
VCC
ERROR DETECTION
+24V
trigger error
input
enable /
tristate
TNER
MODE
NER
1
ENA
error
output
PLC
&
UNDERVOLTAGE &
OVERTEMPERATURE
VB1
E1
1
A1
vert. 8V/div.
hor. 2µs/div
A2
E2
0
VB2
A3
1
E4
0
VB3
A5
1
A6
E6
0
E3
A4
E5
differential /
single ended
normal /
x-Switch
mode
DIFF
iC-HX
iC-xSWITCH
CONTROL
1
GND1
GND2
GND3
GND4
0
CX1
1µF
LINE 100 m
NXS
CX6
1µF
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ICHAUS [ IC-HAUS GMBH ]
