iC-DX
preliminar y
Rev A3, Page 7/10
UNIVERSAL DIGITAL SENSOR OUTPUT DRIVER
OPERATION MODES
The iC-DX can be operated in High-Side (PNP-
Switch), Low-Side (NPN-Switch) and Push-Pull switch
mode. Figure 4 shows the high-side operation where
IN pin must be kept high and the OE pin controls the
switch. Figure 5 shows the low-side operation where
IN pin must be kept low and the OE pin controls the
switch. Figure 6 shows the push-pull operation where
OE pin must be kept high and the IN pin controls the
switch.
VB
..30V
VB
REG
VREF
High Side Switch
+
VOUT
CVB
1μF
5V
<150
C
-
R Load
36V
OUT
CVOUT
100nF..
DIGITAL INPUT
OE
OUT
CHEN
&
36V
GND
IN
&
iC-DX
GND
Low Side Switch
GND
Figure 5: Configuration as Low-Side (NPN-Switch)
Output Table. Low-side mode (NPN-Switch)
OE IN OUT
Mode
L
L Z (H)
Low-Side, passive pull up
H L
L
Low-Side, active pull down
Table 5: Output Function table Fig. 5. Low-side mode
(NPN-Switch) with external pull-up.
VB
VB
..30V
VB
REG
VREF
High Side Switch
+
VOUT
CVB
1μF
5V
<150
C
-
CVOUT
100nF..
DIGITAL INPUT
OE
36V
OUT
OUT
CHEN
&
36V
GND
IN
&
R Load
..30V
VB
iC-DX
REG
VREF
GND
Low Side Switch
High Side Switch
GND
+
VOUT
CVB
1μF
5V
<150
C
-
CVOUT
100nF..
36V
OUT
Figure 4: Configuration as High-Side (PNP-Switch)
CHEN
DIGITAL INPUT
OE
&
36V
IN
&
GND
iC-DX
GND
Low Side Switch
GND
Figure 6: Configuration as Push-Pull
Output Table. High-side mode (PNP-Switch)
OE IN OUT
Mode
L H Z (L) High-Side, passive pull down
H H
H
High-Side, active pull up
Table 4: Output Function table Fig. 4. High-side mode
(PNP-Switch) with external pull-down.
Output Table. Push-Pull mode
OE IN OUT
Mode
H L
L
Push-Pull, active pull down
H H
H
Push-Pull, active pull up
Table 6: Output Function table Fig. 6. Push-Pull mode
TIMING DESCRIPTION
The iC-DX has a built-in spurious pulse suppression
that prevents short (undesired) pulses at the input pins
from reaching the output. Every pulse at OE or IN
pins shorter than 1.6 µs (cf. Electrical Characteristics
No. 306) will be ignored and the output will not re-
act. The minimum required pulse length to be sure
that the output reacts is 4 µs (cf. Electrical Characteris-
tics No. 307). That means that every pulse longer than
4 µs will be propagated to the output but with an addi-
tional propagation delay of 1.2 µs maximum. The re-
sulting maximum propagation delay is 5.2 µs (cf. Elec-
trical Characteristics No. 305).
ICHAUS [ IC-HAUS GMBH ]
