iC-DXC

DIGITAL SENSOR I/O DRIVER

Rev B2, Page 10/12

TIMING DESCRIPTION

The iC-DXC 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 NIN

pins shorter than 1.6 µs (cf. Electrical Characteristics

No. 306) will be ignored and the output will not react.

The minimum required pulse length to be sure that

the output reacts is 4 µs (cf. Electrical Characteristics

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 result-

ing maximum propagation delay is 5.2 µs (cf. Electrical

Characteristics No. 305).

MON

CFO

tpcf

tdre

OUT

NIN

NEP

tpio

EN

ttrig()

short-circuit

Figure 8: Timing diagram in push-pull operation

mode with OE high

High Side Switch

DIGITAL INPUT

VREF

REG

&

<150 C

&

CVB

1μF

CVOUT

100nF..

iC-DXC

FILT

NEP

EN

36V

Low Side Switch

36V

=1

+

++

-

+

-

OUT

5V

NIN

GND

VB

GND

VOUT

OE

VB

..30V

VRL

VRH

CFO

MON

=1

Figure 9: Block diagram with EN and NEP internal

signals

DESIGN REVIEW: Notes On Chip Functions

iC-DXC Z

No. Function, Parameter/Code

Description and Application Hints

1

Monitor output undefined during thermal shutdown During thermal shutdown, output of MON is unde-

fined and thus should not be evalutated

Table 7: Notes on chip functions regarding iC-DXC chip version Z and previous versions

iC-DXC Z1

No. Function, Parameter/Code

Description and Application Hints

1

Monitor output works correctly during thermal shut-

down

Table 8: Notes on chip functions regarding iC-DXC version Z1