ISO1I811T_12 Datasheet, PDF (5/28 Pages) Infineon Technologies AG – Isolated 8 Channel Digital Input with IEC61131-2 Type 1/2/3 Characteristics

ISO1I811T
Isolated 8 Channel Digital Input with
IEC61131-2 Type 1/2/3 Characteristics
Product Highlights
• Minimization of power dissipation due to constant current
characteristic
• Status LED output for each input
• Digital averaging of the input signals to suppress interference
pulses
• Isolation between Input and Output using Coreless
Transformer Technology
Features
Description
• Complete system integration (up to eight digital
sensor or switch inputs, galvanic isolation and
intelligent micro-controller or bus-ASIC interface)
• 8-channel input according to IEC61131-2 (Type
1/2/3)
• Integrated galvanic isolation 500VAC
(EN60664-1, UL1577)
• 3.3/5V SPI and parallel micro-controller interface
• Adjustable deglitching filters
• Up to 125 kHz sampling frequency
• V_BB under-voltage detection
• Package: TSSOP-48, 8 mm x 12.5 mm
Typical Application
Programmable Logic Controllers(PLC)
Industrial PC
General Control Equipment
The ISO1I811T is an electrically isolated 8 bit data
input interface in TSSOP-48 package.
This part is used to detect the signal states of eight
independent input lines according to IEC61131-2 Type
1/2/3 (e.g. two-wire proximity switches) with a common
ground (GNDFI).
For operation in accordance with IEC61131-2, it is
necessary for the ISO1I811T to be wired with resistors
according to the application diagram.
The 8 bit parallel/serial µC compatible interface allows
the IC to directly connect to a µC system. The µC
interface also supports a direct control mode and is
designed to operate with 3.3/5V CMOS compatible
levels.
The data transfer and isolation from input to output side
is realized by the integrated Coreless Transformer
Technology.
V_FI
330n
VBB
TS
IN0
I0H
12k ^2k
I0L
S
E
R
I
A
L
IN7
I7H
I
Z
12k ^2k
E
I7L
GNDFI
GNDBB
Data Sheet
VCC
D
digital
E
filter
S
E
L
R
O
I
G
A
I
L
C
I
Z
digital
E
filter
Rosc
DS0
DS1
/ERR
/RD
/CS
parallel
or serial
interface
µC
e.g.
XE166
ISO1I811T
GND
5
Revision 2.0, 2012-06-14