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STMicroelectronics Electronic Components Datasheet

SCLT3-8BT8 Datasheet

High speed digital input current limiter

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SCLT3-8BQ7, SCLT3-8BT8
High speed digital input current limiter with digital filter
Datasheet - production data
QFN 7x7 - 48L
HTSSOP-38 package
Features
8 inputs - 8-bit SPI output
High side input with common ground
5 V voltage regulator
Package: QFN 7x7 - 48L or HTSSOP-38
35 V reverse polarity capable
Adjustable current limiters
LED output for visual status
Optional: 16-bit mode with parity check,
temperature and voltage alarms
Daisy chain capable
Input digital filter with adjustable delay: 20
µs to 3 ms
Power dissipation: 78 mW per channel
Complies with the following standards
IEC 61000-4-2
±8 kV contact discharge
±15 kV air discharge
IEC 61000-4-4
Input: ±1 kV
Power supply: ±2.5 kV
Applications
Programmable logic controller and remote
input modules
High speed protected termination for digital
input with serialized SPI output
IEC61131-2 type 1, 2 and 3
Description
The SCLT3 series provides an 8-line protected
digital input termination with serialized state
transfer.
This device enhances the I/O module density by
cutting the dissipation (78 mW per input) and
reducing the count of opto-transistors.
An adjustable digital filter and an LED driver are
embedded in each type 3 input section. Its 2 MHz
SPI peripheral output serializes the input state
transfer to the I/O module controller.
Figure 1: QFN 7x7-48L (top view)
TOP VIEW
48 47 46 45 44 43 42 41 40 39 38 37
1 36
2 35
3 34
4 33
5 32
6 31
7 30
8 29
9 28
10 27
11 26
12 25
13 14 15 16 17 18 19 20 21 22 23 24
December 2016
DocID027845 Rev 3
This is information on a product in full production.
1/21
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STMicroelectronics Electronic Components Datasheet

SCLT3-8BT8 Datasheet

High speed digital input current limiter

No Preview Available !

Circuit block diagrams
SCLT3-8BQ7, SCLT3-8BT8
1 Circuit block diagrams
Figure 2: Circuit block diagram
Figure 3: Basic application schematic
2/21 DocID027845 Rev 3


Part Number SCLT3-8BT8
Description High speed digital input current limiter
Maker STMicroelectronics
Total Page 21 Pages
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