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STMicroelectronics - High speed digital input current limiter

Numéro de référence SCLT3-8BQ7
Description High speed digital input current limiter
Fabricant STMicroelectronics 
Logo STMicroelectronics 





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SCLT3-8BQ7 fiche technique
SCLT3-8BQ7
High speed digital input current limiter with digital filter






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Features
8 inputs - 8-bit SPI output
High side input with common ground
5 V Voltage regulator
Package: QFN 7x7 - 48L
30 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 following standards:
IEC61000-4-2:
– ±8 kV contact discharge
– ±15 kV air discharge
Datasheet - production data
IEC61000-4-4:
– ±4 kV
IEC61000-4-5:
– Input: ±1 kV
– Power supply: ±2.5 kV
Application
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
Compliant with EN60947-5-2
Benefits
Simplified design due to
– Built-in over voltage robustness and
immune data transfer
– Compliance with sensors and PLC's
standards
Space saving in cost effective solution with
– Integrated QFN 7x7 package
– SPI output reducing opto-couplers quantity
Energy efficient solution
– Energy-less input LED visual status
powered by inputs current
– Low overall dissipation versus discrete
Description
The SCLT3-8BQ7 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.
November 2015
This is information on a product in full production.
DocID027845 Rev 2
1/18
www.st.com

PagesPages 18
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