SLLSFN5B
June 2023 – September 2025
ISO1228
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Power Ratings
5.6
Insulation Specifications
5.7
Safety-Related Certifications
5.8
Safety Limiting Values
5.9
Electrical Characteristics—DC Specification
5.10
Switching Characteristics—AC Specification
5.11
Typical Characteristics
6
Parameter Measurement Information
6.1
Test Circuits
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Surge Protection
7.3.2
Field Side LED Indication
7.3.3
Serial and Parallel Output option
7.3.4
Cyclic Redundancy Check (CRC)
7.3.5
FAULT Indication
7.3.6
Digital Low Pass Filter
7.3.7
SPI Register Map
7.3.8
SPI Timing - Non-Daisy Chain
7.3.9
SPI Timing - Daisy Chain
7.3.10
SPI Timing - Burst Mode
7.4
Device Functional Modes
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Sinking Type Digital Inputs
8.2.2
Sourcing Type Digital Inputs
8.2.3
Sink/Source Type Digital Inputs
8.2.4
Design Requirements
8.2.4.1
Detailed Design Procedure
8.2.4.1.1
Current Limit
8.2.4.1.2
Voltage Thresholds
8.2.4.1.3
Wire-Break Detection
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
9
Device and Documentation Support
9.1
Documentation Support
9.1.1
Related Documentation
9.2
Receiving Notification of Documentation Updates
9.3
Support Resources
9.4
Trademarks
9.5
Electrostatic Discharge Caution
9.6
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
1
Features
Configurable IEC 61131-2 eight Type 1/3 or four Type 2 Isolated Digital Inputs
Low Power and Heat Dissipation
Selectable input current limit
Fieldside LED drivers using input current
Configurable sinking or sourcing type inputs
Wire-break detection in sink mode
Integrated field-side power loss detection
Programmable Glitch Filters
Built in CRC check across barrier
Serial SPI and Parallel output options
Supports SPI daisy chaining
Supports SPI burst mode
Integrated IEC ESD and Surge Protection
High CMTI(Typ): 75kV/µs
V
CC1
Logic supply voltage range: 1.71V to 5.5V
AVCC field supply voltage range (sink mode): 8.5V to 36V
AVCC field supply voltage range (source mode): 13V to 36V
Ambient temperature range: –40°C to 125°C
Small Footprint 38-SSOP Package
Safety-related certifications:
4242V
PK
V
IOTM
and 637V
PK
V
IORM
per
DIN EN IEC 60747-17 (VDE 0884-17)
3000-V
RMS
Isolation for 1 Minute per UL 1577
IEC 62368-1, IEC 61010-1 Certifications
All Certifications Planned