SLLSF21D
September 2018 – February 2020
ISO1500
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Simplified Schematic
4
Revision History
5
Pin Configuration and Functions
Pin Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Power Ratings
6.6
Insulation Specifications
6.7
Safety-Related Certifications
6.8
Safety Limiting Values
6.9
Electrical Characteristics: Driver
6.10
Electrical Characteristics: Receiver
6.11
Supply Current Characteristics: Side 1(ICC1)
6.12
Supply Current Characteristics: Side 2(ICC2)
6.13
Switching Characteristics: Driver
6.14
Switching Characteristics: Receiver
6.15
Insulation Characteristics Curves
6.16
Typical Characteristics
7
Parameter Measurement Information
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Electromagnetic Compatibility (EMC) Considerations
8.3.2
Failsafe Receiver
8.3.3
Thermal Shutdown
8.3.4
Glitch-Free Power Up and Power Down
8.4
Device Functional Modes
8.4.1
Device I/O Schematics
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Data Rate and Bus Length
9.2.2.2
Stub Length
9.2.2.3
Bus Loading
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.1.1
PCB Material
11.2
Layout Example
12
Device and Documentation Support
12.1
Documentation Support
12.1.1
Related Documentation
12.2
Receiving Notification of Documentation Updates
12.3
Community Resource
12.4
Trademarks
12.5
Electrostatic Discharge Caution
12.6
Glossary
13
Mechanical, Packaging, and Orderable Information
7
Parameter Measurement Information
Figure 19.
Driver Voltages
1.
R
L
= 100 Ω for RS422, R
L
= 54 Ω for RS-485
Figure 20.
Driver Voltages
1.
C
L
includes fixture and instrumentation capacitance.
Figure 21.
Driver Switching Specifications
1.
Includes probe and fixture capacitance.
Figure 22.
Common Mode Transient Immunity (CMTI)—Half Duplex
1.
C
L
includes fixture and instrumentation capacitance
Figure 23.
Driver Enable and Disable Times
Figure 24.
Driver Enable and Disable Times
1.
C
L
includes fixture and instrumentation capacitance.
Figure 25.
Receiver Switching Specifications
Figure 26.
Receiver Enable and Disable Times
Figure 27.
Receiver Enable and Disable Times
1.
The driver should not sustain any damage with this configuration.
Figure 28.
Short-Circuit Current Limiting