SLLSFS0
April 2024
THVD4421
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
ESD Ratings [IEC]
5.4
Recommended Operating Conditions
5.5
Thermal Information
5.6
Power Dissipation
5.7
Electrical Characteristics
5.8
Switching Characteristics_RS-485_500kbps
5.9
Switching Characteristics_RS-485_20Mbps
5.10
Switching Characteristics, Driver_RS232
5.11
Switching Characteristics, Receiver_RS232
5.12
Switching Characteristics_MODE switching
5.13
Switching Characteristics_RS-485_Termination resistor
5.14
Switching Characteristics_Loopback mode
5.15
Typical Characteristics
6
Parameter Measurement Information
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagrams
7.3
Feature Description
7.3.1
Integrated IEC ESD and EFT Protection
7.3.2
Protection Features
7.3.3
Receiver Fail-Safe Operation
7.3.4
Low-Power Shutdown Mode
7.3.5
On-chip Switchable Termination Resistor
7.3.6
Operational Data Rate
7.3.7
Diagnostic Loopback
7.3.8
Integrated Charge Pump for RS-232
7.4
Device Functional Modes
7.4.1
RS-485 Functionality
7.4.2
RS-232 Functionality
7.4.3
Mode Control
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.1.1
Data Rate and Bus Length
8.2.1.2
Stub Length
8.2.1.3
Bus Loading
8.2.2
Detailed Design Procedure
8.2.3
Application Curves
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
Device Support
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
Package Options
Mechanical Data (Package|Pins)
RHB|32
MPQF130D
Thermal pad, mechanical data (Package|Pins)
RHB|32
QFND029X
Orderable Information
sllsfs0_oa
sllsfs0_pm
6
Parameter Measurement Information
Figure 6-1
Measurement of RS-485 Driver Differential Output Voltage With Common-Mode Load
Figure 6-2
Measurement of RS-485 Driver Differential and Common-Mode Output With RS-485 Load
Figure 6-3
Measurement of RS-485 Driver Differential Output Rise and Fall Times and Propagation Delays
Figure 6-4
Measurement of RS-485 Driver Enable and Disable Times With Active High Output and Pull-Down Load
Figure 6-5
Measurement of RS-485 Driver Enable and Disable Times With Active Low Output and Pull-up Load
Figure 6-6
Measurement of RS-485 Receiver Output Rise and Fall Times and Propagation Delays
Figure 6-7
Measurement of RS-485 Receiver Enable/Disable Times in Half Duplex Mode
Figure 6-8
Measurement of RS-485 Receiver Enable Time from Shutdown with TX Disabled: Full duplex Mode
Figure 6-9
Termination Resistor Measurement
Figure 6-10
Termination Resistor Switching Measurement
Figure 6-11
Time from Shutdown to RS-232 Ready
Figure 6-12
Time to Switch from RS-232 2T2R Mode to RS-485 Full Duplex Mode and Back
Figure 6-13
Time to Switch from RS-232 Loopback to Normal RS-232 2T2R Mode and Back
Figure 6-14
Time to Switch from RS-485 Full Duplex to Half Duplex and Back
Figure 6-15
RS-232 Driver Prop Delay, Pulse Skew
Figure 6-16
RS-232 Driver Slew Rate
Figure 6-17
RS-232 Receiver Propagation Delay, Pulse Skew
Figure 6-18
RS-232 Receiver Enable and Disable Time