SLLSFS1B
August 2023 – April 2024
THVD4431
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
RS-485 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 for RS-485
8.2.1.2
Stub Length for RS-485 Network
8.2.1.3
Bus Loading for RS-485 Network
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
9.1.1
Third-Party Products Disclaimer
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)
RHA|40
MPQF135D
Thermal pad, mechanical data (Package|Pins)
RHA|40
QFND740
Orderable Information
sllsfs1b_oa
sllsfs1b_pm
Data Sheet
THVD4431 Multiprotocol (RS-232, RS-422, RS485) Transceiver with Integrated
120-Ω Switchable Termination Resistor and IEC-ESD Protection