SLLSFR9A
April 2024 – April 2024
THVD4411
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
Typical Characteristics
6
Parameter Measurement Information
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
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
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)
RGE|24
MPQF124G
Thermal pad, mechanical data (Package|Pins)
RGE|24
QFND136Y
Orderable Information
sllsfr9a_oa
sllsfr9a_pm
1
Features
Meets or exceeds the requirements of the TIA/EIA-485A and TIA/EIA-232F standards
1 transmitter, 1 receiver for RS-232
1 transmitter, 1 receiver for RS-485
On-chip switchable 120Ω termination resistor for RS-485 mode
Integrated charge-pump for RS-232 signaling
3V to 5.5V supply voltage
1.65V to 5.5V supply for logic data and control signals
RS-485 differential output exceeds 2.1V for PROFIBUS compatibility with 5V supply
Large output swing (typical ± 9V) for RS-232 mode
SLR Pin Selectable Data Rates:
RS-232 3T5R mode: 250kbps and 1Mbps
RS-485 half-duplex and full-duplex mode: 500kbps and 20Mbps
Bus I/O protection
±16kV HBM ESD
±8kV IEC 61000-4-2 contact and ±15kV air-gap discharge
±4kV IEC 61000-4-4 fast transient burst
Shutdown pin for extremely low current consumption (10µA typical) in disabled state
Glitch-free power-up/down for hot plug-in capability
1/8 unit load (up to 256 bus nodes) for RS-485
Open, short, and idle bus failsafe for RS-485 receiver
Bus short-circuit protection, Thermal shutdown
Extended ambient temperature range: -40°C to 125°C
Space-saving thermally efficient 4mm x 4mm VQFN-24 package