Manufacturer Part Number
DS8921M
Manufacturer
Texas Instruments
Introduction
The DS8921M is an RS422/RS485 full-duplex transceiver designed for high-speed bidirectional data communication on multipoint bus transmission lines.
Product Features and Performance
RS422 and RS485 protocol support
Full-duplex communication
Single driver and receiver pair
Receiver hysteresis of 70 mV
Surface mount package
Optimized for balanced multipoint bus transmission
Designed for high-speed applications
Product Advantages
Robust design for improved signal integrity
Integrated protection for industrial environments
High noise immunity due to built-in hysteresis
Ease of design with simplified wiring
Key Technical Parameters
Number of Drivers/Receivers: 1/1
Duplex: Full
Receiver Hysteresis: 70 mV
Voltage - Supply: 4.5V to 5.5V
Operating Temperature Range: 0°C to 70°C
Mounting Type: Surface Mount
Package/Case: 8-SOIC
Quality and Safety Features
Built-in thermal protection
Industry-standard manufacture and testing
Reliable operation within specified temperature range
Compatibility
Compatible with RS422 and RS485 protocols
Suitable for multipoint bus transmission lines
Application Areas
Industrial automation and control
Telecommunications systems
Data acquisition systems
Networking equipment
Product Lifecycle
Obsolete status
Consider seeking replacements or upgrades as production may be discontinued
Several Key Reasons to Choose This Product
High-speed operation suitable for industrial applications
Robust design allows for use in harsh environments
Full-duplex capability enables bidirectional communication without switching
Comprehensive technical support from Texas Instruments
Ease of integration into existing systems with standard voltage requirements and SOIC package