SystemBase SB200 One-Chip RS232 to RS422/RS485 Serial Converting Transceiver

Product Description

The SystemBase SB200 is the world's most powerful all-in-one, port-powered industrial-grade serial signal converter chip that effortlessly bridges RS232 and RS422/RS485 communications. With built-in auto direction control, port-powered operation, and robust ESD protection, the SB200 is engineered for OEMs, integrators, and industrial users needing compact, reliable data conversion and extending communication distances up to 1.2km.

Key Features

🔌 Port-Powered Innovation

• No external power supply required - extracts power directly from RS232 signal lines (TXD, RTS, DTR)
• Optional 9-12VDC external power support for demanding applications
• Built-in power extraction circuits for maximum convenience

⚡ High-Performance Communication

• Maximum data rate: 1 Mbps (RS232, RS422, RS485)
• Support for up to 256 nodes on RS485 bus (1/8-unit load receiver)
• Ultra-compact 6mm x 6mm QFN-40 package design

🎯 Auto Direction Control

• Intelligent automatic toggle control eliminates manual RS422/RS485 activation
• No software control required - simply send and receive data
• Supports both full-duplex (RS422) and half-duplex (RS485) operation

🛡️ Industrial-Grade Protection

• ESD protection: ±15kV HBM on serial interface pins
• ±10kV IEC 61000-4-2 contact discharge protection
• Operating temperature: -40°C to +85°C
• Built-in 120Ω selectable termination resistor

Technical Specifications

Interface Support:

• RS232: 1 Driver, 1 Receiver
• RS422/RS485: 1 Driver, 1 Receiver
• Automatic protocol conversion in both directions

Operational Modes:

• RS232 ↔ RS422 (point-to-point & multi-drop)
• RS232 ↔ RS485 (non-echo mode)
• RS232 ↔ RS485 (echo mode)

Electrical Characteristics:

• Supply Voltage: 9-12VDC (external power)
• Supply Current: 5.5-10mA (no load)
• Maximum Distance: 1.2km (RS422/RS485 side)
• Package: QFN-40 (6mm x 6mm)

Additional Features:

• LED indicators for TX/RX data transmission
• Fail-safe operation with external pull-up/pull-down resistors
• RoHS compliant
• No additional software required

Applications

Perfect for a wide range of industrial and commercial applications:

• Industrial Controls & Automation
• Utility Meters & Smart Grid
• Motor Drives & Motion Control
• Lighting Systems
• Telecommunications Equipment
• Security Systems
• Instrumentation & Test Equipment
• Building Automation

What's Included

• 1x SystemBase SB200 IC (QFN-40 package)
• Online technical documentation and application notes
• PCB layout guidelines

Why Choose the SB200?

Compared to traditional serial converters:

• Smallest footprint - World's most compact solution
• No external power required - Port-powered convenience
• Automatic control - No manual direction switching
• Industrial-grade reliability - Superior ESD protection
• Higher performance - Up to 1 Mbps vs. typical 115.2 Kbps

Perfect for:

• Upgrading legacy RS232 equipment
• Extending RS232 communication distances
• Connecting RS232 devices to RS485 networks
• Creating the smallest possible serial converter solutions

Technical Support & Documentation

• SB200 Datasheet (PDF)
• SB200 Feature Summary (PDF)
• SB200 Product Brief (PDF)

For additional technical information and support, visit: SystemBase SB200 Official Website.

Please Contact Us for Quantity and OEM discounts

Note: This is an IC component requiring PCB integration. Suitable for electronics manufacturers, system integrators, and advanced hobbyists with PCB design capabilities.