MD-003HRL

Overview

The HALO Electronics MD-003HRL is a Thinnet Transceiver module designed for 10BASE2 network applications. It operates on a 3.3V supply voltage with a ±5% tolerance and supports an operating temperature range of 0°C to +70°C. The module integrates all necessary transceiver functions within a single 20-pin package, eliminating the need for external components. Key electrical specifications include a maximum input ripple of 100mVpp at 20MHz and a maximum input current of 340mA. The device complies with ANSI/IEEE802.3 and ISO8802-3 standards for Thin Net.

Feature Summary

• Integrates complete Thinnet transceiver functionality into a compact 20-pin DIP package
• Includes squelch circuits on all signal inputs to eliminate noise
• Features an internal DC/DC converter for efficient power management
• Utilizes the H83C92 transceiver chip for long-term availability

Applications

• Backplane Applications
• Network Interface Cards
• 10BASE-T Hub with 10BASE2 Interface
• Thin Net Transceivers

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm pinout and feature configuration. Ensure the design accommodates the required 3.3V supply voltage and thermal constraints for the specified operating temperature range. Confirm RoHS compliance status through the manufacturer's latest release notes before finalizing procurement plans.

Selection Notes

Select this module when a complete, standalone solution for 10BASE2 networks is required without external discrete components. Compare against other variants in the TnT family based on supply voltage requirements (3.3V vs 5V or 12V) and the necessity of the Heartbeat Enable feature. Ensure the application environment stays within the 0°C to +70°C operational limits.

Part Context

This component belongs to the HALO Electronics 'TnT' (Thinnet Transceiver) module family. These modules are engineered to replace discontinued legacy transceiver chips by incorporating the proprietary H83C92 IC. The series provides a standardized interface for integrating coaxial Ethernet connectivity into various computing and networking hardware designs.

Replacement Considerations

Direct replacements may be limited due to the specialized nature of the H83C92 chip integration. Verify compatibility with existing PCB footprints and signal routing requirements. Consult HALO Electronics for any updated module revisions that maintain functional equivalence while addressing potential supply chain constraints.