MDQ-001HRL

Overview

The MDQ-001HRL is a Thinnet Transceiver module from the HALO Electronics TnT family, designed for 10BASE2 network integration. It operates at a nominal supply voltage of 5V with a tolerance of ±5%, accepting a maximum input ripple of 40mVpp and drawing up to 225mA. The device functions within an operating temperature range of 0°C to +70°C and a storage range of -40°C to +125°C. Packaged in a 20-pin DIP format, it integrates all necessary transceiver functions into a single unit compliant with ANSI/IEEE802.3 standards.

Feature Summary

• Integrates complete Thin Net transceiver functions including DC/DC conversion within a single package
• Includes squelch circuits on all signal inputs to eliminate noise
• Features a Heartbeat function that can be enabled or disabled via pin configuration

Applications

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

Procurement Notes

Verify component authenticity by checking manufacturer markings against official documentation. Confirm the specific ordering suffix matches the required voltage and feature set. Ensure compliance with RoHS directives if applicable to your manufacturing process. Review the datasheet for any recent product change notices regarding long-term availability or pinout modifications before finalizing procurement plans.

Selection Notes

Select this model specifically for 5V logic systems requiring Thinnet connectivity. Verify that the application does not require the optional heartbeat test enable feature, as this variant lacks that capability. Ensure the design accommodates the specified current draw and ripple limits. Consider thermal management requirements given the operational temperature constraints defined in the specifications.

Part Context

This component belongs to the HALO Electronics TnT (Thinnet Transceiver) module family. These modules utilize the H83C92 transceiver chip to ensure long-term availability for legacy IEEE802.3 compliant applications. The series offers various voltage options and feature sets to support different network interface requirements.

Replacement Considerations

Direct replacements are limited due to the specialized nature of the TnT module family. Evaluate other HALO TnT variants like the MD-001HRL if the heartbeat feature is not needed, ensuring voltage compatibility. Cross-referencing with generic thinnet transceivers requires careful verification of pinouts and electrical characteristics.