ST2042BD

Overview

The ST2042BD is a dual driver and receiver transceiver designed for RS-422 and V.11 communications, manufactured by STMicroelectronics. It operates from a single +5 V power supply and features low quiescent current consumption. The device includes two drivers and two receivers, providing balanced differential transmission capabilities. It is housed in a DIP-16 package suitable for through-hole mounting. The component meets EIA/TIA-422-B and CCITT V.11 specifications for data rates up to 2 Mbps.

Feature Summary

• Dual driver and receiver configuration for full-duplex communication
• Low quiescent current operation for energy efficiency
• Single +5 V power supply compatibility
• Compliance with RS-422 and V.11 interface standards

Applications

• RS-422 serial communication interfaces
• V.11 balanced line drivers
• Industrial control systems requiring differential signaling
• Data acquisition equipment

Procurement Notes

Verify the specific suffix 'BD' indicates the DIP-16 package variant when sourcing. Confirm that the operating temperature range aligns with industrial requirements. Ensure the datasheet version matches the production lot for accurate electrical parameter validation. Cross-reference the manufacturer's official ordering codes to avoid confusion with similar RS-485 variants.

Selection Notes

Select this component when a dual-channel RS-422 solution is required with low power consumption. It is suitable for applications needing balanced differential transmission over longer distances compared to single-ended interfaces. Consider the DIP-16 package constraints for PCB layout if space is limited. Verify signal integrity requirements against the specified slew rate and output voltage levels.

Part Context

This part belongs to the family of RS-422/RS-485 interface integrated circuits from STMicroelectronics. These devices are engineered for robust communication in noisy environments using differential signaling. The series typically offers various package options and drive capabilities to suit different board form factors and performance needs.

Replacement Considerations

Check for direct pin-compatible alternatives such as the SN75176 or MAX1487E if available. Verify that substitute parts meet the same RS-422 electrical specifications and operate within the same voltage range. Ensure thermal and mechanical characteristics match the existing design constraints.