MIC2981/82BN

Overview

The MIC2981/82BN is an eight-channel, high-voltage, high-current source driver array designed for switching high-power loads from logic-level TTL, CMOS, or PMOS control signals. It features a Darlington transistor configuration capable of delivering up to 500mA per channel with a load voltage range of 5V to 50V. The device operates within a temperature range of -40°C to 85°C and is housed in an 18-pin DIP package.

Feature Summary

• Eight-channel high-current source driver array architecture
• Compatible with logic-level TTL, CMOS, and PMOS inputs
• High-voltage capability supporting loads up to 50V
• Darlington transistor output structure for enhanced current drive

Applications

• Relay and solenoid switching
• Stepping motor control
• LED driving arrays

Procurement Notes

Verify component authenticity through authorized Microchip Technology distributors or certified partners. Confirm the specific suffix 'BN' corresponds to the 18-pin DIP package variant. Check for dual-marking indications associated with legacy Micrel production runs. Ensure compliance with RoHS standards if required by the application environment. Validate part status as obsolete when planning long-term supply chains.

Selection Notes

Select this component when multiple independent high-current outputs are required from a single IC. It is suitable for applications needing direct interface with standard logic families without additional buffering. Consider the 500mA per channel limit and 50V maximum voltage rating against load requirements. Evaluate thermal management needs due to power dissipation in the DIP-18 package.

Part Context

This part belongs to the MIC2981/82 series of high-voltage source driver arrays originally developed by Micrel, now part of Microchip Technology. The MIC2981 typically refers to the non-inverting version, while the MIC2982 may denote inverting variants, though both share similar electrical characteristics. The BN suffix indicates the specific plastic DIP packaging option.

Replacement Considerations

Public confirmed substitute part numbers are not explicitly documented in the provided source material. Verify compatibility with existing circuit designs before attempting substitution with other high-current driver arrays.