SN75469D

Overview

The SN75469D is a high-voltage Darlington transistor array manufactured by Texas Instruments. It integrates seven independent NPN Darlington pairs within a single integrated circuit, designed for driving inductive loads such as relays and solenoids. The device operates with a collector-emitter voltage of up to 100 V and supports a maximum continuous DC collector current of 500 mA per channel. It is housed in a 16-pin Small Outline (SO) surface-mount package. The component functions effectively across an operating temperature range from 0°C to +70°C, providing robust switching capabilities for industrial applications requiring high voltage tolerance.

Feature Summary

• Integrates seven independent NPN Darlington pairs for multi-channel load driving
• Supports high-voltage operation with a 100 V collector-emitter breakdown rating
• Includes built-in clamp diodes on each output to suppress inductive kickback
• Features a common emitter configuration allowing shared ground reference

Applications

• Driving stepper motors via peripheral drivers
• Actuating electromagnetic relays and contactors
• Powering solenoid valves in industrial automation systems
• General-purpose high-voltage switching circuits

Procurement Notes

Verify the specific suffix 'D' confirms the SOIC-16 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets prior to procurement. Ensure the supply chain provides genuine components to avoid counterfeit risks associated with discrete semiconductor arrays.

Selection Notes

Select this component when a design requires multiple high-voltage switching channels in a compact surface-mount footprint. Compare against the SN75468 series if lower voltage ratings are sufficient, or consider the SN75469N for through-hole mounting requirements. Evaluate thermal dissipation needs based on the total number of active channels and ambient operating conditions.

Part Context

This part belongs to the SN75468/69 family of high-voltage Darlington arrays produced by Texas Instruments. The 'SN75469' designation specifically denotes the inclusion of internal clamp diodes, distinguishing it from variants without them. The 'D' suffix identifies the plastic small-outline package type, differentiating it from the 'N' (PDIP) or 'NSR' (SOIC tape-and-reel) packaging options within the same functional family.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific component were not identified in the provided source material.