Product Overview
Motorola ULN2804A 8-Channel Darlington Driver Array DIP-18
Condition
Used. Equipment pull. Markings legible: Motorola logo, ULN2804A, and lot/date code QHB9523. Evaluation: Visual inspection only. Function testing not performed.
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Product Overview
Motorola ULN2804A is an octal high-voltage, high-current Darlington transistor array in an 18-pin dual in-line package (DIP-18). It features eight NPN Darlington pairs with common emitters and integrated suppression diodes for switching inductive loads. Designed with integral base resistors optimized for 6V to 15V CMOS and PMOS logic levels, each channel handles continuous collector currents up to 500mA at up to 50V.
Key Features
- Eight Darlington pairs with common emitter connection
- 50V maximum collector-emitter breakdown voltage rating
- 500mA continuous collector current per driver channel
- Integral input base resistors configured for 6V to 15V CMOS and PMOS logic
- Built-in transient clamp diodes for inductive flyback protection
- Standard through-hole DIP-18 package
Applications
- Replacing failed peripheral drivers in legacy industrial automation control boards
- Interfacing CMOS microcontrollers to 12V relays, solenoids, and stepper motors on workbench projects
- Driving high-current LED indicator arrays and small DC loads in repair or hobby builds
Frequently Asked Questions
What logic family is the ULN2804A designed to interface with?
The ULN2804A series features input base resistors suited for 6V to 15V CMOS and PMOS logic levels.
Are external flyback diodes required for driving inductive loads?
No. The IC includes integrated transient suppression clamp diodes for switching inductive loads like relays and solenoids.
Why buy a single driver IC from PartsMine instead of a bulk surplus lot?
You receive the exact genuine Motorola DIP-18 component shown in the listing without committing to bulk quantities you do not need. Shipping is $8 flat rate, free on orders over $28, and ships same or next business day from our Idaho warehouse.
Eight solid channels of Darlington switching power ready to bridge logic signals to real-world loads.
