ULN2803ADW
eight-channel NPN Darlington sink-driver array with common clamp diodes
Key details
| Part Number | ULN2803ADW |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Darlington Driver Array |
| Lifecycle Status | Obsolete |
| Series | ULN2803A |
| Package / Case | 18-pin SOIC |
| Pin Count | 18 |
| Operating Temperature | -40 C to +85 C class |
| Last Verified | 2026-07-24 |
Part information
ULN2803ADW Overview
ULN2803ADW is a Texas Instruments eight-channel NPN Darlington sink-driver array with common clamp diodes supplied in 18-pin SOIC. This page uses the exact orderable code because package, grade, temperature and option suffixes can change compatibility.
Key Technical Specifications
| Channels | 8 |
|---|---|
| Output Voltage | 50 V |
| Output Current | 500 mA per channel maximum class |
| Input | 2.7 kOhm base resistor for 5 V TTL/CMOS |
| Protection | Common-cathode clamp diodes |
Package and Ordering Notes
The listed package is 18-pin SOIC with 18 pins, leads, lands or contacts. The featured image is a generic package illustration for form-factor identification and is not an actual date-code or lot photograph. Lifecycle is recorded as Obsolete; confirm current factory support and last-time-buy constraints before design-in.
Sourcing Guidance
ULN2803ADW is obsolete or discontinued. Require traceability, date-code, package-marking and storage-condition checks for remaining stock.
For an accurate quotation, include the full MPN, target quantity, acceptable date-code range, packaging format and destination. Icearth can help review traceability documents, label photos and electrical/package alignment before order placement.
Manufacturer Documentation
Technical values were checked against Texas Instruments documentation. Use the linked datasheet as the controlling source and re-check revisions before PCB release or firmware qualification.
ULN2803ADW FAQ
What is ULN2803ADW?
ULN2803ADW is a Texas Instruments eight-channel NPN Darlington sink-driver array with common clamp diodes. It belongs to the ULN2803A series.
What are the key specifications of ULN2803ADW?
Channels is 8, and Output Voltage is 50 V. Refer to the manufacturer datasheet for limits, test conditions and revision-controlled values.
What package does ULN2803ADW use?
ULN2803ADW is supplied in 18-pin SOIC with 18 pins, leads, balls or contacts. Verify the exact footprint and ordering suffix before PCB release.
Is ULN2803ADW still in production?
ULN2803ADW is obsolete or discontinued. Remaining stock should be checked for traceability, date code, package marking and storage history.
What should be checked before sourcing ULN2803ADW?
Confirm the complete MPN, electrical ratings, package, temperature grade and required quantity. Possible alternatives include ULN2803C or TPL7407LA after pinout, input and clamp-diode verification, but compatibility must be verified independently.
Lifecycle and sourcing review
This part has a legacy lifecycle status. Submit the exact MPN, quantity, delivery destination and date-code requirements for a sourcing review.
ULN2803ADW is obsolete or discontinued. Require traceability, date-code, package-marking and storage-condition checks for remaining stock.
Potential alternative part numbers
Verify package, pinout, voltage, firmware behavior and qualification before substitution.