VERIFIED CROSS-REFERENCE
ULN2003A alternatives & equivalent parts
7-channel Darlington transistor array driver — common packages: DIP-16, SOIC-16, SOP-16, TSSOP-16. Each candidate below cites its manufacturer datasheet; check the relationship badge before substituting.
4 verified alternatives for ULN2003A
| Alternative | Manufacturer | Relationship | Key differences | Source |
|---|---|---|---|---|
| TPL7407L | Texas Instruments | Pin-to-pinDrop-in: same footprint and pinout. | TI's CMOS pin-to-pin improvement over ULN2003A: NMOS outputs instead of Darlington, lower VOL, 1.8-5 V logic. Differences: 40 V outputs (vs 50 V), 600 mA per-channel rating, SOIC/TSSOP only (no DIP). | TI 官方数据手册 |
| ULN2003LV | Texas Instruments | Pin-to-pinDrop-in: same footprint and pinout. | Low-voltage pin-to-pin upgrade in the same 16-pin packages. Differences: outputs only rated to 8 V (vs 50 V), about 100 mA per channel at 3.3 V / 140 mA at 5 V (vs 500 mA) - not a substitute for loads above 8 V. | TI 官方数据手册 |
| SN75468 | Texas Instruments | Pin-to-pinDrop-in: same footprint and pinout. | TI calls it a higher-voltage version of ULN2003A: 7-channel Darlington array with 100 V outputs (vs 50 V), 500 mA per channel, and output clamp diodes. Same 16-pin SOIC/SOP/PDIP footprints; commercial 0-70 C grade. | TI 官方数据手册 |
| TD62003APG | Toshiba | Pin-to-pinDrop-in: same footprint and pinout. | 7-channel, 50 V, 500 mA Darlington array in DIP-16 with clamp diodes - same function and footprint as ULN2003A. Lifecycle warning: the DIP orderable may be obsolete, so confirm current Toshiba availability. Differences: third-party mirror of official datasheet. | 数据手册（第三方托管，购买前请核对原厂） |
Pre-replacement checklist
- Match the 16-pin package (DIP vs SOIC vs TSSOP) - pin-to-pin claims only hold in the same package.
- Confirm the load voltage: ULN2003LV supports only up to 8 V, TPL7407L up to 40 V, ULN2003A up to 50 V, SN75468 up to 100 V.
- Check per-channel current: 500 mA (ULN2003A, SN75468, TD62003), 600 mA rated (TPL7407L), or about 140 mA (ULN2003LV at 5 V).
- Verify input logic levels: TPL7407L and ULN2003LV are CMOS-logic parts; the classic ULN2003A accepts TTL/5 V CMOS.
Need the exact lot, date code or a second source quoted?
Send the original MPN and the approved alternative. Sourceics reconfirms source, stock, date code and commercial terms before any order — no substitution without your engineering approval.
Request a quote for ULN2003ASource part reference: TI 官方数据手册. Equivalence notes are reference guidance, not a guarantee of fit — always verify against your schematic and layout.