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Product Detailed Parameters
- Description：IC PWR RELAY 7NPN 1:1 16SOIC
- Series：ULx200xA
- Mfr：Texas Instruments
- Package：Tape & Reel (TR)
- Transistor Type：-
- Current - Collector (Ic) (Max)：-
- Voltage - Collector Emitter Breakdown (Max)：-
- Vce Saturation (Max) @ Ib, Ic：-
- Current - Collector Cutoff (Max)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：-
- Power - Max：-
- Frequency - Transition：-
- Operating Temperature：-40°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：16-SOIC
- Grade：-
- Qualification：-
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Overview
The ULN2003ADRE4 is a high-voltage, high-current Darlington transistor array manufactured by Texas Instruments. It integrates seven NPN Darlington pairs with common emitters and integrated clamp diodes for inductive load switching. The device operates within a collector-emitter voltage range of up to 50V and supports a maximum continuous collector current of 500mA per channel. It features TTL/CMOS compatibility and is housed in a 16-pin SOIC surface-mount package.
Feature Summary
- Integrates seven independent NPN Darlington pairs with common cathode clamp diodes for efficient inductive load management
- Provides direct interface compatibility with TTL, CMOS, PMOS, and DTL logic families without additional components
- Features input-output pin opposition layout to simplify printed circuit board routing and minimize trace length
Applications
- Relay driver circuits for controlling electromechanical switches
- Stepper motor and DC brushed motor drive interfaces
- High-current LED and gas discharge lamp drivers
- Line drivers and logic buffer applications requiring high voltage tolerance
Procurement Notes
Verify the RE4 suffix indicates RoHS compliance and environmental standards during sourcing. Confirm the SOIC-16 package dimensions match the target PCB footprint. Ensure the supplier provides original manufacturer documentation to validate authenticity against counterfeit risks.
Selection Notes
Select this component when driving inductive loads such as relays or solenoids that require internal flyback protection. Choose the SOIC package for automated surface-mount assembly processes. Verify that the 50V collector-emitter rating exceeds the peak voltage of the connected load circuit.
Part Context
This part belongs to the ULN2003A series of high-voltage Darlington arrays from Texas Instruments. It serves as a standard solution for interfacing low-power digital logic with high-power analog loads. The RE4 designation specifically identifies the lead-free, RoHS-compliant variant of the standard ULN2003AD.
Replacement Considerations
Compatible substitutes include the ULN2003AN (PDIP package) and ULN2003AD (standard SOIC). Cross-reference with ILN2003A or MC1413 for functional equivalence, ensuring pinout compatibility and electrical ratings meet the specific application requirements.
