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Product Detailed Parameters
- Description：TRANS 7NPN DARL 50V 0.5A 16SOIC
- Series：ULx200xA
- Mfr：Texas Instruments
- Package：Tube
- 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 ULN2004ADG4 is a high-voltage, high-current Darlington transistor array manufactured by Texas Instruments. It integrates seven NPN Darlington pairs within a single SOIC-16 package. Each pair features a 50V collector-emitter voltage rating and a 500mA continuous collector current capability. The device includes internal 10.5kΩ base resistors for direct CMOS logic compatibility with input voltages up to 15V. Common cathode clamp diodes are provided on each output to manage inductive load switching transients.
Feature Summary
- Integrates seven independent NPN Darlington transistor pairs with integrated base resistors
- Features common cathode clamp diodes on all outputs for inductive load protection
- Designed for direct interface with 6V to 15V CMOS logic families
- Supports high-voltage switching applications with 50V output capability
Applications
- Relay driver circuits
- Hammer and solenoid drivers
- Incandescent lamp drivers
- LED and gas discharge display drivers
- Line drivers and logic buffers
Procurement Notes
Verify the component status before procurement as the ULN2004AD variant has been marked as obsolete by the manufacturer. Confirm that the specific lot date code meets project requirements. Ensure the SOIC-16 package dimensions align with the PCB footprint. Check for RoHS compliance documentation associated with the DG4 suffix. Validate supply chain authenticity through authorized distributors.
Selection Notes
Select this component when driving inductive loads requiring 500mA per channel from a 15V CMOS source. Choose the ULN2004ADG4 over the ULN2003A series if lower input current draw is required due to the higher 10.5kΩ base resistance. Ensure the application does not exceed the 50V output voltage limit. Consider thermal dissipation capabilities if multiple channels are activated simultaneously.
Part Context
This part belongs to the ULx200xA family of high-voltage Darlington arrays. It differs from the ULN2003A by utilizing larger base resistors (10.5kΩ vs 2.7kΩ), which reduces input current demand from CMOS logic. The DG4 suffix indicates a lead-free, RoHS-compliant manufacturing process compared to earlier non-G4 versions.
Replacement Considerations
The ULN2004AD is an obsolete predecessor to the ULN2004ADG4. Functionally equivalent parts include the ULN2004AN for through-hole applications or the ULN2004ADR for reel packaging. Verify pinout compatibility when substituting with generic Darlington arrays.
