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Product Detailed Parameters
- Description：IC PWR RELAY 7NPN 1:1 16SOIC
- Series：ULx200xA
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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 ULN2004ADRG4 is a high-voltage, high-current Darlington transistor array manufactured by Texas Instruments. It integrates seven NPN Darlington pairs within a single SOIC-16 surface-mount package. Each channel provides a collector current rating of 300 mA and supports a collector-emitter voltage of 50 V. The device includes built-in series base resistors compatible with TTL and 5V CMOS logic inputs. A common cathode clamp diode is integrated across all outputs to suppress inductive kickback from connected loads.
Feature Summary
- Integrates seven independent NPN Darlington pairs for multi-channel switching
- Includes internal series base resistors eliminating external components for logic interfacing
- Features a common cathode clamp diode for protection against inductive load transients
Applications
- Relay driver circuits
- Hammer and solenoid drivers
- LED and gas discharge lamp drivers
- Line drivers and logic buffers
Procurement Notes
Verify the specific suffix 'G4' indicates lead-free and RoHS compliance status as per manufacturer documentation. Confirm the SOIC-16 package dimensions match the target PCB footprint. Ensure the component source is authorized to avoid counterfeit parts, particularly given the widespread availability of this legacy family.
Selection Notes
Select this part when seven independent high-current switches are required in a compact surface-mount form factor. Verify that the 300 mA per channel limit meets the load requirements. Consider thermal dissipation capabilities if operating near maximum ratings. Compare against the ULN2003 if lower voltage ratings are sufficient for the application.
Part Context
This component belongs to the ULN2004A family of high-voltage Darlington arrays. It serves as a direct interface between low-power digital logic and high-power analog or inductive loads. The device simplifies circuit design by integrating necessary biasing and protection components on-chip.
Replacement Considerations
The ULN2004AD is the tube-packaged equivalent of the same die and function. The ULN2004AN is the through-hole DIP-16 variant. Cross-referencing with other manufacturers requires verifying pinout compatibility and electrical parameter tolerances.
