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Product Detailed Parameters
- Description：TRANS 7NPN DARL 50V 0.5A 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 ULN2004ADR is a high-voltage, high-current NPN Darlington transistor array manufactured by Texas Instruments. It integrates seven independent Darlington pairs within a single SOIC-16 surface-mount package. Each channel provides a maximum continuous collector current of 300 mA and supports a collector-emitter voltage of 50 V. The device features a 10.5 kΩ series base resistor per pair, enabling direct interface with CMOS logic operating between 6 V and 15 V. It includes common cathode clamp diodes for inductive load switching and operates reliably across a temperature range from -20°C to 70°C.
Feature Summary
- Integrates seven independent NPN Darlington pairs with integrated 10.5 kΩ base resistors for direct CMOS logic compatibility
- Features common cathode clamp diodes designed to protect against voltage spikes generated by inductive loads
- Supports high-voltage output switching up to 50 V with substantial current handling capabilities
Applications
- Relay driver circuits
- Hammer drivers
- Lamp drivers
- Display drivers for LEDs and gas discharge indicators
- Line drivers and logic buffers
Procurement Notes
Verify the specific suffix 'ADR' indicates the tape-and-reel packaging format when sourcing components. Confirm that the manufacturer designation aligns with Texas Instruments specifications. Ensure the component meets RoHS compliance requirements if applicable to the assembly process. Cross-reference the datasheet revision to confirm pinout consistency with existing designs.
Selection Notes
Select this component when interfacing 6 V to 15 V CMOS logic directly with higher voltage loads without requiring external base resistors. Choose the SOIC-16 package for surface-mount applications where space efficiency is required. Consider the 300 mA per-channel rating for moderate load currents or parallel configurations for higher demands.
Part Context
This part belongs to the ULx200xA family of high-voltage Darlington arrays. Unlike the ULN2003A which targets TTL/5V CMOS, the ULN2004A variant specifically incorporates higher value base resistors optimized for 6 V to 15 V CMOS inputs. The 'DR' suffix typically denotes reel packaging, distinguishing it from tube-packaged variants like the ULN2004AD.
Replacement Considerations
The ULN2004ADG4 serves as a lead-free compliant alternative within the same product line. Verify pinout compatibility before substituting other Darlington arrays such as the ULN2003A, noting differences in internal base resistance values.
