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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 ULN2004ADE4 is a high-voltage, high-current Darlington transistor array manufactured by Texas Instruments. It contains seven open-collector Darlington pairs with common emitters and integrated suppression diodes for inductive load driving. The device features NPN polarity and operates within a temperature range of -20°C to +70°C. Key electrical parameters include a collector-emitter voltage (Vceo) of 50 V, a maximum continuous collector current (Ic) of 300 mA per driver, and a peak collector current capability of 600 mA. It is housed in a 16-pin SOIC-Narrow package.
Feature Summary
- Seven independent Darlington pairs provide versatile switching capabilities for multiple loads.
- Integrated suppression diodes protect against voltage spikes generated by inductive loads.
- Inputs are positioned opposite outputs to simplify printed circuit board layout.
- Compatible with various logic families including CMOS and PMOS through specific base resistance design.
Applications
- Relay drivers
- Stepper motor and DC brushed motor drivers
- LED and gas discharge display drivers
- High-power buffer circuits
Procurement Notes
Verify the E4 suffix indicates lead-free composition and RoHS compliance according to Texas Instruments documentation. Confirm the SOIC-16 package dimensions match the target footprint. Check for end-of-life status or obsolescence notices prior to finalizing procurement plans.
Selection Notes
Select this component when driving inductive loads requiring up to 50 V and 300 mA per channel. Ensure the input logic voltage levels align with the 6 V to 15 V CMOS/PMOS compatibility range. Consider thermal dissipation requirements if paralleling outputs for higher current capacity.
Part Context
This part belongs to the ULx200xA series of high-voltage Darlington arrays. It shares functional similarities with ULN2003A but differs in internal base resistance to accommodate different logic voltage ranges. The DE4 designation specifically identifies the tape-and-reel packaging variant of the SOIC-16 package.
Replacement Considerations
- ULN2004ADG4
- ULN2004ADR
FAQ
What is the purpose of the integrated diodes?
The integrated suppression diodes are connected to the common emitter to clamp voltage spikes caused by inductive loads, protecting the transistors from damage.
How does the ULN2004A differ from ULN2003A regarding logic compatibility?
The ULN2004A includes a 10.5kΩ base resistor, making it suitable for direct interface with 6 V to 15 V CMOS and PMOS logic, whereas ULN2003A is designed for 5 V TTL/CMOS.
Can the outputs be used together?
Yes, the outputs can be paralleled to achieve higher current handling capabilities beyond the single-channel rating.
