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Product Detailed Parameters
- Description：IC PWR RELAY 7NPN 1:1 16DIP
- 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：Through Hole
- Package / Case：16-DIP (0.300", 7.62mm)
- Supplier Device Package：16-PDIP
- Grade：-
- Qualification：-
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Overview
The ULN2002ANE4 is a high-voltage, high-current Darlington transistor array manufactured by Texas Instruments. It integrates seven NPN Darlington pairs with common emitters and includes built-in clamping flyback diodes for each channel to protect against inductive load transients. The device features a single common input pin that drives all seven channels simultaneously, simplifying interface logic. It is housed in a standard 16-pin DIP package suitable for through-hole mounting. Key electrical specifications include a collector-emitter breakdown voltage of 50 V and a maximum continuous collector current of 500 mA per channel.
Feature Summary
- Integrates seven independent NPN Darlington pairs within a single monolithic package
- Includes internal clamping flyback diodes across each output and emitter to suppress inductive kickback
- Features a shared common input terminal to control all channels concurrently
- Designed for direct interfacing with TTL or CMOS logic families
Applications
- Driving relays and solenoids requiring inductive load protection
- Controlling stepper motors and small DC motors
- High-voltage relay driver circuits
- General-purpose switching applications for inductive loads
Procurement Notes
Verify the E4 suffix indicates lead-free construction compliant with RoHS standards. Confirm the package type matches the required PCB footprint. Check the manufacturer's latest datasheet for updated thermal derating curves and absolute maximum ratings before finalizing the design.
Selection Notes
Select this component when driving multiple inductive loads from a single logic source. Ensure the load current does not exceed 500 mA per channel. Verify that the 50 V breakdown voltage accommodates the supply voltage and any back-EMF spikes generated by the connected loads.
Part Context
This part belongs to the ULN200x series of Darlington arrays. Unlike the ULN2003 which has ten channels, this variant provides seven channels. The ULN2004A variant offers ten channels but lacks the common collector connection found in the ULN2002. This specific model is optimized for applications requiring fewer channels than the ULN2003 but more than the ULN2004A.
Replacement Considerations
- ULN2002AN
- ULN2002APW
FAQ
What is the function of the common input pin?
The common input pin allows a single logic signal to activate all seven Darlington pairs simultaneously, reducing the number of required control lines.
How are inductive loads handled in this circuit?
Each channel includes an integrated flyback diode connected between the collector and emitter to safely dissipate energy stored in inductive loads during turn-off.
Can this device be used with 5V logic?
Yes, the input structure is compatible with standard TTL and CMOS logic levels, including 5V systems.
