ULN2004AINSRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments ULN2004AINSRG4 is a 7-channel NPN Darlington transistor array rated at 50 V and 500 mA per channel in SOP-16 package. Integrates suppression diodes for inductive loads and drives relays, motors, and solenoids. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- ULN2004AINSRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 7 independent NPN Darlington pairs each rated 50 V / 500 mA with built-in transient suppression diodes, eliminating external flyback protection components for relay and motor loads
- Inverted-output current-sink topology interfaces directly with CMOS and TTL logic without additional transistors or resistors
- SOP-16 surface-mount package enables compact high-density driver layouts versus through-hole alternatives while maintaining 500 mA per channel drive capability
Applications
ULN2004AINSRG4 bridges the gap between low-current logic signals and high-current inductive loads such as stepper motor windings, relay coils, and solenoid valves requiring up to 500 mA per channel at 50 V. Its 7-channel architecture allows a single IC to drive a full 4-phase stepper motor plus three auxiliary relays from one 16-pin SOP footprint. Vending machine actuators, industrial PLC output modules, and home automation boards also use this array to switch 24 V DC solenoids directly from 3.3 V or 5 V microcontroller GPIO pins.
Specifications
| YTEOL | 0 |
| Built-in Protections | TRANSIENT |
| Driver Number of Bits | 7 |
| Input Characteristics | STANDARD |
| Interface IC Type | BUFFER OR INVERTER BASED PERIPHERAL DRIVER |
| JESD-30 Code | R-PDSO-G16 |
| Number of Functions | 7 |
| Output Current Flow Direction | SINK |
| Output Peak Current Limit-Nom | 0.5A |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Supply Current-Max | 1.45mA |
| Supply Voltage-Max | 8V |
| Surface Mount | YES |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Turn-off Time | 10 µs |
| Turn-on Time | 10 µs |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ULN2004AINSRG4:
suggested
suggested
Frequently Asked Questions
How much current can each channel of ULN2004AINSRG4 sink, and what voltage rating applies to the output?
Each of the 7 Darlington channels in ULN2004AINSRG4 can sink up to 500 mA continuous current at a maximum collector-emitter voltage of 50 V. Built-in transient suppression diodes clamp inductive kickback spikes on relay coil and solenoid valve drive lines, removing the need for external flyback diodes and saving PCB space in 24 V industrial drive circuits.
Can ULN2004AINSRG4 interface directly with 3.3 V microcontroller GPIO pins to drive 24 V relays?
Yes, ULN2004AINSRG4 accepts input voltages as low as 1.5 V for a logic high, making it compatible with 3.3 V and 5 V CMOS GPIO outputs without pull-up resistors or level shifters. The open-collector outputs then switch the load referenced to the 24 V bus, enabling a direct interface between low-voltage microcontrollers and 24 V industrial relay coils drawing up to 500 mA per channel.
For a 4-phase stepper motor driver design, how many ULN2004AINSRG4 channels are required per motor?
A 4-phase unipolar stepper motor requires 4 sink-driver channels, so a single ULN2004AINSRG4 drives one complete motor while leaving 3 channels free for auxiliary functions such as enable signals or LED indicators. Each winding typically draws 100 mA to 400 mA at 12 V to 24 V, well within the 500 mA per channel and 50 V rating of the SOP-16 packaged array.
What is the maximum aggregate current the ULN2004AINSRG4 can handle when all 7 channels switch simultaneously?
When all 7 channels conduct simultaneously, the total package dissipation limit applies; at 500 mA per channel the theoretical maximum is 3.5 A total, but thermal derating reduces this at ambient temperatures above 25°C. In practice, designers plan for simultaneous activation of no more than 4 channels at full 500 mA load to stay within the SOP-16 package thermal budget of approximately 1 W to 2 W depending on PCB copper pour.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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