ULQ2004ADRG4 Equivalent & Substitute Parts

Part Overview

The ULQ2004ADRG4 is a power switch/driver IC manufactured by Texas Instruments, designed for relay and solenoid driving applications. This 7-output NPN power driver operates at 50V maximum load voltage with 500mA per output in a 16-SOIC surface mount package. The device features inverting parallel interface control and is rated for -40°C to 85°C operating temperature.

The ULQ2004ADRG4 is classified as Obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this power driver topology.

Substiute Parts

ULQ2004ADRG4

Texas InstrumentsIn Stock: 756ULQ2004ADRG4 Datasheet

Current PartRFQ

ULN2004ADR

Texas InstrumentsIn Stock: 80279ULN2004ADR Datasheet

MFR RecommendedRFQ

ULQ2004ADR

Texas InstrumentsIn Stock: 57926ULQ2004ADR Datasheet

MFR RecommendedRFQ

MC1413BDR2G

onsemiIn Stock: 150344MC1413BDR2G Datasheet

DirectRFQ

ULN2001D1013TR

STMicroelectronicsIn Stock: 24841ULN2001D1013TR Datasheet

DirectRFQ

ULN2002D1013TR

STMicroelectronicsIn Stock: 72112ULN2002D1013TR Datasheet

DirectRFQ

ULN2003D1013TR

STMicroelectronicsIn Stock: 1787225ULN2003D1013TR Datasheet

DirectRFQ

ULN2004D1013TR

STMicroelectronicsIn Stock: 54649ULN2004D1013TR Datasheet

DirectRFQ

ULQ2003ADR2G

onsemiIn Stock: 32887ULQ2003ADR2G Datasheet

DirectRFQ

ULQ2003D1013TR

STMicroelectronicsIn Stock: 51093ULQ2003D1013TR Datasheet

UpgradeRFQ

ULQ2004D1013TR

STMicroelectronicsIn Stock: 5396ULQ2004D1013TR Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ULQ2004ADRG4 is determined by strict equivalence across the following critical parameters:

• Number of Outputs: 7
• Output Type: NPN (or Darlington NPN configuration)
• Ratio - Input:Output: 1:1
• Output Configuration: Low Side
• Voltage - Load (Max): 50V
• Current - Output (Max): 500mA
• Interface: Parallel
• Input Type: Inverting
• Package / Case: 16-SOIC or 16-SO (mechanically compatible)
• Mounting Type: Surface Mount

Substitute parts are grouped into three categories based on manufacturer and product status:

MFR Recommended Substitutes (Texas Instruments Active/Last Time Buy): ULN2004ADR, ULQ2004ADR

Direct Substitutes (Alternative Manufacturers - Active Status): MC1413BDR2G (onsemi), ULN2001D1013TR, ULN2002D1013TR, ULN2003D1013TR, ULN2004D1013TR (STMicroelectronics), ULQ2003ADR2G (onsemi)

Upgrade Options (Enhanced Specifications): ULQ2003D1013TR, ULQ2004D1013TR (STMicroelectronics)

All substitute parts maintain the same electrical interface, output configuration, and thermal characteristics required for direct replacement in relay and solenoid driver applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: ULN2004ADR (Texas Instruments)

ULN2004ADR is the manufacturer-recommended substitute with Active product status. This part maintains full electrical and mechanical compatibility with the ULQ2004ADRG4. The operating temperature range is -40°C to 70°C, which is narrower than the original part. This substitution is appropriate for applications operating within this temperature window. ROHS3 compliance and MSL 1 rating ensure regulatory and environmental compatibility.

Secondary Recommendation: ULQ2004ADR (Texas Instruments)

ULQ2004ADR provides identical electrical specifications and operating temperature range (-40°C to 85°C) matching the original part. This part carries Last Time Buy status, indicating limited future availability. Selection of this part is appropriate for applications requiring extended temperature operation and when supply chain continuity is prioritized.

Alternative Substitutes: STMicroelectronics ULN200x Series

ULN2001D1013TR, ULN2002D1013TR, ULN2003D1013TR, and ULN2004D1013TR from STMicroelectronics provide functional equivalence with Active product status. These parts use 16-SO packaging (mechanically compatible with 16-SOIC). All maintain 50V/500mA specifications and -40°C to 85°C operating temperature. ULN2003D1013TR features Darlington output configuration, which may provide enhanced current gain characteristics for specific applications.

Alternative Substitute: MC1413BDR2G (onsemi)

MC1413BDR2G is categorized as a Bipolar (BJT) Transistor Array with 7 NPN Darlington outputs. This part maintains electrical equivalence with 50V/500mA ratings and Active product status. The Darlington configuration provides higher current gain (hFE minimum 1000 @ 350mA, 2V) compared to standard NPN outputs. Operating temperature is specified as 150°C (TJ), indicating enhanced thermal capability.

Alternative Substitute: ULQ2003ADR2G (onsemi)

ULQ2003ADR2G provides Darlington output configuration with Active product status. This part maintains 16-SOIC packaging and full electrical equivalence. The Darlington topology may be selected when enhanced input sensitivity or reduced input current requirements are beneficial.

All substitute parts are ROHS3 compliant with MSL 1 rating, ensuring compatibility with standard manufacturing and storage environments.

Frequently Asked Questions (FAQ)

Q: Can ULN2004ADR directly replace ULQ2004ADRG4 in all applications?

A: ULN2004ADR provides full electrical and mechanical compatibility for applications operating within -40°C to 70°C. Applications requiring operation above 70°C should use ULQ2004ADR or STMicroelectronics alternatives rated to 85°C.

Q: What is the difference between NPN and Darlington output types in these substitutes?

A: NPN output types (ULN2004ADR, ULN2001D1013TR, ULN2004D1013TR) provide standard transistor switching characteristics. Darlington output types (MC1413BDR2G, ULQ2003ADR2G, ULN2003D1013TR) feature cascaded transistor pairs, providing higher current gain and lower input current requirements. Both configurations maintain identical 50V/500mA output specifications and are functionally interchangeable for relay and solenoid driving.

Q: Are 16-SOIC and 16-SO packages mechanically interchangeable?

A: 16-SOIC and 16-SO packages are mechanically compatible for PCB mounting. Both use 0.154" (3.90mm) width with identical pin pitch and lead configuration. Parts specified as 16-SO (STMicroelectronics ULN200x series) can be substituted for 16-SOIC footprints without PCB redesign.

Q: Why is ULQ2004ADRG4 classified as Obsolete?

A: Obsolete classification indicates the manufacturer has discontinued production and no longer accepts new orders. Substitute parts with Active or Last Time Buy status ensure continued availability for new designs and production support.

Q: What is the significance of Last Time Buy status for ULQ2004ADR?

A: Last Time Buy status indicates the manufacturer will accept orders for a limited time before discontinuation. This part provides a transition path from the obsolete ULQ2004ADRG4 but should not be selected for new long-term production programs. Active status substitutes (ULN2004ADR, STMicroelectronics series) are recommended for designs requiring extended production support.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing processes and storage requirements.

Q: Can Darlington substitutes be used in applications designed for standard NPN drivers?

A: Yes. Darlington substitutes (MC1413BDR2G, ULQ2003ADR2G, ULN2003D1013TR) maintain identical output voltage and current specifications. The higher current gain of Darlington configuration may reduce input current requirements but does not affect output switching characteristics or load driving capability.