TLC5917IDRG4 Equivalent & Substitute Parts

Part Overview

The TLC5917IDRG4 is an 8-output linear LED driver IC manufactured by Texas Instruments, designed for signage and display applications. This shift register-based driver operates across a 3V to 5.5V supply range and delivers 120mA per output channel with integrated switching capability. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

TLC5917IDRG4

Texas InstrumentsIn Stock: 1159TLC5917IDRG4 Datasheet

Current PartRFQ

TLC5916IDR

Texas InstrumentsIn Stock: 16908TLC5916IDR Datasheet

Parametric EquivalentRFQ

TLC5917IDR

Texas InstrumentsIn Stock: 17660TLC5917IDR Datasheet

Parametric EquivalentRFQ

TLC5917QDRQ1

Texas InstrumentsIn Stock: 2320TLC5917QDRQ1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TLC5917IDRG4 is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• 8-output linear shift register topology
• 120mA per-channel output current capability
• 3V to 5.5V supply voltage range
• 16-SOIC package form factor
• ROHS3 compliance and MSL 1 rating

Substitute Parts Identified:

The TLC5916IDR and TLC5917IDR are parametric equivalents with identical electrical specifications and active product status. Both maintain full compatibility with the original part's functional requirements and are available in higher inventory quantities.

The TLC5917QDRQ1 is an automotive-grade variant (AEC-Q100 qualified) with equivalent core functionality. This part features a reduced maximum output voltage specification (17V versus 20V) and automotive qualification, making it suitable for applications requiring automotive-grade components.

Parameter Comparison

Engineering Selection Recommendations

For Standard Commercial Applications: The TLC5917IDR is the primary recommended substitute. This part maintains identical electrical and mechanical specifications to the TLC5917IDRG4 while offering active product status and significantly higher inventory availability (17,600 units). The TLC5916IDR provides an equivalent alternative with comparable specifications and robust stock levels (16,898 units).

For Automotive Applications: The TLC5917QDRQ1 is specified for designs requiring automotive-grade components with AEC-Q100 qualification. This variant operates within the same supply voltage and output current parameters. The reduced maximum output voltage specification (17V versus 20V) must be evaluated against circuit requirements. Automotive qualification and active product status support long-term supply chain stability.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols. No additional compliance modifications are required for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can TLC5916IDR directly replace TLC5917IDRG4? A: Yes. Both parts are 8-output linear shift register LED drivers with identical supply voltage ranges (3V–5.5V), output current ratings (120mA per channel), and 16-SOIC packaging. Electrical and mechanical compatibility is complete.

Q: What is the difference between TLC5917IDR and TLC5917QDRQ1? A: The TLC5917QDRQ1 is automotive-grade (AEC-Q100 qualified) with a maximum output voltage of 17V, compared to 20V for the standard TLC5917IDR. Both share identical supply voltage, output current, and package specifications. Selection depends on automotive qualification requirements and output voltage headroom in the application circuit.

Q: Is the 16-SOIC package identical across all substitute parts? A: Yes. All substitute parts use the 16-SOIC package with 0.154" width (3.90mm), ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: Why is TLC5917IDRG4 discontinued? A: Product discontinuation is determined by manufacturer lifecycle decisions. Active alternatives (TLC5916IDR, TLC5917IDR, TLC5917QDRQ1) provide equivalent functionality with ongoing supply availability.

Q: Are there any thermal or frequency differences between substitutes? A: No. All substitute parts operate at 30MHz frequency and support the full -40°C to 125°C temperature range. Thermal performance is equivalent across the product family.

Q: What inventory considerations apply to substitute selection? A: TLC5917IDR offers the highest inventory (17,600 units), followed by TLC5916IDR (16,898 units). TLC5917QDRQ1 automotive variant has lower availability (2,236 units). Selection should account for production volume and supply chain requirements.