LM3914VX Equivalent & Substitute Parts

Part Overview

The LM3914VX is a LED, LCD, and Vacuum Fluorescent (VF) display driver IC manufactured by Texas Instruments, designed for dot/bar display applications with 10-step configuration. The device operates across a 3V to 20V supply voltage range with a supply current of 6.1 mA and is housed in a 20-PLCC (9x9) surface mount package.

The LM3914VX is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability for production, and support long-term system maintenance where original inventory is depleted or no longer manufactured.

Substiute Parts

LM3914VX

Texas InstrumentsIn Stock: 2423LM3914VX Datasheet

Current PartRFQ

LM3914VX/NOPB

Texas InstrumentsIn Stock: 3893LM3914VX/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM3914VX is determined by strict equivalence across the following critical parameters:

• Display Type: LED, LCD, Vacuum Fluorescent (VF) driver capability
• Configuration: Dot/Bar Display with 10-step output
• Electrical Specifications: 3V ~ 20V supply voltage, 6.1 mA supply current
• Operating Temperature Range: 0°C ~ 70°C
• Package / Case: 20-LCC (J-Lead) with 20-PLCC (9x9) footprint
• Mounting Type: Surface Mount

The LM3914VX/NOPB is a direct manufacturer equivalent produced by Texas Instruments under the same base product number (LM3914) with identical electrical and mechanical specifications. The primary distinction is product status and RoHS compliance level, which affects long-term availability and regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

The LM3914VX and LM3914VX/NOPB are electrically and mechanically identical devices. Selection between these parts should be based on the following factors:

Product Status: The LM3914VX is classified as Obsolete, indicating no further manufacturing or support from Texas Instruments. The LM3914VX/NOPB carries a Last Time Buy status, indicating limited remaining inventory before discontinuation. For new designs or long-term production requirements, the LM3914VX/NOPB should be prioritized while available inventory exists.

RoHS Compliance: The LM3914VX is RoHS non-compliant, while the LM3914VX/NOPB is ROHS3 compliant. Applications subject to RoHS regulations or customer requirements mandating RoHS compliance must use the LM3914VX/NOPB variant.

Packaging and Availability: The LM3914VX/NOPB is available in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for both prototype and production quantities. Current inventory for LM3914VX/NOPB (3790 Pcs) exceeds that of LM3914VX (2348 Pcs), supporting immediate procurement needs.

Frequently Asked Questions (FAQ)

Q: Are the LM3914VX and LM3914VX/NOPB pin-for-pin compatible?

A: Yes. Both devices use the 20-PLCC (9x9) package with identical pinout, electrical specifications, and functional behavior. Direct substitution on existing PCB layouts is supported without design modification.

Q: What is the difference between LM3914VX and LM3914VX/NOPB?

A: The primary differences are product status and RoHS compliance. The LM3914VX is Obsolete and RoHS non-compliant. The LM3914VX/NOPB is Last Time Buy status and ROHS3 compliant. Electrical and mechanical specifications are identical.

Q: Can I use LM3914VX/NOPB as a direct replacement for LM3914VX in production?

A: Yes, the LM3914VX/NOPB is a direct equivalent and can be used as a replacement. However, verify that your application and supply chain requirements align with the Last Time Buy status, as this variant will eventually be discontinued.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by matching display type (LED, LCD, VF), configuration (Dot/Bar), 10-step output, supply voltage range (3V ~ 20V), supply current (6.1 mA), operating temperature (0°C ~ 70°C), and package type (20-PLCC 9x9 surface mount).

Q: Are there any compliance or certification differences between these parts?

A: Yes. The LM3914VX/NOPB is ROHS3 compliant and suitable for applications requiring RoHS certification. The LM3914VX is RoHS non-compliant and may not be acceptable for regulated applications or customers with RoHS mandates.

Q: What is the moisture sensitivity level for these devices?

A: Both the LM3914VX and LM3914VX/NOPB have a Moisture Sensitivity Level (MSL) of 2A with a 4-week floor life rating. Standard moisture control procedures during storage and handling are required.