LM3914V Equivalent & Substitute Parts

Part Overview

The LM3914V 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 supports surface mount installation in a 20-PLCC (9x9) package.

The LM3914V is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or maintenance requirements for systems utilizing this display driver architecture.

Substiute Parts

LM3914V

Texas InstrumentsIn Stock: 2156LM3914V Datasheet

Current PartRFQ

LM3914V/NOPB

Texas InstrumentsIn Stock: 3453LM3914V/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM3914V is determined by strict equivalence across the following critical parameters:

• Display driver functionality for LED, LCD, and VF display types
• Dot/bar display configuration with 10-step output
• Supply voltage range: 3V to 20V
• Supply current specification: 6.1 mA
• Operating temperature range: 0°C to 70°C
• Package type: 20-PLCC (9x9) with J-Lead configuration
• Surface mount mounting type
• Moisture sensitivity classification: 2A (4 Weeks)

The LM3914V/NOPB is identified as a direct substitute based on identical electrical specifications, functional configuration, and physical packaging. The primary distinction between these parts is product status and compliance certification, not functional or electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

The LM3914V/NOPB serves as the direct functional equivalent to the LM3914V. Both parts maintain identical electrical and mechanical specifications across all critical parameters including supply voltage range, current consumption, operating temperature, and package configuration.

The LM3914V/NOPB is designated as Last Time Buy status, indicating limited future availability. The LM3914V/NOPB achieves ROHS3 compliance, whereas the original LM3914V is RoHS non-compliant. For new designs or systems requiring regulatory compliance with current environmental standards, the LM3914V/NOPB is the appropriate selection. For legacy system maintenance where RoHS compliance is not a requirement, either part is functionally interchangeable.

Frequently Asked Questions (FAQ)

Q: Can the LM3914V/NOPB be used as a direct replacement for the LM3914V?

A: Yes. The LM3914V/NOPB is electrically and mechanically identical to the LM3914V. Both parts share the same supply voltage range (3V to 20V), current consumption (6.1 mA), operating temperature range (0°C to 70°C), and 20-PLCC (9x9) package configuration. No circuit modifications are required for substitution.

Q: What is the difference between LM3914V and LM3914V/NOPB?

A: The primary differences are product status and RoHS compliance. The LM3914V is classified as obsolete and RoHS non-compliant. The LM3914V/NOPB is designated Last Time Buy and achieves ROHS3 compliance. Functionally and electrically, both parts are equivalent.

Q: Are there any package or pinout differences between these parts?

A: No. Both the LM3914V and LM3914V/NOPB use the identical 20-PLCC (9x9) J-Lead package with surface mount configuration. Pinout and mechanical dimensions are identical.

Q: Which part should be selected for new designs?

A: The LM3914V/NOPB is the appropriate choice for new designs due to ROHS3 compliance and Last Time Buy status, which provides a defined procurement window. The LM3914V, being obsolete, should not be specified for new applications.

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

A: Both parts carry a Moisture Sensitivity Level (MSL) classification of 2A with a 4-week floor life. Standard moisture control procedures during storage and handling are required to maintain component reliability.