MM5453N LCD Driver IC - Equivalent & Substitute Parts

Part Overview

The MM5453N is a 7-segment LCD driver integrated circuit manufactured by Texas Instruments, designed for 4.5-digit display applications. This device operates as a serial interface LCD driver supporting 7-segment, alphanumeric, and bar graph display configurations. The MM5453N is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and production continuity.

Substiute Parts

MM5453N

Texas InstrumentsIn Stock: 2083MM5453N Datasheet

Current PartRFQ

MM5453V/NOPB

Texas InstrumentsIn Stock: 1060MM5453V/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MM5453N is determined by the following critical parameters:

• Functional Equivalence: Both parts must support 4.5-digit LCD display driving with 7-segment, alphanumeric, and bar graph configurations
• Interface Compatibility: Serial interface requirement must be maintained
• Electrical Specifications: Supply voltage range (3V ~ 10V) and operating temperature range (-40°C ~ 85°C) must be met or exceeded
• Base Product Number: Both parts share the MM5453 base designation, indicating core functional equivalence
• Manufacturer Consistency: Texas Instruments maintains design compatibility across the MM5453 product family

The MM5453V/NOPB qualifies as a direct substitute based on identical functional specifications, electrical parameters, and manufacturer lineage, despite differences in packaging format and mounting technology.

Parameter Comparison

Engineering Selection Recommendations

MM5453V/NOPB is the direct functional equivalent to MM5453N based on identical electrical specifications, display configuration, and interface requirements. Selection between these parts depends on design constraints:

• Through-Hole PCB Designs: MM5453N remains the appropriate choice if existing board layouts utilize 40-DIP through-hole footprints
• Surface-Mount PCB Designs: MM5453V/NOPB is required for 44-LCC surface-mount implementations
• Compliance Considerations: MM5453V/NOPB provides ROHS3 compliance, whereas MM5453N does not meet RoHS requirements
• Product Status: Both parts are end-of-life. MM5453V/NOPB carries Last Time Buy status, indicating limited remaining inventory availability

Functional compatibility is confirmed across all critical electrical and operational parameters. PCB layout and assembly process capabilities determine the appropriate package selection.

Frequently Asked Questions (FAQ)

Q: Can MM5453V/NOPB directly replace MM5453N in existing designs?

A: Functional replacement is confirmed. However, MM5453V/NOPB uses a 44-LCC surface-mount package versus the 40-DIP through-hole package of MM5453N. PCB redesign is required if the original design uses through-hole mounting. Pin-to-pin functional equivalence is maintained.

Q: What are the key differences between these parts?

A: The primary differences are packaging format (40-DIP through-hole versus 44-LCC surface-mount), RoHS compliance status (non-compliant versus ROHS3 compliant), and moisture sensitivity level (MSL 1 versus MSL 3). All electrical specifications and display driving capabilities are identical.

Q: Are there any electrical parameter differences?

A: No. Both parts operate identically across supply voltage (3V ~ 10V), operating temperature range (-40°C ~ 85°C), and all functional specifications for 4.5-digit LCD display driving with serial interface.

Q: What does "Last Time Buy" status mean for MM5453V/NOPB?

A: Last Time Buy indicates this is the final production run before permanent discontinuation. Inventory availability is limited. MM5453N is already classified as Obsolete, meaning production has ceased.

Q: Does the MSL rating difference affect substitution?

A: Moisture Sensitivity Level (MSL) affects storage and handling requirements. MM5453V/NOPB (MSL 3) requires controlled humidity storage for 168 hours maximum before reflow soldering. MM5453N (MSL 1) has unlimited shelf life. This is a handling consideration, not a functional limitation.

Q: Can I use MM5453V/NOPB in a through-hole design without modification?

A: No. The 44-LCC surface-mount package requires surface-mount assembly processes and PCB footprint redesign. Through-hole designs must use MM5453N or identify alternative through-hole LCD drivers from the MM5453 family.