CD4512BMT Equivalent & Substitute Parts

Part Overview

The CD4512BMT is a Data Selector/Multiplexer integrated circuit manufactured by Texas Instruments, configured as a 1 x 8:1 multiplexer in a 16-SOIC surface mount package. This part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design support and procurement. The CD4512BMT belongs to the 4000B logic series and operates across a wide supply voltage range of 3V to 18V with dual supply capability.

Substiute Parts

CD4512BMT

Texas InstrumentsIn Stock: 1979CD4512BMT Datasheet

Current PartRFQ

CD4512BM96

Texas InstrumentsIn Stock: 25487CD4512BM96 Datasheet

Parametric EquivalentRFQ

MC14512BDR2G

onsemiIn Stock: 2095MC14512BDR2G Datasheet

DirectRFQ

MC14512BDG

onsemiIn Stock: 1039MC14512BDG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CD4512BMT is determined by the following critical parameters:

• Functional equivalence: Type (Data Selector/Multiplexer), Circuit configuration (1 x 8:1), and Independent circuits (1)
• Electrical compatibility: Voltage supply range (3V ~ 18V), Operating temperature range (-55°C ~ 125°C), and Output current specifications
• Physical compatibility: Package type (16-SOIC), Mounting type (Surface Mount), and Package dimensions (0.154", 3.90mm Width)
• Compliance and certification: RoHS3 compliance, MSL rating, REACH status, and ECCN classification

Substitutes are grouped into three categories based on availability and product status: parametric equivalents with identical electrical specifications, direct manufacturer alternatives with minor electrical variations, and manufacturer-recommended obsolete options.

Parameter Comparison

Engineering Selection Recommendations

CD4512BM96 is the primary substitute for CD4512BMT. Both parts are manufactured by Texas Instruments, share identical electrical specifications (6.8mA output current, dual supply configuration), and are packaged in the same 16-SOIC form factor. CD4512BM96 maintains active product status with higher inventory availability (25,400 pcs) compared to the discontinued CD4512BMT. The only packaging difference is Cut Tape & Digi-Reel versus Tape & Reel format, which does not affect electrical or mechanical compatibility.

MC14512BDR2G (onsemi) is a direct manufacturer alternative with full functional equivalence. It operates within the same voltage and temperature ranges and uses the identical 16-SOIC package. The output current specification is higher (8.8mA versus 6.8mA), which does not create compatibility issues in applications designed for the CD4512BMT. MC14512BDR2G is currently active with 2,000 pcs in stock. The supply source differs (single supply versus dual supply), but both configurations support the 3V to 18V operating range.

MC14512BDG is a manufacturer-recommended option but carries obsolete product status. While electrically and mechanically equivalent to MC14512BDR2G, its discontinued status makes it unsuitable for new designs or long-term procurement strategies.

Frequently Asked Questions (FAQ)

Q: Can CD4512BM96 directly replace CD4512BMT in existing designs?

A: Yes. CD4512BM96 is a parametric equivalent with identical electrical specifications, operating temperature range, supply voltage range, and 16-SOIC package dimensions. The packaging format difference (Cut Tape & Digi-Reel versus Tape & Reel) does not affect circuit performance or PCB assembly compatibility.

Q: What is the difference between dual supply and single supply configurations in the MC14512BDR2G?

A: The CD4512BMT uses dual supply architecture, while MC14512BDR2G uses single supply. Both parts support the same 3V to 18V voltage range. The supply source difference reflects internal circuit design but does not prevent functional substitution in applications operating within the specified voltage parameters.

Q: Is the higher output current of MC14512BDR2G (8.8mA) a concern?

A: No. Higher output current capability is not a limitation for substitution. Applications designed for 6.8mA output current will operate correctly with 8.8mA output capability. This represents improved performance margin rather than incompatibility.

Q: Why is MC14512BDG listed if it is obsolete?

A: MC14512BDG is included as a manufacturer-recommended reference point for historical design documentation. For new procurement and design work, CD4512BM96 or MC14512BDR2G are the appropriate active alternatives.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. CD4512BMT, CD4512BM96, MC14512BDR2G, and MC14512BDG are all ROHS3 compliant with MSL rating of 1 (Unlimited), ensuring compatibility with modern manufacturing and environmental standards.

Q: What is the recommended substitute for new designs?

A: CD4512BM96 is the recommended primary substitute, as it is manufactured by the same supplier (Texas Instruments) with identical electrical specifications and active product status. MC14512BDR2G is a qualified secondary option from onsemi with equivalent functionality.