CD4034BE Equivalent & Substitute Parts

Part Overview

The CD4034BE is a CMOS bidirectional shift register manufactured by Texas Instruments, designed for 8-bit data manipulation in logic applications. This device operates across a wide supply voltage range of 3V to 18V and supports operating temperatures from -55°C to 125°C. The CD4034BE is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part is available in 24-DIP through-hole packaging and maintains ROHS3 compliance with unlimited moisture sensitivity rating.

Substiute Parts

CD4034BE

Texas InstrumentsIn Stock: 1108CD4034BE Datasheet

Current PartRFQ

CD4034BM

Texas InstrumentsIn Stock: 1431CD4034BM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4034BE is determined by functional equivalence across core electrical and mechanical parameters. The CD4034BM qualifies as a direct substitute based on the following criteria:

• Identical logic type, element count, and bit configuration (Register, Bidirectional, 1 Element, 8 Bit)
• Matching output type (Push-Pull) and universal function
• Identical supply voltage range (3V ~ 18V) and operating temperature range (-55°C ~ 125°C)
• Same base product number (CD4034) and series designation (4000B)
• Equivalent compliance certifications (ROHS3, REACH Unaffected, EAR99)
• Identical moisture sensitivity rating (MSL 1)

The primary difference between these parts is packaging format: CD4034BE uses 24-DIP through-hole mounting, while CD4034BM uses 24-SOIC surface-mount packaging. This distinction affects board layout and assembly methodology but does not alter electrical functionality or performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The CD4034BM is the manufacturer-recommended substitute for the obsolete CD4034BE. Both devices share identical electrical specifications and functional characteristics within the 4000B CMOS logic series. The CD4034BM maintains active product status with Texas Instruments, ensuring continued availability and manufacturing support.

Selection between these parts depends on board design requirements. The CD4034BE (24-DIP through-hole) is suitable for breadboard prototyping, legacy system repairs, and applications requiring through-hole mounting. The CD4034BM (24-SOIC surface-mount) is appropriate for modern PCB designs, space-constrained applications, and automated assembly processes.

Both parts satisfy ROHS3 compliance and REACH requirements, making either suitable for applications subject to environmental regulations. The identical MSL rating (1) indicates both parts have unlimited shelf life under standard storage conditions.

Frequently Asked Questions (FAQ)

Q: Can CD4034BM directly replace CD4034BE in existing designs?

A: Electrical substitution is direct. The CD4034BM provides identical logic functionality, supply voltage range, operating temperature range, and output characteristics. Physical substitution requires board redesign due to different mounting types (surface-mount versus through-hole) and package footprints.

Q: Why is the CD4034BE classified as obsolete?

A: The CD4034BE is an older through-hole package variant. Texas Instruments has transitioned manufacturing focus to surface-mount alternatives like the CD4034BM to align with modern PCB assembly standards and market demand.

Q: Are there any electrical performance differences between CD4034BE and CD4034BM?

A: No. Both devices operate identically across all specified electrical parameters: supply voltage (3V ~ 18V), operating temperature (-55°C ~ 125°C), logic type, element count, bit configuration, and output type.

Q: What is the significance of the different HTSUS codes?

A: HTSUS codes reflect tariff classification based on packaging format. CD4034BE (8542.39.0001) and CD4034BM (8542.39.0060) are classified under different subcategories due to through-hole versus surface-mount packaging, but both remain within the same general semiconductor classification.

Q: Can I use CD4034BM in a through-hole socket designed for CD4034BE?

A: No. The CD4034BM uses 24-SOIC surface-mount packaging and cannot be physically installed in a 24-DIP through-hole socket. Board redesign or adapter solutions would be required.

Q: Are both parts available in the same quantities?

A: Availability varies. CD4034BE inventory is limited due to obsolete status. CD4034BM is actively manufactured and typically available in higher quantities from authorized distributors.