CD4077BM Equivalent & Substitute Parts

Part Overview

The CD4077BM is a XNOR (Exclusive NOR) logic IC manufactured by Texas Instruments, featuring 4 channels with 2 inputs per channel in a 14-SOIC surface mount package. This part is designated as Last Time Buy, indicating it is no longer in active production. Finding equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring XNOR gate functionality.

Substiute Parts

CD4077BM

Texas InstrumentsIn Stock: 1174CD4077BM Datasheet

Current PartRFQ

CD4077BM96

Texas InstrumentsIn Stock: 2879CD4077BM96 Datasheet

MFR RecommendedRFQ

MC14077BDR2G

Fairchild SemiconductorIn Stock: 7733MC14077BDR2G Datasheet

DirectRFQ

HEF4077BT,653

Nexperia USA Inc.In Stock: 3281HEF4077BT,653 Datasheet

MFR RecommendedRFQ

MC14077BDG

onsemiIn Stock: 2170MC14077BDG Datasheet

MFR RecommendedRFQ

NLV14077BDG

onsemiIn Stock: 1106NLV14077BDG Datasheet

MFR RecommendedRFQ

NLV14077BDR2G

onsemiIn Stock: 877NLV14077BDR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CD4077BM is determined by the following critical parameters:

• Logic Type: XNOR (Exclusive NOR) with 4 channels and 2 inputs per channel
• Package: 14-SOIC surface mount form factor
• Supply Voltage Range: Minimum 3V to 18V compatibility
• Operating Temperature Range: -55°C to 125°C
• Electrical Characteristics: Output current drive and propagation delay within acceptable tolerances

Substitute parts are grouped into two categories:

Category 1 - Direct Texas Instruments Variants: Parts sharing identical base product number (CD4077) with different packaging configurations.

Category 2 - Cross-Manufacturer Equivalents: Parts from Fairchild Semiconductor, Nexperia USA Inc., and onsemi that meet the same functional and electrical specifications within defined parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

Preferred Primary Substitute: CD4077BM96 (Texas Instruments)

CD4077BM96 is the recommended substitute as it maintains identical electrical specifications to the CD4077BM while offering Active product status. This part is sourced in Cut Tape and Digi-Reel packaging formats, ensuring continued availability. Both parts are ROHS3 compliant with equivalent moisture sensitivity levels.

Secondary Substitutes - Cross-Manufacturer Options:

MC14077BDG (onsemi) and MC14077BDR2G (Fairchild Semiconductor) are functionally equivalent with Active status. These parts exhibit higher output current drive (8.8mA versus 3.4mA) and slightly increased propagation delay (110ns versus 100ns), which remain within acceptable tolerances for most XNOR gate applications. Both maintain the full -55°C to 125°C operating temperature range and 3V to 18V supply voltage compatibility.

Alternative with Reduced Temperature Range: HEF4077BT,653 (Nexperia USA Inc.)

This part operates within a narrower temperature range (-40°C to 85°C) and supply voltage range (3V to 15V). Selection of this part is appropriate only when application requirements fall within these reduced specifications. The HEF4077BT,653 offers superior propagation delay performance (55ns) and lower quiescent current (4 µA).

Not Recommended: NLV14077BDG (onsemi)

This part carries Obsolete product status and should not be selected for new designs or long-term supply chain planning.

Frequently Asked Questions (FAQ)

Q: Can CD4077BM96 be used as a direct replacement for CD4077BM?

A: Yes. CD4077BM96 maintains identical electrical specifications including supply voltage range (3V ~ 18V), quiescent current (1 µA), output current drive (3.4mA), and propagation delay (100ns @ 15V, 50pF). The primary difference is packaging format (Cut Tape/Digi-Reel versus Tube) and product status (Active versus Last Time Buy).

Q: What are the key differences between MC14077BDG and CD4077BM?

A: Both parts are XNOR logic ICs with 4 channels and 2 inputs per channel in 14-SOIC packages. MC14077BDG exhibits higher output current drive (8.8mA versus 3.4mA) and marginally increased propagation delay (110ns versus 100ns). Supply voltage range and operating temperature range remain identical. These differences are within acceptable tolerances for standard XNOR gate applications.

Q: Is HEF4077BT,653 suitable for all applications requiring CD4077BM?

A: HEF4077BT,653 is suitable only for applications where the operating temperature range does not exceed -40°C to 85°C and supply voltage remains within 3V to 15V. Applications requiring the full -55°C to 125°C temperature range or supply voltages above 15V must use alternative substitutes.

Q: What is the significance of packaging differences (Tube, Cut Tape, Tape & Reel)?

A: Packaging format affects procurement, handling, and assembly processes but does not impact electrical functionality. Tube packaging is suitable for manual assembly or lower-volume applications. Cut Tape and Tape & Reel formats are optimized for automated pick-and-place assembly. Selection should align with manufacturing process requirements.

Q: Are all substitute parts ROHS3 compliant?

A: CD4077BM, CD4077BM96, HEF4077BT,653, MC14077BDG, NLV14077BDG, and NLV14077BDR2G are all ROHS3 compliant. Compliance status ensures compatibility with environmental and regulatory requirements for electronic component manufacturing and disposal.

Q: Why is NLV14077BDG listed if it is Obsolete?

A: NLV14077BDG is included in the comparison for reference purposes only. Its Obsolete status indicates it is no longer manufactured and should not be selected for new designs or applications requiring long-term supply chain stability.