CD4042BDT Equivalent & Substitute Parts

Part Overview

The CD4042BDT is a quad clocked D-type transparent latch logic IC manufactured by Texas Instruments in a 16-SOIC surface mount package. This part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications. The CD4042BDT belongs to the 4000B logic series and provides four independent D-type transparent latch circuits with differential outputs suitable for digital logic applications requiring latching functionality across 3V to 18V supply ranges.

Substiute Parts

CD4042BDT

Texas InstrumentsIn Stock: 1341CD4042BDT Datasheet

Current PartRFQ

CD4042BDR

Texas InstrumentsIn Stock: 27855CD4042BDR Datasheet

Parametric EquivalentRFQ

MC14042BDG

onsemiIn Stock: 1964MC14042BDG Datasheet

MFR RecommendedRFQ

MC14042BDR2G

onsemiIn Stock: 6263MC14042BDR2G Datasheet

MFR RecommendedRFQ

NLV14042BDG

onsemiIn Stock: 933NLV14042BDG Datasheet

MFR RecommendedRFQ

NLV14042BDR2G

onsemiIn Stock: 3465NLV14042BDR2G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD4042BDT is determined by the following critical parameters: logic type (D-Type Transparent Latch), circuit configuration (4 independent channels), output type (Differential), supply voltage range (3V ~ 18V), package type (16-SOIC), and mounting method (Surface Mount). All substitute parts listed maintain these core electrical and mechanical specifications, ensuring functional compatibility in existing circuit designs.

Substitute parts are grouped into two categories based on performance characteristics:

Category 1 - Direct Parametric Equivalents: Parts with identical propagation delay (40ns) and output current specifications (6.8mA).

Category 2 - Functional Equivalents: Parts with slightly different propagation delay (60ns) and output current specifications (8.8mA) but maintaining all other critical parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CD4042BDR (Texas Instruments) is the recommended first choice. This part maintains identical electrical specifications to the CD4042BDT, including 40ns propagation delay and 6.8mA output current. The CD4042BDR is currently in active production status with substantial inventory availability (27800 pcs), ensuring supply chain continuity. Both parts share the same base product number (CD4042) and are ROHS3 compliant with identical moisture sensitivity ratings.

Secondary Substitutes: MC14042BDR2G and NLV14042BDR2G (both onsemi) are functionally equivalent alternatives with active product status. These parts operate within the same supply voltage range and package configuration but exhibit 60ns propagation delay and 8.8mA output current specifications. Selection of these alternatives is appropriate when CD4042BDR availability is constrained, provided circuit timing requirements accommodate the increased propagation delay.

Obsolete Alternatives: MC14042BDG and NLV14042BDG are obsolete products and should not be selected for new designs or production applications despite current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can CD4042BDR directly replace CD4042BDT without circuit modification?

A: Yes. CD4042BDR maintains identical electrical parameters (40ns propagation delay, 6.8mA output current) and package specifications (16-SOIC surface mount). No circuit modifications are required.

Q: What is the difference between CD4042BDR and MC14042BDR2G?

A: Both parts provide four independent D-type transparent latch circuits in 16-SOIC packages with identical supply voltage ranges (3V ~ 18V). The primary differences are propagation delay (40ns vs. 60ns) and output current (6.8mA vs. 8.8mA). MC14042BDR2G is suitable for applications where timing margins accommodate the longer delay.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity ratings, matching the original CD4042BDT specifications.

Q: What packaging options are available for substitutes?

A: CD4042BDR is available in Tape & Reel (TR) packaging. MC14042BDR2G is available in Cut Tape (CT) packaging. NLV14042BDR2G is available in Tape & Reel (TR) packaging. All maintain the 16-SOIC (0.154", 3.90mm Width) case format.

Q: Should I use obsolete parts like MC14042BDG or NLV14042BDG?

A: No. Obsolete products present supply chain risk and should not be selected for new production. Active status alternatives (CD4042BDR, MC14042BDR2G, NLV14042BDR2G) are recommended.