CD4050BD Equivalent & Substitute Parts

Part Overview

The CD4050BD is a non-inverting buffer logic IC manufactured by Texas Instruments, designed for 6-element buffering with push-pull output capability. This device operates across a wide supply voltage range of 3V to 18V and supports operating temperatures from -55°C to 125°C. The CD4050BD is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design requirements and production needs. Alternative models from active manufacturers provide functional equivalence while maintaining compatibility with existing circuit designs.

Substiute Parts

CD4050BD

Texas InstrumentsIn Stock: 2353CD4050BD Datasheet

Current PartRFQ

CD4050BDR

Texas InstrumentsIn Stock: 18637CD4050BDR Datasheet

DirectRFQ

MC14050BDR2G

onsemiIn Stock: 2201MC14050BDR2G Datasheet

DirectRFQ

HEF4050BT,653

Nexperia USA Inc.In Stock: 10156HEF4050BT,653 Datasheet

MFR RecommendedRFQ

MC14050BDG

Fairchild SemiconductorIn Stock: 1000508MC14050BDG Datasheet

MFR RecommendedRFQ

NLV14050BDR2G

onsemiIn Stock: 3733NLV14050BDR2G Datasheet

MFR RecommendedRFQ

TC4050BF(EL,N,F)

Toshiba Semiconductor and StorageIn Stock: 5018TC4050BF(EL,N,F) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD4050BD are classified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Logic type and function (Buffer, Non-Inverting with 6 elements, 1 bit per element)
• Output configuration (Push-Pull)
• Supply voltage range (3V ~ 18V minimum requirement)
• Operating temperature range (-55°C ~ 125°C minimum requirement)
• Package type (16-SOIC surface mount)
• RoHS3 compliance status

Parts are grouped into two categories: direct substitutes that meet all primary parameters, and alternative substitutes with modified electrical specifications that require design verification for specific applications.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Full Parameter Match):

CD4050BDR from Texas Instruments is the primary direct substitute, maintaining identical electrical specifications and operating ranges as the CD4050BD. This part is currently active and available in tape and reel packaging, making it suitable for production environments requiring the original performance envelope.

Compatible Substitutes (Modified Specifications):

MC14050BDR2G and NLV14050BDR2G from onsemi maintain the full 3V to 18V supply voltage range and -55°C to 125°C operating temperature range. Output current specifications differ slightly (10mA high, 40mA low versus 8mA, 48mA), which remains within acceptable buffering parameters for most applications. NLV14050BDR2G includes AEC-Q100 automotive qualification and is suitable for automotive-grade applications.

TC4050BF(EL,N,F) from Toshiba maintains identical output current specifications (8mA, 48mA) and full supply voltage range (3V ~ 18V) but operates within a reduced temperature range (-40°C to 85°C). This part is suitable for commercial and industrial applications not requiring extended low-temperature operation.

HEF4050BT,653 from Nexperia is a reduced-specification alternative with limited supply voltage range (3V ~ 15V) and reduced operating temperature range (-40°C ~ 85°C). This part is suitable only for applications operating within these narrower specifications and should not be selected for designs requiring the full 18V supply capability or extended temperature range of the original CD4050BD.

All substitute parts maintain RoHS3 compliance and surface mount 16-SOIC packaging compatibility.

Frequently Asked Questions (FAQ)

Q: Can CD4050BDR directly replace CD4050BD in production?

A: Yes. CD4050BDR is manufactured by Texas Instruments and maintains identical electrical specifications, operating temperature range (-55°C to 125°C), supply voltage range (3V to 18V), and output current ratings (8mA, 48mA). The only difference is packaging format (tape and reel versus bulk), which does not affect circuit functionality.

Q: What is the difference between MC14050BDR2G and NLV14050BDR2G?

A: Both parts are manufactured by onsemi with identical electrical specifications and operating ranges. NLV14050BDR2G includes AEC-Q100 automotive qualification and is designated for automotive applications. MC14050BDR2G is suitable for general industrial and commercial applications. Output current specifications differ slightly from the original CD4050BD (10mA high, 40mA low versus 8mA, 48mA).

Q: Is HEF4050BT,653 suitable for all CD4050BD applications?

A: No. HEF4050BT,653 has reduced specifications: supply voltage limited to 3V ~ 15V (versus 3V ~ 18V) and operating temperature range limited to -40°C ~ 85°C (versus -55°C ~ 125°C). This part is suitable only for applications operating within these narrower ranges. Applications requiring 18V supply capability or extended low-temperature operation must use alternative substitutes.

Q: What are the output current differences among substitute parts?

A: CD4050BDR and TC4050BF(EL,N,F) maintain the original specifications (8mA high, 48mA low). MC14050BDR2G and NLV14050BDR2G provide slightly higher high-side current (10mA) and lower low-side current (40mA). HEF4050BT,653 provides reduced output current (3mA high, 20mA low). Selection depends on circuit load requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance status, ensuring compatibility with environmental and regulatory requirements.

Q: What packaging options are available for substitutes?

A: CD4050BDR is available in tape and reel (TR) and cut tape (CT) formats. MC14050BDR2G and NLV14050BDR2G are available in tape and reel format. TC4050BF(EL,N,F) is available in cut tape and digi-reel format. HEF4050BT,653 is available in tape and reel format. All maintain the 16-SOIC surface mount package footprint.