CD4050BDRG4 Equivalent & Substitute Parts

Part Overview

The CD4050BDRG4 is a non-inverting buffer IC from Texas Instruments, part of the 4000B logic series. This device provides 6 independent buffer elements with push-pull outputs, designed for signal conditioning and level shifting applications across a wide voltage range of 3V to 18V. The CD4050BDRG4 is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design requirements and production needs.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD4050BDRG4
Manufacturer	Texas Instruments
Logic Type	Buffer, Non-Inverting
Number of Elements	6
Output Type	Push-Pull
Current - Output High, Low	8mA, 48mA
Voltage - Supply	3V ~ 18V
Operating Temperature	-55°C ~ 125°C (TA)
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the CD4050BDRG4 are grouped based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

Logic Type: Buffer, Non-Inverting
Number of Elements: 6
Number of Bits per Element: 1
Output Type: Push-Pull
Package / Case: 16-SOIC form factor
Voltage - Supply: 3V ~ 18V range
Mounting Type: Surface Mount

Secondary Considerations:

Current output ratings (High/Low)
Operating temperature range
Product status and availability
RoHS and compliance certifications

Parts are classified as direct substitutes when all primary criteria match. Parametric equivalents may have minor variations in output current or temperature range but maintain functional compatibility within the specified voltage and package constraints.

Parameter Comparison

Part Number	Manufacturer	Logic Type	Elements	Output Type	Current High/Low (mA)	Voltage Supply	Temp Range (°C)	Package	Status
CD4050BDRG4	Texas Instruments	Buffer, Non-Inverting	6	Push-Pull	8, 48	3V ~ 18V	-55 ~ 125	16-SOIC	Discontinued
CD4050BDR	Texas Instruments	Buffer, Non-Inverting	6	Push-Pull	8, 48	3V ~ 18V	-55 ~ 125	16-SOIC	Active
CD4050BDT	Texas Instruments	Buffer, Non-Inverting	6	Push-Pull	8, 48	3V ~ 18V	-55 ~ 125	16-SOIC	Discontinued
MC14050BDR2G	onsemi	Buffer, Non-Inverting	6	Push-Pull	10, 40	3V ~ 18V	-55 ~ 125	16-SOIC	Active
HEF4050BT,653	Nexperia USA Inc.	Buffer, Non-Inverting	6	Push-Pull	3, 20	3V ~ 15V	-40 ~ 85	16-SOIC	Active
MC14050BDG	Fairchild Semiconductor	Buffer	6	Push-Pull	—	—	—	Bulk	Active
NLV14050BDR2G	onsemi	Buffer, Non-Inverting	6	Push-Pull	10, 40	3V ~ 18V	-55 ~ 125	16-SOIC	Active
TC4050BF(EL,N,F)	Toshiba Semiconductor and Storage	Buffer, Non-Inverting	6	Push-Pull	8, 48	3V ~ 18V	-40 ~ 85	16-SOIC	Active

Engineering Selection Recommendations

Preferred Direct Substitute (Texas Instruments): CD4050BDR is the manufacturer-recommended substitute. It maintains identical electrical specifications to the CD4050BDRG4 with matching output current ratings (8mA, 48mA), full voltage range (3V ~ 18V), and extended temperature range (-55°C ~ 125°C). This part is currently active and available in Tape & Reel packaging.

Alternative Substitutes (Full Compatibility): NLV14050BDR2G (onsemi) and MC14050BDR2G (onsemi) provide complete functional equivalence with identical voltage supply range and temperature specifications. These parts feature slightly different output current ratings (10mA, 40mA) but remain within acceptable operating parameters for most applications. NLV14050BDR2G includes AEC-Q100 automotive qualification.

Parametric Equivalent (Voltage/Temperature Constraints): HEF4050BT,653 (Nexperia) is functionally equivalent but operates within a reduced voltage range (3V ~ 15V) and narrower temperature range (-40°C ~ 85°C). This part is suitable only for applications not requiring the full 18V supply capability or extended low-temperature operation below -40°C.

Alternative Packaging Option: TC4050BF(EL,N,F) (Toshiba) matches electrical specifications but uses a 16-SOP package (5.30mm width) instead of the standard 16-SOIC (3.90mm width). PCB layout modifications are required for this substitution.

Compliance Status: All recommended substitutes maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can CD4050BDR directly replace CD4050BDRG4? A: Yes. CD4050BDR is the manufacturer-recommended substitute with identical electrical specifications, package dimensions, and pin configuration. The primary difference is product status (active vs. discontinued) and packaging format (Tape & Reel vs. Cut Tape).

Q: What is the difference between CD4050BDR and NLV14050BDR2G? A: Both parts are functionally equivalent with matching voltage supply (3V ~ 18V) and temperature range (-55°C ~ 125°C). Output current ratings differ slightly (8mA/48mA vs. 10mA/40mA). NLV14050BDR2G includes AEC-Q100 automotive qualification, making it suitable for automotive applications.

Q: Can HEF4050BT,653 be used in all applications requiring CD4050BDRG4? A: No. HEF4050BT,653 operates at reduced maximum voltage (15V vs. 18V) and narrower temperature range (-40°C to 85°C vs. -55°C to 125°C). Use this part only when application requirements fall within these reduced specifications.

Q: Are there package compatibility issues with TC4050BF(EL,N,F)? A: Yes. TC4050BF(EL,N,F) uses a 16-SOP package (5.30mm width) versus the standard 16-SOIC (3.90mm width). PCB footprint and layout modifications are required. Pin configuration remains compatible.

Q: Which substitute offers the best availability? A: CD4050BDR (Texas Instruments) is the primary recommendation with active product status. MC14050BDR2G and NLV14050BDR2G (onsemi) also maintain active status with substantial inventory levels.

Q: Do all substitutes meet RoHS compliance? A: Yes. All listed substitutes maintain ROHS3 compliance and MSL Level 1 rating, meeting standard environmental and manufacturing requirements.

Q: What output current differences exist between substitutes? A: CD4050BDR and TC4050BF(EL,N,F) provide 8mA high / 48mA low output current. MC14050BDR2G and NLV14050BDR2G provide 10mA high / 40mA low output current. HEF4050BT,653 provides reduced output current at 3mA high / 20mA low. Select based on specific load requirements.

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