CD4071BM OR Gate IC Equivalent & Substitute Parts

Part Overview

The CD4071BM is a 4-channel 2-input OR gate logic IC manufactured by Texas Instruments in 14-SOIC surface mount packaging. This part is discontinued at DiGi Electronics but remains available through inventory stock. The CD4071BM operates across a wide supply voltage range (3V to 18V) and is part of the 4000B CMOS logic series, making it suitable for general-purpose digital logic applications requiring OR gate functionality.

Due to the discontinued status of the CD4071BM, equivalent substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Suitable alternatives maintain identical logic functionality, package compatibility, and electrical performance within specified operating parameters.

Key Parameters

Parameter	Value
Logic Type	OR Gate
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	3V ~ 18V
Current - Quiescent (Max)	1 µA
Current - Output High, Low	3.4mA, 3.4mA
Input Logic Level - Low	1.5V ~ 4V
Input Logic Level - High	4.6V ~ 11V
Max Propagation Delay @ V, Max CL	90ns @ 15V, 50pF
Operating Temperature	-55°C ~ 125°C
Package / Case	14-SOIC (0.154", 3.90mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CD4071BM is determined by strict equivalence across the following critical parameters:

Functional Equivalence: All substitute parts must implement 4-channel 2-input OR gate logic with identical truth table behavior.

Electrical Compatibility: Supply voltage range, input logic levels, and operating temperature must encompass or match the original specification. Output current drive capability must be sufficient for the application.

Package Compatibility: All substitutes must use 14-SOIC surface mount packaging with identical pinout and mechanical dimensions (0.154", 3.90mm width).

Compliance & Status: All substitute parts must maintain ROHS3 compliance and MSL Level 1 rating. Active product status is preferred for long-term availability.

The following substitute parts meet these criteria:

CD4071BM96 (Texas Instruments) – Direct manufacturer variant with identical electrical specifications and active status
MC14071BDR2G (onsemi) – Cross-manufacturer equivalent with compatible electrical parameters
HEF4071BT,653 (Nexperia USA Inc.) – Manufacturer-recommended alternative with enhanced propagation delay performance
MC14071BDG (onsemi) – Cross-manufacturer equivalent in tube packaging
NLV14071BDR2G (onsemi) – Low-voltage variant maintaining full compatibility

Parameter Comparison

Parameter	CD4071BM	CD4071BM96	MC14071BDR2G	HEF4071BT,653	MC14071BDG	NLV14071BDR2G
Manufacturer	Texas Instruments	Texas Instruments	onsemi	Nexperia USA Inc.	onsemi	onsemi
Product Status	Discontinued	Active	Active	Active	Active	Active
Logic Type	OR Gate	OR Gate	OR Gate	OR Gate	OR Gate	OR Gate
Number of Circuits	4	4	4	4	4	4
Number of Inputs	2	2	2	2	2	2
Voltage - Supply	3V ~ 18V	3V ~ 18V	3V ~ 18V	3V ~ 15V	3V ~ 18V	3V ~ 18V
Current - Quiescent (Max)	1 µA	1 µA	1 µA	4 µA	1 µA	1 µA
Current - Output High, Low	3.4mA, 3.4mA	3.4mA, 3.4mA	8.8mA, 8.8mA	3.4mA, 3.4mA	8.8mA, 8.8mA	8.8mA, 8.8mA
Input Logic Level - Low	1.5V ~ 4V	1.5V ~ 4V	1.5V ~ 4V	1.5V ~ 4V	1.5V ~ 4V	1.5V ~ 4V
Input Logic Level - High	4.6V ~ 11V	4.6V ~ 11V	4.6V ~ 11V	4.6V ~ 11V	4.6V ~ 11V	4.6V ~ 11V
Max Propagation Delay @ V, Max CL	90ns @ 15V, 50pF	90ns @ 15V, 50pF	100ns @ 15V, 50pF	35ns @ 15V, 50pF	100ns @ 15V, 50pF	100ns @ 15V, 50pF
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: CD4071BM96

The CD4071BM96 is the direct Texas Instruments variant of the discontinued CD4071BM. It maintains identical electrical specifications, active product status, and full compliance certifications. This part provides the most direct replacement path with no design modifications required.

Secondary Recommendation: MC14071BDG

The MC14071BDG from onsemi offers equivalent functionality in tube packaging, matching the original CD4071BM packaging format. This part is active and maintains full ROHS3 compliance. Output current drive is higher (8.8mA vs. 3.4mA), which is compatible with the original specification and provides additional design margin.

Alternative Recommendation: HEF4071BT,653

The HEF4071BT,653 from Nexperia USA Inc. is a manufacturer-recommended substitute with superior propagation delay performance (35ns vs. 90ns). This part is suitable for applications requiring faster logic switching. The operating temperature range is limited to -40°C to 125°C, which is acceptable for most commercial and industrial applications. Higher quiescent current (4 µA vs. 1 µA) and reduced maximum supply voltage (15V vs. 18V) must be evaluated against application requirements.

Cross-Manufacturer Options: MC14071BDR2G and NLV14071BDR2G

Both onsemi parts (MC14071BDR2G and NLV14071BDR2G) provide active alternatives with higher output current drive capability. These parts are suitable for applications requiring increased fan-out or lower output impedance. All compliance and reliability ratings remain equivalent to the original specification.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for the CD4071BM?

A: Yes. All listed substitute parts are electrically and mechanically compatible with the CD4071BM. They implement identical 4-channel 2-input OR gate logic, use the same 14-SOIC package, and maintain equivalent compliance certifications. No PCB modifications or design changes are required.

Q: What is the difference between the CD4071BM96 and the original CD4071BM?

A: The CD4071BM96 is the active production variant from Texas Instruments with identical electrical specifications. The primary difference is product status: CD4071BM96 is active and available for new designs, while CD4071BM is discontinued. Both parts are functionally equivalent.

Q: Why do some substitute parts have higher output current (8.8mA vs. 3.4mA)?

A: Higher output current capability is a superset of the original specification and does not affect compatibility. Applications designed for 3.4mA output current will function correctly with parts rated for 8.8mA. This provides additional design margin and fan-out capability.

Q: Is the HEF4071BT,653 suitable for my application if it requires -55°C operation?

A: No. The HEF4071BT,653 operating temperature range is -40°C to 125°C. If your application requires -55°C operation, select from CD4071BM96, MC14071BDR2G, MC14071BDG, or NLV14071BDR2G, which all support -55°C to 125°C.

Q: Can I use the HEF4071BT,653 if my circuit operates at 18V supply voltage?

A: No. The HEF4071BT,653 maximum supply voltage is 15V. If your application requires 18V operation, select from CD4071BM96, MC14071BDR2G, MC14071BDG, or NLV14071BDR2G, which all support 3V to 18V supply voltage.

Q: What is the difference between tube and tape & reel packaging?

A: Tube packaging (CD4071BM, MC14071BDG) is used for lower-volume orders and manual assembly. Tape & reel packaging (CD4071BM96, MC14071BDR2G, HEF4071BT,653, NLV14071BDR2G) is used for automated pick-and-place assembly. Both formats contain identical parts; packaging selection depends on assembly process requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (unlimited) moisture sensitivity rating, matching the original CD4071BM certification status.

Q: Which substitute part has the fastest propagation delay?

A: The HEF4071BT,653 has the fastest propagation delay at 35ns (@ 15V, 50pF), compared to 90ns for the CD4071BM and 100ns for the onsemi variants. Select this part for timing-critical applications where faster logic switching is required.

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