CD4070BCN Equivalent & Substitute Parts

Part Overview

The CD4070BCN is a 4-channel XOR (Exclusive OR) logic integrated circuit manufactured by onsemi in the 4000B series. This device implements four independent 2-input XOR gates in a 14-pin DIP package and operates across a wide supply voltage range of 3V to 15V. The CD4070BCN is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and component procurement.

Key Parameters

Parameter	Value
Logic Type	XOR (Exclusive OR)
Number of Circuits	4
Number of Inputs	2
Voltage - Supply	3V ~ 15V
Current - Quiescent (Max)	1 µA
Current - Output High, Low	3.4mA, 3.4mA
Operating Temperature	-55°C ~ 125°C
Package / Case	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the CD4070BCN is determined by strict equivalence across the following critical parameters:

Logic function: 4-channel XOR gate with 2 inputs per channel
Supply voltage compatibility: Minimum 3V, maximum 15V overlap
Output drive capability: 3.4mA per output
Quiescent current: 1 µA maximum
Operating temperature range: -55°C to 125°C
Package form factor: 14-pin DIP with 0.300" (7.62mm) pitch
Mounting technology: Through-hole configuration

The CD4070BE from Texas Instruments meets all these criteria and is classified as an active product, providing long-term availability and supply continuity.

Parameter Comparison

Parameter	CD4070BCN (onsemi)	CD4070BE (Texas Instruments)
Logic Type	XOR (Exclusive OR)	XOR (Exclusive OR)
Number of Circuits	4	4
Number of Inputs	2	2
Voltage - Supply	3V ~ 15V	3V ~ 18V
Current - Quiescent (Max)	1 µA	1 µA
Current - Output High, Low	3.4mA, 3.4mA	3.4mA, 3.4mA
Input Logic Level - Low	1.5V ~ 4V	1.5V ~ 4V
Input Logic Level - High	4.6V ~ 11V	4.6V ~ 11V
Max Propagation Delay @ V, Max CL	75ns @ 15V, 50pF	100ns @ 15V, 50pF
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C
Package / Case	14-DIP (0.300", 7.62mm)	14-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole
Product Status	Obsolete	Active
RoHS Status	Not specified	ROHS3 Compliant

Engineering Selection Recommendations

The CD4070BE from Texas Instruments is the direct functional equivalent for CD4070BCN replacement. Both devices share identical logic architecture, pin configuration, and electrical performance within the specified operating ranges. The CD4070BE offers extended supply voltage tolerance (3V to 18V versus 3V to 15V) and maintains full backward compatibility with existing CD4070BCN designs.

The CD4070BE is classified as an active product with ROHS3 compliance, ensuring continued availability and regulatory alignment for new designs and production runs. The obsolete status of the CD4070BCN makes the CD4070BE the recommended selection for component procurement and design updates.

Frequently Asked Questions (FAQ)

Q: Can CD4070BE directly replace CD4070BCN in existing circuits?

A: Yes. Both devices implement identical XOR logic functions with matching pin assignments, electrical characteristics, and package dimensions. The CD4070BE operates across a wider supply voltage range (3V to 18V) while maintaining full compatibility with CD4070BCN specifications.

Q: What is the difference in propagation delay between these parts?

A: The CD4070BCN specifies 75ns maximum propagation delay at 15V with 50pF load, while the CD4070BE specifies 100ns under identical conditions. Both values fall

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