CD4063BM Equivalent & Substitute Parts

Part Overview

The CD4063BM is a 4-bit magnitude comparator logic integrated circuit manufactured by Texas Instruments in the 4000B series. It performs digital comparison operations with three output functions: A<B, A=B, and A>B, with active high output logic levels. The device operates across a wide supply voltage range of 3V to 18V and is housed in a 16-SOIC surface mount package.

The CD4063BM carries a Last Time Buy product status, indicating that Texas Instruments has discontinued this part number. Identifying equivalent substitute parts is necessary to ensure continued availability for new designs, production runs, and field replacements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Type	Magnitude Comparator
Number of Bits	4
Output Function	A<B, A=B, A>B
Output Logic	Active High
Voltage - Supply	3V ~ 18V
Current - Output High, Low	4.2mA, 4.2mA
Max Propagation Delay @ V, Max CL	350ns @ 15V, 50pF
Current - Quiescent (Iq)	100 µA
Operating Temperature	-55°C ~ 125°C
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

Substitution of the CD4063BM is determined by strict equivalence across the following critical parameters:

Functional Type: 4-bit magnitude comparator with identical output functions (A<B, A=B, A>B)
Output Logic Level: Active high output configuration
Electrical Specifications: Supply voltage range, output current ratings, propagation delay, and quiescent current must match or exceed the original specification
Package Compatibility: 16-SOIC surface mount package with identical pin configuration and mechanical dimensions
Environmental Compliance: RoHS3 compliance and MSL rating must be maintained
Series Designation: Parts must belong to the Texas Instruments 4000B logic series

The CD4063BM96 meets all substitution criteria as a direct equivalent part number variant within the same product family.

Parameter Comparison

Parameter	CD4063BM	CD4063BM96	Match
Type	Magnitude Comparator	Magnitude Comparator	✓
Number of Bits	4	4	✓
Output Function	A<B, A=B, A>B	A<B, A=B, A>B	✓
Output Logic	Active High	Active High	✓
Voltage - Supply	3V ~ 18V	3V ~ 18V	✓
Current - Output High, Low	4.2mA, 4.2mA	4.2mA, 4.2mA	✓
Max Propagation Delay @ V, Max CL	350ns @ 15V, 50pF	350ns @ 15V, 50pF	✓
Current - Quiescent (Iq)	100 µA	100 µA	✓
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	✓
Package / Case	16-SOIC (0.154", 3.90mm Width)	16-SOIC (0.154", 3.90mm Width)	✓
Mounting Type	Surface Mount	Surface Mount	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	✓

Engineering Selection Recommendations

The CD4063BM96 is the direct substitute for the CD4063BM. Both parts are manufactured by Texas Instruments within the 4000B logic series and maintain identical electrical and mechanical specifications across all critical parameters.

The primary distinction between these part numbers is packaging format: the CD4063BM is supplied in Tube packaging, while the CD4063BM96 is available in Cut Tape (CT) and Digi-Reel® packaging. This difference affects procurement and handling but does not impact electrical performance or functional compatibility.

The CD4063BM96 carries an Active product status, ensuring continued availability and manufacturing support from Texas Instruments. This substitution is suitable for new designs, production continuity, and field replacements where the CD4063BM is no longer available.

Both parts maintain ROHS3 compliance and MSL Level 1 rating, confirming compatibility with modern manufacturing processes and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can the CD4063BM96 be used as a direct replacement for the CD4063BM in existing designs?

A: Yes. The CD4063BM96 is electrically and mechanically identical to the CD4063BM. All functional parameters, electrical specifications, and package dimensions are equivalent. The only difference is the packaging format (Tube versus Cut Tape/Digi-Reel).

Q: What is the difference between Tube and Cut Tape packaging?

A: Tube packaging supplies components in plastic tubes for manual handling and small-quantity applications. Cut Tape and Digi-Reel packaging are designed for automated pick-and-place assembly equipment. The components themselves are identical; the packaging format differs only in handling and procurement convenience.

Q: Are there any compatibility concerns when substituting the CD4063BM with the CD4063BM96?

A: No compatibility concerns exist. Both parts use the identical 16-SOIC package with the same pin configuration, electrical characteristics, and operating specifications. PCB layouts, schematics, and assembly processes require no modification.

Q: Does the CD4063BM96 meet the same compliance standards as the CD4063BM?

A: Yes. The CD4063BM96 is ROHS3 compliant and carries MSL Level 1 rating, identical to the CD4063BM. Both parts meet the same environmental and regulatory requirements.

Q: Why is the CD4063BM marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has discontinued the CD4063BM part number. The CD4063BM96 remains in active production and is the recommended substitute for continued component availability.

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