CD4033BPW Equivalent & Substitute Parts

Part Overview

The CD4033BPW is a decade counter logic IC manufactured by Texas Instruments, part of the 4000B series. This device functions as a 5-bit positive edge-triggered counter with asynchronous reset and synchronous timing, operating across a wide supply voltage range of 3V to 18V. The CD4033BPW is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. Substitute parts must maintain identical electrical characteristics and package specifications to ensure direct replacement capability.

Substiute Parts

CD4033BPW

Texas InstrumentsIn Stock: 1648CD4033BPW Datasheet

Current PartRFQ

CD4026BPWR

Texas InstrumentsIn Stock: 3345CD4026BPWR Datasheet

MFR RecommendedRFQ

CD4026BPW

Texas InstrumentsIn Stock: 1229CD4026BPW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CD4033BPW are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Logic Type: Counter, Decade
• Number of Elements: 1
• Number of Bits per Element: 5
• Count Rate: 16 MHz
• Trigger Type: Positive Edge
• Reset: Asynchronous
• Timing: Synchronous
• Voltage - Supply: 3V ~ 18V
• Operating Temperature: -55°C ~ 125°C
• Package / Case: 16-TSSOP (0.173", 4.40mm Width)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

The CD4033BPW has two identified substitutes: CD4026BPWR (MFR Recommended, Active status) and CD4026BPW (Parametric Equivalent, Last Time Buy status). Both parts share identical electrical specifications and package configuration, enabling direct functional replacement.

Parameter Comparison

Engineering Selection Recommendations

CD4026BPWR (Recommended Primary Substitute)

The CD4026BPWR is the manufacturer-recommended substitute for the obsolete CD4033BPW. This part maintains Active product status with Texas Instruments, ensuring long-term availability and supply chain stability. The CD4026BPWR is supplied in Cut Tape (CT) and Digi-Reel packaging formats, supporting both prototype and production-volume procurement. All electrical parameters, timing specifications, and package dimensions are identical to the CD4033BPW, enabling direct functional replacement without circuit modification.

CD4026BPW (Secondary Parametric Equivalent)

The CD4026BPW provides parametric equivalence to the CD4033BPW with identical electrical and mechanical specifications. This part carries Last Time Buy status, indicating limited future availability. The CD4026BPW is supplied in Tube packaging, suitable for lower-volume applications. Selection of this part should account for its declining availability status.

Both substitute parts satisfy ROHS3 compliance and REACH regulatory requirements, matching the original CD4033BPW specifications.

Frequently Asked Questions (FAQ)

Q: Can CD4026BPWR and CD4026BPW be used interchangeably with CD4033BPW?

A: Yes. Both parts are direct functional equivalents with identical electrical characteristics, count rate, trigger type, supply voltage range, operating temperature range, and 16-TSSOP package configuration. The primary difference is product status and packaging format.

Q: What is the difference between CD4026BPWR and CD4026BPW?

A: Both parts are parametrically identical. The CD4026BPWR is supplied in Cut Tape (CT) and Digi-Reel packaging with Active product status. The CD4026BPW is supplied in Tube packaging with Last Time Buy status. For new designs, CD4026BPWR is preferred due to its Active status and superior long-term availability.

Q: Are there any package compatibility concerns?

A: No. All three parts use the 16-TSSOP surface mount package with identical 0.173" width and 4.40mm dimensions. PCB footprints and reflow soldering profiles are compatible across all three parts.

Q: What compliance certifications apply to these substitutes?

A: All three parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Why is the CD4033BPW obsolete?

A: The CD4033BPW has been discontinued by Texas Instruments. The CD4026 series provides equivalent functionality and has replaced the CD4033 in the manufacturer's active product portfolio.