CD4033BPWR Equivalent & Substitute Parts

Part Overview

The CD4033BPWR is a decade counter IC manufactured by Texas Instruments, classified as a logic component in 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 CD4033BPWR is currently listed as obsolete, which necessitates identification of active equivalent parts for ongoing design requirements and production continuity.

Substiute Parts

CD4033BPWR

Texas InstrumentsIn Stock: 952CD4033BPWR Datasheet

Current PartRFQ

CD4026BPWR

Texas InstrumentsIn Stock: 3345CD4026BPWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The CD4026BPWR qualifies as a parametric equivalent to the CD4033BPWR based on the following critical parameters that determine functional substitutability:

• Logic Type: Both are decade counters
• Number of Bits per Element: Both are 5-bit counters
• Trigger Type: Both use positive edge triggering
• Reset: Both feature asynchronous reset
• Timing: Both employ synchronous timing
• Count Rate: Both support 16 MHz operation
• Voltage - Supply: Both operate across 3V to 18V
• Operating Temperature: Both rated -55°C to 125°C
• Package / Case: Both use 16-TSSOP (0.173", 4.40mm Width)
• Mounting Type: Both are surface mount devices
• Series: Both belong to the 4000B series
• RoHS Status: Both are ROHS3 compliant
• Moisture Sensitivity Level: Both rated MSL 1 (Unlimited)
• REACH Status: Both are REACH unaffected

The primary distinction is product status: CD4033BPWR is obsolete while CD4026BPWR is active, and packaging format differs (Tape & Reel versus Cut Tape & Digi-Reel).

Parameter Comparison

Engineering Selection Recommendations

The CD4026BPWR is the direct parametric equivalent for the obsolete CD4033BPWR. Both devices share identical electrical specifications, timing characteristics, and package geometry. The CD4026BPWR is currently in active production status, ensuring supply chain availability and long-term support.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for current manufacturing standards. The MSL 1 rating for both devices indicates unlimited moisture sensitivity protection, suitable for standard storage and handling conditions.

Selection of the CD4026BPWR over the CD4033BPWR is driven by product lifecycle considerations: the CD4033BPWR has reached end-of-life status, while the CD4026BPWR remains actively manufactured and supported by Texas Instruments.

Frequently Asked Questions (FAQ)

Q: Can the CD4026BPWR directly replace the CD4033BPWR in existing designs?

A: Yes. Both devices are identical in all critical electrical and mechanical parameters: logic type, bit width, trigger mechanism, voltage range, temperature rating, and 16-TSSOP package geometry. No circuit modifications are required.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?

A: Both are surface mount delivery formats. Tape & Reel is continuous reel packaging for automated assembly lines. Cut Tape & Digi-Reel provides smaller quantities in tape segments. The electrical component and package dimensions remain identical.

Q: Are there any compliance differences between these parts?

A: No. Both the CD4033BPWR and CD4026BPWR carry identical RoHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity ratings.

Q: Why is the CD4033BPWR listed as obsolete?

A: Product obsolescence reflects Texas Instruments' lifecycle management. The CD4026BPWR remains the active equivalent in the 4000B series decade counter family.

Q: What are the key parameters that define substitutability for decade counter ICs?

A: Logic type (decade counter), bit width (5-bit), trigger type (positive edge), reset mechanism (asynchronous), timing (synchronous), maximum count rate (16 MHz), supply voltage range (3V to 18V), operating temperature range (-55°C to 125°C), and package type (16-TSSOP) must all match for direct substitution.