CD4029BPW Equivalent & Substitute Parts

Part Overview

The CD4029BPW is a 4-bit binary counter IC manufactured by Texas Instruments, part of the 4000B logic series. This device functions as a binary/decade counter with up/down counting capability, designed for synchronous operation with positive edge triggering. The CD4029BPW is classified as obsolete, which necessitates identification of active equivalent parts for new designs and production continuity. The substitute part CD4029BPWR maintains identical electrical and mechanical specifications while offering active product status and improved availability.

Substiute Parts

CD4029BPW

Texas InstrumentsIn Stock: 852CD4029BPW Datasheet

Current PartRFQ

CD4029BPWR

Texas InstrumentsIn Stock: 4992CD4029BPWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The CD4029BPWR qualifies as a direct substitute for the CD4029BPW based on the following criteria:

Electrical Compatibility: Both parts share identical logic type (binary counter, decade), bit configuration (4-bit), counting direction (up/down), reset mechanism (asynchronous), timing mode (synchronous), maximum count rate (11 MHz), trigger type (positive edge), supply voltage range (3 V ~ 18 V), and operating temperature range (-55°C ~ 125°C).

Mechanical Compatibility: Both parts utilize the same package type (16-TSSOP) with identical physical dimensions (0.173", 4.40mm width) and surface mount mounting type, ensuring PCB layout compatibility without redesign.

Regulatory Compliance: Both parts maintain ROHS3 compliance, identical moisture sensitivity level (MSL 1), and REACH unaffected status, satisfying environmental and regulatory requirements.

Product Status Distinction: The primary difference is product status—CD4029BPW is obsolete while CD4029BPWR is active, making the latter the preferred selection for new designs and ongoing production.

Parameter Comparison

Engineering Selection Recommendations

The CD4029BPWR is the appropriate selection for all applications currently using or requiring the CD4029BPW counter IC. The substitute part maintains full electrical and mechanical compatibility while offering active product status, ensuring long-term availability and supply chain continuity. Both parts satisfy ROHS3 compliance and REACH regulatory requirements, supporting environmental standards for manufacturing and deployment.

For new designs, CD4029BPWR is the recommended part number. For existing designs using CD4029BPW, direct substitution is permissible without circuit modification or PCB redesign due to identical package geometry, pin configuration, and electrical characteristics.

Frequently Asked Questions (FAQ)

Q: Can CD4029BPWR be used as a direct replacement for CD4029BPW in existing designs?

A: Yes. Both parts are electrically and mechanically identical, sharing the same 16-TSSOP package, pin configuration, supply voltage range (3 V ~ 18 V), operating temperature range (-55°C ~ 125°C), and functional specifications. No circuit or PCB modifications are required.

Q: What is the primary reason for substitution?

A: The CD4029BPW is classified as obsolete, while the CD4029BPWR maintains active product status. Substitution ensures continued availability and supply chain reliability for production and new designs.

Q: Are there packaging differences between these parts?

A: The CD4029BPW is supplied in tube packaging, while the CD4029BPWR is supplied in tape and reel (TR) format. Both contain identical die and electrical specifications. Tape and reel packaging is standard for high-volume manufacturing and automated assembly processes.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both CD4029BPW and CD4029BPWR are ROHS3 compliant, maintain MSL 1 (unlimited moisture sensitivity level), and are REACH unaffected, satisfying environmental and regulatory requirements.

Q: What is the maximum count rate for these counter ICs?

A: Both parts support a maximum count rate of 11 MHz with positive edge triggering in synchronous mode.

Q: Are these parts suitable for supply voltages below 5V?

A: Yes. Both parts operate across a supply voltage range of 3 V ~ 18 V, supporting low-voltage applications down to 3V.