CD4043BPW Equivalent & Substitute Parts

Part Overview

The CD4043BPW is a quad S-R latch logic integrated circuit manufactured by Texas Instruments, housed in a 16-TSSOP surface mount package. This device provides four independent 1:1 S-R latch circuits with tri-state outputs, operating across a wide supply voltage range of 3V to 18V. The CD4043BPW is classified as obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production requirements. The CD4043BPWR serves as the direct manufacturer-recommended substitute, maintaining identical electrical and mechanical specifications while offering active product status and improved availability.

Substiute Parts

CD4043BPW

Texas InstrumentsIn Stock: 985CD4043BPW Datasheet

Current PartRFQ

CD4043BPWR

Texas InstrumentsIn Stock: 5145CD4043BPWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4043BPW with the CD4043BPWR is based on strict equivalence across all critical electrical and mechanical parameters. Both parts share identical specifications for logic type, circuit configuration, output characteristics, supply voltage range, propagation delay, output current ratings, operating temperature range, and physical package dimensions. The substitution is valid because the CD4043BPWR maintains the same base product number (CD4043) and supplier device package (16-TSSOP), ensuring pin-for-pin compatibility and functional interchangeability. The primary distinction is product status: the CD4043BPW is obsolete, while the CD4043BPWR is active, making the latter the appropriate choice for new designs and production continuity.

Parameter Comparison

Engineering Selection Recommendations

The CD4043BPWR is the appropriate selection for all applications currently using or specifying the CD4043BPW. This substitution is supported by complete electrical and mechanical equivalence, identical compliance certifications (ROHS3 and REACH), and active product status ensuring long-term availability. The CD4043BPWR is manufactured by Texas Instruments under the same 4000B series designation and maintains full compatibility with existing PCB layouts, assembly processes, and system designs. For new designs, the CD4043BPWR should be specified directly to ensure supply chain continuity and eliminate obsolescence risk.

Frequently Asked Questions (FAQ)

Q: Are the CD4043BPW and CD4043BPWR pin-for-pin compatible? A: Yes. Both parts use the 16-TSSOP package with identical pin assignments, enabling direct substitution without PCB modifications.

Q: What is the primary reason for substituting the CD4043BPW? A: The CD4043BPW is classified as obsolete. The CD4043BPWR is the active equivalent, ensuring continued availability and supply chain reliability.

Q: Do the electrical specifications differ between these parts? A: No. Both parts share identical electrical specifications including supply voltage range (3V ~ 18V), propagation delay (50ns), output current (6.8mA), and operating temperature range (-55°C ~ 125°C).

Q: Are there packaging differences between the CD4043BPW and CD4043BPWR? A: Both parts are supplied in 16-TSSOP surface mount packages with identical physical dimensions (0.173", 4.40mm width). The CD4043BPWR is available in Cut Tape (CT) and Digi-Reel packaging options.

Q: Do compliance certifications apply equally to both parts? A: Yes. Both the CD4043BPW and CD4043BPWR are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings.

Q: Can the CD4043BPWR be used in existing designs without redesign? A: Yes. Complete functional and mechanical equivalence permits direct substitution in existing designs without circuit modifications or PCB layout changes.