CD4089BNSR Equivalent & Substitute Parts

Part Overview

The CD4089BNSR is a Binary Rate Multiplier logic IC manufactured by Texas Instruments, part of the 4000B series. This component is classified as obsolete, indicating it is no longer in active production. The CD4089BNSR is a 16-pin surface mount device in 16-SOIC packaging, designed for applications requiring binary rate multiplication functionality across a supply voltage range of 3V to 18V.

Due to its obsolete status, identifying functionally equivalent substitute parts is essential for system redesign, board revision, or inventory replenishment. Substitute parts must maintain identical electrical specifications and compatible physical packaging to ensure direct replacement capability.

Substiute Parts

CD4089BNSR

Texas InstrumentsIn Stock: 2842CD4089BNSR Datasheet

Current PartRFQ

CD4089BPWR

Texas InstrumentsIn Stock: 2953CD4089BPWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4089BNSR is determined by the following critical parameters:

• Logic Function: Binary Rate Multiplier with 4-bit configuration
• Electrical Specifications: Supply voltage 3V ~ 18V, operating temperature -55°C ~ 125°C
• Series Compatibility: 4000B logic family
• Compliance Requirements: ROHS3 compliance, REACH unaffected status
• Mounting Technology: Surface mount configuration

The CD4089BPWR qualifies as a manufacturer-recommended substitute because it maintains identical electrical specifications, logic function, bit configuration, and compliance certifications. The primary difference is packaging format: the substitute uses 16-TSSOP instead of 16-SOIC, which affects board layout and assembly considerations but does not alter electrical performance or functional capability.

Parameter Comparison

Engineering Selection Recommendations

The CD4089BPWR is the manufacturer-recommended substitute for the obsolete CD4089BNSR. Both parts maintain identical electrical performance specifications and comply with ROHS3 and REACH requirements, ensuring regulatory compliance across applications.

The primary consideration for selection is packaging format. The CD4089BPWR uses 16-TSSOP packaging with a narrower body width (4.40mm versus 5.30mm), which may require board layout modification and assembly process adjustment. However, electrical functionality and performance characteristics remain unchanged.

The CD4089BPWR is currently in active production status, ensuring long-term availability and supply chain stability compared to the obsolete CD4089BNSR.

Frequently Asked Questions (FAQ)

Q: Can the CD4089BPWR directly replace the CD4089BNSR without circuit modification?

A: Electrical substitution is direct. Both parts operate identically across the 3V ~ 18V supply range and -55°C ~ 125°C temperature range. However, physical board layout must accommodate the different package dimensions: 16-TSSOP (4.40mm width) versus 16-SOIC (5.30mm width). Pin-to-pin functionality is equivalent.

Q: What is the primary difference between these two parts?

A: The CD4089BNSR uses 16-SOIC packaging, while the CD4089BPWR uses 16-TSSOP packaging. Both are surface mount formats with identical pin counts and electrical specifications. The TSSOP package is narrower and may require footprint redesign on the PCB.

Q: Why is the CD4089BNSR listed as obsolete?

A: The CD4089BNSR has reached end-of-life status in Texas Instruments' product portfolio. The CD4089BPWR in 16-TSSOP packaging represents the active production alternative within the same 4000B logic family.

Q: Are there compliance or regulatory differences between these parts?

A: No. Both parts maintain identical ROHS3 compliance and REACH unaffected status, ensuring equivalent regulatory qualification for applications requiring these certifications.

Q: What inventory considerations apply to substitution?

A: The CD4089BNSR has 2765 units available as new original stock. The CD4089BPWR has 2858 units available as new original stock in active production status, providing greater long-term availability assurance.