CD4044BDWR Equivalent & Substitute Parts

Part Overview

The CD4044BDWR is a quad S-R latch logic integrated circuit manufactured by Texas Instruments, housed in a 16-SOIC surface mount package. This device functions as a 4-channel set-reset latch with tri-state output capability, operating across a wide supply voltage range of 3V to 18V. The part is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and procurement planning.

Substiute Parts

CD4044BDWR

Texas InstrumentsIn Stock: 947CD4044BDWR Datasheet

Current PartRFQ

CD4043BDWR

Texas InstrumentsIn Stock: 977CD4043BDWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD4044BDWR is determined by the following critical parameters that must remain constant:

• Logic Type: S-R Latch (4-channel configuration)
• Circuit Configuration: 1:1
• Output Type: Tri-State
• Supply Voltage Range: 3V ~ 18V
• Independent Circuits: 4
• Propagation Delay: 50ns
• Output Current Capability: 6.8mA (both high and low)
• Operating Temperature Range: -55°C ~ 125°C
• Package Type: 16-SOIC surface mount
• Pin Compatibility: Identical pinout required

The CD4043BDWR qualifies as a parametric equivalent based on matching all critical electrical and mechanical specifications. Both devices belong to the Texas Instruments 4000B logic series and share identical functional parameters, supply voltage characteristics, output drive capabilities, and thermal operating range.

Parameter Comparison

Engineering Selection Recommendations

The CD4043BDWR is a direct parametric equivalent to the CD4044BDWR for applications requiring quad S-R latch functionality with tri-state outputs. Both devices maintain identical electrical specifications, thermal characteristics, and physical packaging, ensuring pin-for-pin compatibility in 16-SOIC surface mount applications.

The primary distinction between these components is product status: the CD4044BDWR is obsolete, while the CD4043BDWR maintains active production status. Both devices carry ROHS3 compliance and REACH unaffected certification, meeting current environmental and regulatory requirements.

Selection of the CD4043BDWR is appropriate for new designs, redesigns, or replacement of obsolete inventory where the CD4044BDWR is no longer available through standard procurement channels.

Frequently Asked Questions (FAQ)

Q: Can the CD4043BDWR replace the CD4044BDWR in existing designs?

A: Yes. Both devices share identical electrical parameters, supply voltage range, output drive capability, propagation delay, and operating temperature specifications. The 16-SOIC package pinout is identical, enabling direct substitution without circuit modification.

Q: What is the primary reason for substitution?

A: The CD4044BDWR is classified as obsolete. The CD4043BDWR, with matching specifications and active production status, serves as the recommended alternative for procurement and design continuity.

Q: Are there package alternatives available?

A: Both the main part and substitute are specified in 16-SOIC surface mount packaging only. No alternative package options are provided in the parametric data.

Q: Do both parts meet current compliance standards?

A: Yes. Both the CD4044BDWR and CD4043BDWR are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What are the critical parameters that must match for substitution?

A: Supply voltage range (3V ~ 18V), logic type (S-R Latch), circuit configuration (4-channel, 1:1), output type (tri-state), propagation delay (50ns), output current (6.8mA), operating temperature range (-55°C ~ 125°C), and 16-SOIC package type must all remain constant.