74AHC244D,112 Equivalent & Substitute Parts

Part Overview

The 74AHC244D,112 is a non-inverting buffer logic IC manufactured by Nexperia USA Inc., designed for 2-element, 4-bit per element configurations with 3-state output capability. This component operates across a 2V to 5.5V supply voltage range and is housed in a 20-SOIC surface mount package. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

74AHC244D,112

Nexperia USA Inc.In Stock: 118374AHC244D,112 Datasheet

Current PartRFQ

SN74AHC244QDWRG4

Texas InstrumentsIn Stock: 723SN74AHC244QDWRG4 Datasheet

DirectRFQ

SN74AHC244QDWRG4Q1

Texas InstrumentsIn Stock: 2596SN74AHC244QDWRG4Q1 Datasheet

DirectRFQ

SN74AHC244QDWRQ1

Texas InstrumentsIn Stock: 5183SN74AHC244QDWRQ1 Datasheet

DirectRFQ

MC74VHC244DWR2G

onsemiIn Stock: 2090MC74VHC244DWR2G Datasheet

UpgradeRFQ

SN74AHC244MDWREP

Texas InstrumentsIn Stock: 767SN74AHC244MDWREP Datasheet

UpgradeRFQ

74VHC244M

Fairchild SemiconductorIn Stock: 907474VHC244M Datasheet

SimilarRFQ

74VHC244MX

Fairchild SemiconductorIn Stock: 1269174VHC244MX Datasheet

SimilarRFQ

SN74AHC244DWR

Texas InstrumentsIn Stock: 4060SN74AHC244DWR Datasheet

SimilarRFQ

SN74AHC244DW

Texas InstrumentsIn Stock: 2061SN74AHC244DW Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74AHC244D,112 is determined by strict equivalence across the following critical parameters:

• Logic type: Buffer, Non-Inverting
• Element and bit configuration: 2 elements, 4 bits per element
• Output type: 3-State
• Output current capability: 8mA high and low
• Supply voltage range: 2V ~ 5.5V minimum
• Package type: 20-SOIC form factor
• Mounting: Surface mount

Substitute parts are grouped into four categories based on product status and qualification level:

Direct Substitutes maintain identical electrical and mechanical specifications with the same base product number (74AHC244) and are available from alternative manufacturers or packaging variants.

Upgrade Substitutes offer enhanced specifications (extended temperature range or automotive qualification) while maintaining full backward compatibility with the original part's electrical requirements.

Similar Substitutes use the 74VHC series variant, which shares identical functional and electrical parameters but operates within a narrower temperature range (-40°C to 85°C).

Parametric Equivalents provide identical electrical performance with different packaging configurations (tube vs. tape & reel).

Parameter Comparison

Engineering Selection Recommendations

For Active Production Designs:

SN74AHC244QDWRQ1 (Texas Instruments) is the primary recommended substitute. This part maintains identical electrical specifications to the original 74AHC244D,112, carries active product status, includes AEC-Q100 automotive qualification, and is available in high inventory (5076 pcs). It is supplied in tape & reel packaging suitable for automated assembly.

For Extended Temperature Applications:

SN74AHC244MDWREP (Texas Instruments) or MC74VHC244DWR2G (onsemi) extend the operating temperature range to -55°C to 125°C, providing enhanced performance margin in extreme temperature environments while maintaining all other electrical parameters.

For Cost-Optimized Designs:

SN74AHC244DWR (Texas Instruments) offers active product status with standard -40°C to 125°C temperature range and is available in high volume (4044 pcs) at competitive pricing.

For Fairchild Semiconductor Preference:

74VHC244MX provides active status with 12,600 pcs inventory. Note that the operating temperature range is limited to -40°C to 85°C, which may not be suitable for applications requiring the full -40°C to 125°C range of the original part.

All recommended substitutes maintain ROHS3 compliance and are suitable for direct PCB replacement in 20-SOIC footprints.

Frequently Asked Questions (FAQ)

Q: Can I use 74VHC244M or 74VHC244MX as direct replacements for 74AHC244D,112?

A: Yes, electrically and mechanically. Both parts share identical logic type, element/bit configuration, output type, current ratings, and supply voltage specifications. The 74VHC series operates within a narrower temperature range (-40°C to 85°C versus -40°C to 125°C). If your application requires operation above 85°C, these parts are not suitable.

Q: What is the difference between SN74AHC244QDWRG4 and SN74AHC244QDWRQ1?

A: Both are Texas Instruments 74AHC244 variants in 20-SOIC packaging with identical electrical specifications. SN74AHC244QDWRQ1 includes AEC-Q100 automotive qualification and is currently active. SN74AHC244QDWRG4 is discontinued at DiGi Electronics. For new designs, SN74AHC244QDWRQ1 is preferred.

Q: Are there packaging differences between these substitutes?

A: Yes. All substitutes use the same 20-SOIC (0.295", 7.50mm Width) package footprint, ensuring PCB compatibility. Packaging variants differ in supplier format: tape & reel (TR), cut tape with Digi-Reel (CT), tube, or bulk. These differences affect procurement and assembly handling but not electrical or mechanical performance.

Q: Does the 74AHC244D,112 require any special handling or compliance considerations?

A: All listed substitutes maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory profile. Moisture sensitivity level (MSL) is 1 (unlimited) for most AHC variants and MSL 3 (168 hours) for MC74VHC244DWR2G. Standard ESD and moisture control practices apply.

Q: Which substitute offers the best long-term availability?

A: SN74AHC244QDWRQ1 (Texas Instruments, active status, 5076 pcs inventory) and 74VHC244MX (Fairchild Semiconductor, active status, 12,600 pcs inventory) both offer active product status with substantial inventory levels, supporting long-term design continuity.