CD74AC245M Equivalent & Substitute Parts

Part Overview

The CD74AC245M is a non-inverting transceiver logic IC manufactured by Texas Instruments, designed for 8-bit data bus applications with 3-state output capability. This device operates across a supply voltage range of 1.5V to 5.5V and supports operating temperatures from -55°C to 125°C. The part is currently in Last Time Buy status, making identification of equivalent and substitute components essential for ongoing design support and procurement planning.

Substiute Parts

CD74AC245M

Texas InstrumentsIn Stock: 2000CD74AC245M Datasheet

Current PartRFQ

CD74AC245M96

Texas InstrumentsIn Stock: 5308CD74AC245M96 Datasheet

MFR RecommendedRFQ

MC74AC245DWR2G

onsemiIn Stock: 4763MC74AC245DWR2G Datasheet

DirectRFQ

74AC245SCX

onsemiIn Stock: 328274AC245SCX Datasheet

MFR RecommendedRFQ

MC74AC245DWG

onsemiIn Stock: 2190MC74AC245DWG Datasheet

MFR RecommendedRFQ

CD74AC623M

Texas InstrumentsIn Stock: 1235CD74AC623M Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74AC245M is determined by the following critical parameters: logic type (non-inverting transceiver), element and bit configuration (1 element, 8 bits per element), output type (3-state), package format (20-SOIC), and electrical performance specifications (output current, supply voltage range, operating temperature range).

Substitute parts are grouped into three categories based on their relationship to the main part:

MFR Recommended Substitutes maintain identical electrical specifications and compliance certifications as the original part, differing only in packaging format (tape & reel versus tube) or product status (active versus last time buy).

Direct Manufacturer Substitutes from alternative manufacturers (onsemi) provide functional equivalence with the same logic configuration and package, though with modified electrical operating ranges (2V ~ 6V supply, -40°C ~ 85°C operating temperature) and different moisture sensitivity ratings.

Parametric Equivalents share the same base product number series and electrical specifications but may differ in specific functional characteristics while maintaining compatibility within the 74AC logic family.

Parameter Comparison

Engineering Selection Recommendations

CD74AC245M96 is the primary recommended substitute for the CD74AC245M. Both parts are manufactured by Texas Instruments with identical electrical specifications (1.5V ~ 5.5V supply, -55°C ~ 125°C operating range, MSL 1). The only difference is packaging format: CD74AC245M96 is supplied in tape & reel format while CD74AC245M is supplied in tube format. This part maintains active product status and full compliance with ROHS3 and REACH requirements.

MC74AC245DWR2G, 74AC245SCX, and MC74AC245DWG are onsemi alternatives that provide functional equivalence with identical logic configuration and 20-SOIC package. These parts operate within a narrower supply voltage range (2V ~ 6V) and reduced operating temperature range (-40°C ~ 85°C) compared to the original specification. Additionally, these onsemi parts carry MSL 3 rating (168 hours) versus MSL 1 for the original part. Selection of onsemi alternatives is appropriate when design specifications do not require the extended temperature range or lower voltage operation of the Texas Instruments part.

CD74AC623M is a parametric equivalent from Texas Instruments with identical electrical specifications and MSL rating. This part shares the same supply voltage range (1.5V ~ 5.5V) and operating temperature range (-55°C ~ 125°C) as the original CD74AC245M, maintaining full compatibility for designs requiring extended temperature performance.

Frequently Asked Questions (FAQ)

Q: Can CD74AC245M96 be used as a direct replacement for CD74AC245M?

A: Yes. CD74AC245M96 is electrically and functionally identical to CD74AC245M. Both are Texas Instruments products with the same supply voltage range (1.5V ~ 5.5V), operating temperature range (-55°C ~ 125°C), and MSL rating (1). The difference is packaging format: CD74AC245M is supplied in tube packaging while CD74AC245M96 is supplied in tape & reel format. PCB assembly processes and component handling requirements may differ based on packaging format.

Q: What are the limitations of using onsemi substitutes (MC74AC245DWR2G, 74AC245SCX, MC74AC245DWG)?

A: onsemi alternatives operate within a narrower supply voltage range (2V ~ 6V versus 1.5V ~ 5.5V) and reduced operating temperature range (-40°C ~ 85°C versus -55°C ~ 125°C). These parts also carry MSL 3 rating (168 hours) instead of MSL 1 (unlimited). Use onsemi substitutes only when your design specifications fall within these narrower operating ranges and moisture sensitivity requirements.

Q: Is CD74AC623M a suitable substitute for CD74AC245M?

A: CD74AC623M is a parametric equivalent with identical electrical specifications and operating ranges. However, the base product number differs (74AC623 versus 74AC245), indicating a different functional variant within the 74AC logic family. Verify functional compatibility with your specific application before substitution.

Q: What is the significance of MSL rating differences?

A: MSL 1 (unlimited) indicates the component can be stored indefinitely without moisture absorption concerns. MSL 3 (168 hours) requires the component to be used within 168 hours of package opening or requires baking to remove absorbed moisture. For high-volume production or extended storage, MSL 1 parts (CD74AC245M, CD74AC245M96, CD74AC623M) are preferred.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: Can I mix different substitute parts in the same design?

A: All substitute parts maintain the same 20-SOIC package format and identical logic configuration (1 element, 8 bits, 3-state output, 24mA output current). Mixing parts from different manufacturers or with different operating ranges is permissible provided your circuit design accommodates the narrowest operating specifications among all parts used.