CD74AC373M Equivalent & Substitute Parts

Part Overview

The CD74AC373M is a D-Type Transparent Latch logic integrated circuit manufactured by Texas Instruments, featuring an 8:8 multiplexing configuration with tri-state output capability in a 20-SOIC surface mount package. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design requirements and procurement needs. The part operates across a supply voltage range of 1.5V to 5.5V with a propagation delay of 3ns and supports output currents of 24mA in both high and low states.

Substiute Parts

CD74AC373M

Texas InstrumentsIn Stock: 1944CD74AC373M Datasheet

Current PartRFQ

CD74AC373M96

Texas InstrumentsIn Stock: 1905CD74AC373M96 Datasheet

DirectRFQ

MC74AC373DWG

onsemiIn Stock: 2053MC74AC373DWG Datasheet

MFR RecommendedRFQ

MC74AC373DWR2G

onsemiIn Stock: 1950MC74AC373DWR2G Datasheet

MFR RecommendedRFQ

CD74AC573M

Texas InstrumentsIn Stock: 1643CD74AC573M Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CD74AC373M is determined by strict adherence to the following critical parameters:

Primary Substitution Criteria:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Package/Case: 20-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount

Secondary Compatibility Parameters:

• Voltage Supply Range compatibility
• Propagation Delay specifications
• Output Current ratings
• Operating Temperature range
• RoHS and REACH compliance status

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

Direct Manufacturer Substitutes: Parts with identical base product number (74AC373) from the same manufacturer with different packaging formats.

Manufacturer Recommended Substitutes: Parts from alternative manufacturers (onsemi) with the same base product number and package configuration but different electrical operating ranges.

Parametric Equivalents: Parts with different base product numbers (74AC573) that maintain identical electrical and thermal specifications within the same manufacturer ecosystem.

Parameter Comparison

Engineering Selection Recommendations

CD74AC373M96 (Direct Manufacturer Substitute - Recommended Primary Choice)

CD74AC373M96 is the preferred direct substitute, manufactured by Texas Instruments with identical electrical specifications to the main part. This part maintains the same voltage supply range (1.5V ~ 5.5V), propagation delay (3ns), output current ratings (24mA/24mA), and operating temperature range (-55°C ~ 125°C). The primary difference is packaging format (Cut Tape versus Tube), which does not affect electrical compatibility. CD74AC373M96 carries Active product status, ensuring long-term availability and supply chain stability. Moisture Sensitivity Level remains at 1 (Unlimited), matching the original specification. This part is suitable for direct replacement in all applications where the CD74AC373M was originally specified.

MC74AC373DWG and MC74AC373DWR2G (Manufacturer Recommended Substitutes - Conditional Use)

Both onsemi parts (MC74AC373DWG in Tube packaging and MC74AC373DWR2G in Tape & Reel packaging) provide functional equivalence with identical 8:8 D-Type Transparent Latch configuration and tri-state output. However, these parts operate within a different voltage supply range (2V ~ 6V) and exhibit longer propagation delay (7.5ns) compared to the CD74AC373M specification (1.5V ~ 5.5V, 3ns). Operating temperature range is narrower (-40°C ~ 85°C versus -55°C ~ 125°C). Moisture Sensitivity Level is 3 (168 Hours), requiring controlled storage conditions. These parts are suitable only for applications where the extended voltage range (2V ~ 6V) is acceptable and the reduced temperature operating range does not conflict with system requirements. Both parts maintain Active product status and ROHS3 compliance.

CD74AC573M (Parametric Equivalent - Alternative Configuration)

CD74AC573M represents a parametric equivalent with identical electrical performance to the main part (1.5V ~ 5.5V supply, 3ns propagation delay, 24mA output current, -55°C ~ 125°C operating range). This part differs in base product number (74AC573 versus 74AC373), indicating a different internal circuit configuration despite maintaining the same 8:8 tri-state latch functionality. CD74AC573M carries Last Time Buy status, indicating limited future availability. This part is suitable for applications where the specific circuit topology of the 74AC573 series is compatible with system design requirements. Moisture Sensitivity Level is 1 (Unlimited), matching the original part.

Frequently Asked Questions (FAQ)

Q: Can CD74AC373M96 be used as a direct replacement for CD74AC373M?

A: Yes. CD74AC373M96 is a direct electrical and functional equivalent manufactured by Texas Instruments with identical specifications for voltage supply range (1.5V ~ 5.5V), propagation delay (3ns), output current (24mA/24mA), and operating temperature (-55°C ~ 125°C). The only difference is packaging format (Cut Tape versus Tube), which does not affect circuit performance. Both parts are ROHS3 compliant with MSL 1 rating.

Q: What are the key differences between Texas Instruments and onsemi substitute options?

A: Texas Instruments substitutes (CD74AC373M96 and CD74AC573M) maintain the original voltage supply range of 1.5V ~ 5.5V and propagation delay of 3ns. onsemi substitutes (MC74AC373DWG and MC74AC373DWR2G) operate within 2V ~ 6V with 7.5ns propagation delay and narrower temperature range (-40°C ~ 85°C). onsemi parts also require MSL 3 moisture control (168 hours), whereas Texas Instruments parts have unlimited MSL 1 rating.

Q: Is the CD74AC573M suitable for all applications requiring CD74AC373M?

A: CD74AC573M provides identical electrical performance and thermal specifications but uses a different base product number (74AC573 versus 74AC373), indicating different internal circuit topology. Compatibility depends on whether the specific circuit configuration of the 74AC573 series is compatible with system design. Electrical parameters are equivalent, but circuit-level differences may exist. CD74AC573M carries Last Time Buy status, limiting future procurement availability.

Q: What packaging options are available for substitute parts?

A: CD74AC373M96 is available in Cut Tape (CT) format. MC74AC373DWG is available in Tube packaging. MC74AC373DWR2G is available in Tape & Reel (TR) format. CD74AC573M is available in Tube packaging. Selection depends on production volume requirements and assembly process compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (CD74AC373M96, MC74AC373DWG, MC74AC373DWR2G, and CD74AC573M) are ROHS3 compliant and REACH unaffected, matching the compliance status of the original CD74AC373M.

Q: What is the significance of product status (Obsolete, Active, Last Time Buy)?

A: Product status indicates supply chain availability. CD74AC373M is Obsolete, meaning it is no longer manufactured. CD74AC373M96, MC74AC373DWG, and MC74AC373DWR2G are Active, ensuring continued manufacturing and long-term availability. CD74AC573M is Last Time Buy, indicating limited remaining inventory and no future production. For new designs, Active status parts are preferred.

Q: How does Moisture Sensitivity Level affect part selection?

A: CD74AC373M, CD74AC373M96, and CD74AC573M have MSL 1 (Unlimited), requiring no special moisture control during storage and handling. MC74AC373DWG and MC74AC373DWR2G have MSL 3 (168 Hours), requiring controlled storage conditions and baking procedures before reflow soldering. MSL 3 parts require more stringent handling protocols in manufacturing environments.