74ACTQ652SCX Equivalent & Substitute Parts

Part Overview

The 74ACTQ652SCX is a non-inverting transceiver logic integrated circuit manufactured by onsemi, designed for 8-bit bidirectional data transmission with 3-state output capability. Operating within a 4.5V to 5.5V supply voltage range, this component is housed in a 24-SOP package and rated for -40°C to 85°C operating temperature. The product is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations.

Substiute Parts

74ACTQ652SCX

onsemiIn Stock: 584174ACTQ652SCX Datasheet

Current PartRFQ

MC74ACT646DWR2G

onsemiIn Stock: 972MC74ACT646DWR2G Datasheet

Parametric EquivalentRFQ

MC74ACT652DWR2G

onsemiIn Stock: 1070MC74ACT652DWR2G Datasheet

Parametric EquivalentRFQ

CD74ACT652M96

Texas InstrumentsIn Stock: 1053CD74ACT652M96 Datasheet

SimilarRFQ

74ACT11245DWR

Texas InstrumentsIn Stock: 89774ACT11245DWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74ACTQ652SCX is determined by the following critical parameters: logic type (non-inverting transceiver), number of elements (1), bits per element (8), output type (3-state), output current capability (24mA high and low), supply voltage range (4.5V ~ 5.5V), operating temperature range, mounting type (surface mount), and package form factor (24-SOIC).

Substitute parts are grouped into two categories:

Parametric Equivalents: Parts that match all critical electrical and mechanical parameters, including supply voltage, output current, operating temperature, and package dimensions. These parts are direct functional replacements.

Similar Parts: Parts that match core functional parameters and package form factor but may differ in operating temperature range or product status. These parts provide functional compatibility with potential environmental or lifecycle considerations.

Parameter Comparison

Engineering Selection Recommendations

For Direct Parametric Replacement:

MC74ACT652DWR2G and MC74ACT646DWR2G (onsemi) are parametric equivalents matching the 74ACTQ652SCX across all critical electrical parameters and operating temperature range. Both are ROHS3 compliant. Selection between these two depends on specific application requirements, as both maintain identical electrical characteristics and package form factor.

For Extended Temperature Range Applications:

CD74ACT652M96 (Texas Instruments) provides an extended operating temperature range of -55°C to 125°C while maintaining all core electrical parameters. This part is active in production status and ROHS3 compliant, making it suitable for applications requiring broader environmental specifications.

For Active Production Status:

74ACT11245DWR (Texas Instruments) is an active product offering long-term availability assurance. It matches all critical electrical parameters and operating temperature specifications of the original part, with ROHS3 compliance and unlimited moisture sensitivity level.

Frequently Asked Questions (FAQ)

Q: Can MC74ACT652DWR2G directly replace 74ACTQ652SCX in existing designs?

A: Yes. MC74ACT652DWR2G matches all critical electrical parameters including supply voltage (4.5V ~ 5.5V), output current (24mA), operating temperature (-40°C ~ 85°C), and 24-SOIC package form factor. The primary difference is moisture sensitivity level (MSL 3 versus MSL 1), which may require adjusted handling procedures during assembly.

Q: What is the difference between MC74ACT646DWR2G and MC74ACT652DWR2G?

A: Both parts are parametric equivalents of the 74ACTQ652SCX with identical electrical specifications and operating parameters. The difference lies in the base product number (74ACT646 versus 74ACT652), which reflects different internal logic configurations. Selection should be based on specific application requirements and circuit design compatibility.

Q: Why is CD74ACT652M96 listed as a similar part rather than a parametric equivalent?

A: CD74ACT652M96 differs in operating temperature range (-55°C ~ 125°C versus -40°C ~ 85°C) and product status (active versus obsolete). While it maintains all core electrical parameters and package specifications, the extended temperature range represents a different performance envelope. This part is suitable for applications requiring broader environmental specifications.

Q: Are all substitute parts ROHS3 compliant?

A: MC74ACT652DWR2G, MC74ACT646DWR2G, CD74ACT652M96, and 74ACT11245DWR are all ROHS3 compliant. The original 74ACTQ652SCX does not specify RoHS status in the provided data.

Q: What is the significance of moisture sensitivity level (MSL) differences?

A: MSL rating determines maximum storage time at specified humidity levels before component use. The 74ACTQ652SCX and active alternatives (CD74ACT652M96, 74ACT11245DWR) have MSL 1 (unlimited storage). MC74ACT652DWR2G and MC74ACT646DWR2G have MSL 3 (168 hours maximum), requiring controlled storage conditions and potentially affecting procurement and assembly timelines.

Q: Can these parts be used interchangeably in high-temperature applications?

A: For applications exceeding -40°C to 85°C range, CD74ACT652M96 with -55°C to 125°C rating is the appropriate selection. Other listed substitutes maintain the original -40°C to 85°C specification and are not suitable for extended temperature environments.