74ACTQ373SJ D-Type Transparent Latch Equivalent & Substitute Parts

Part Overview

The 74ACTQ373SJ is a D-Type Transparent Latch IC manufactured by onsemi, featuring 1 channel with 8:8 configuration and tri-state output capability. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates within a 4.5V to 5.5V supply voltage range and is housed in a 20-SOP surface mount package.

Substiute Parts

74ACTQ373SJ

onsemiIn Stock: 113974ACTQ373SJ Datasheet

Current PartRFQ

CD74ACT373M96

Texas InstrumentsIn Stock: 3009CD74ACT373M96 Datasheet

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SN74ACT373DW

Texas InstrumentsIn Stock: 1749SN74ACT373DW Datasheet

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SN74ACT373DWR

Texas InstrumentsIn Stock: 5468SN74ACT373DWR Datasheet

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SN74ACT373MDWREP

Texas InstrumentsIn Stock: 793SN74ACT373MDWREP Datasheet

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SN74ACT373NSR

Texas InstrumentsIn Stock: 2171SN74ACT373NSR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74ACTQ373SJ is determined by the following critical parameters:

• Logic Function: D-Type Transparent Latch with 8:8 configuration and tri-state output
• Supply Voltage: 4.5V ~ 5.5V compatibility
• Output Characteristics: 24mA output current capability (both high and low)
• Independent Circuits: Single channel requirement
• Mounting Type: Surface mount technology
• Package Compatibility: Physical dimensions and pin configuration

Substitute parts must maintain functional equivalence across these parameters. Package variations (20-SOIC vs. 20-SOP) are acceptable when pin configuration and electrical characteristics remain compatible. Propagation delay variations within the specified operating range do not preclude substitution, provided all other electrical parameters align.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Product Status)

SN74ACT373DWR and SN74ACT373MDWREP are the preferred substitutes, both manufactured by Texas Instruments with active product status. SN74ACT373DWR is available in Cut Tape and Digi-Reel packaging with 5390 units in stock. SN74ACT373MDWREP is supplied in Tape & Reel format with 781 units available. Both parts maintain full electrical compatibility with the 74ACTQ373SJ across all critical parameters.

Extended Temperature Range Option

CD74ACT373M96 and SN74ACT373MDWREP both support an extended operating temperature range of -55°C to 125°C, compared to the standard -40°C to 85°C range. These options are suitable for applications requiring broader thermal performance. CD74ACT373M96 offers the fastest propagation delay at 3ns and is available in Tape & Reel packaging with 2904 units in stock.

Package Consideration

SN74ACT373NSR maintains the original 20-SOIC package width of 0.209" (5.30mm), matching the 74ACTQ373SJ footprint precisely. This part is available in Tape & Reel packaging with 2100 units in stock and is recommended when PCB layout constraints require exact package compatibility.

Compliance Status

All Texas Instruments substitute parts are ROHS3 compliant and carry REACH Unaffected status, meeting current regulatory requirements. All parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Frequently Asked Questions (FAQ)

Q: Can SN74ACT373DWR be used as a direct replacement for 74ACTQ373SJ?

A: Yes. SN74ACT373DWR maintains functional equivalence across all critical electrical parameters: D-Type Transparent Latch configuration, 8:8 circuit, tri-state output, 4.5V-5.5V supply voltage, 24mA output current, and surface mount technology. The package width differs (0.295" vs. 0.209"), but pin configuration and electrical characteristics are compatible.

Q: What is the difference between the 20-SOIC and 20-SOP packages?

A: Both are surface mount packages with identical pin counts and configurations. The primary difference is package width: 20-SOIC measures 0.295" (7.50mm) while 20-SOP measures 0.209" (5.30mm). SN74ACT373NSR provides the narrower 20-SOIC package matching the original 74ACTQ373SJ footprint.

Q: Does propagation delay variation affect substitution compatibility?

A: Propagation delay differences (ranging from 3ns to 8.5ns across the substitute options) do not preclude substitution, provided the application timing requirements are met. CD74ACT373M96 offers the fastest response at 3ns, while other options provide 8.5ns performance. Verify application-specific timing constraints before selection.

Q: Are all substitute parts RoHS compliant?

A: All Texas Instruments substitute parts listed are ROHS3 compliant. The original 74ACTQ373SJ RoHS status was not specified in the provided data.

Q: Which substitute offers the widest operating temperature range?

A: CD74ACT373M96 and SN74ACT373MDWREP both support -55°C to 125°C operation, compared to the standard -40°C to 85°C range. These options are suitable for extended temperature applications.

Q: What is the current inventory status of substitute parts?

A: SN74ACT373DWR has the highest inventory at 5390 units. CD74ACT373M96 has 2904 units, SN74ACT373NSR has 2100 units, SN74ACT373MDWREP has 781 units, and SN74ACT373DW has 1695 units available.