74FCT2373CTQG Equivalent & Substitute Parts

Part Overview

The 74FCT2373CTQG is a D-Type Transparent Latch logic IC manufactured by Renesas Electronics Corporation, featuring an 8:8 circuit configuration with tri-state output capability in a 20-QSOP surface mount package. This component is classified as Last Time Buy, indicating discontinued production status. Alternative equivalent parts are necessary to ensure continued design support and procurement availability for new production runs and system maintenance.

Substiute Parts

74FCT2373CTQG

Renesas Electronics CorporationIn Stock: 81274FCT2373CTQG Datasheet

Current PartRFQ

74FCT2373ATQG

IDT, Integrated Device Technology IncIn Stock: 1917274FCT2373ATQG Datasheet

Parametric EquivalentRFQ

CY74FCT373ATQCT

Texas InstrumentsIn Stock: 5232CY74FCT373ATQCT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74FCT2373CTQG is determined by strict equivalence across the following critical parameters:

• Logic Type: D-Type Transparent Latch
• Circuit Configuration: 8:8
• Output Type: Tri-State
• Supply Voltage Range: 4.75V ~ 5.25V
• Operating Temperature Range: -40°C ~ 85°C
• Package Type: 20-QSOP or 20-SSOP (mechanically compatible)
• Propagation Delay: 2ns
• Independent Circuits: 1

Substitute parts must maintain identical functional specifications and pin compatibility. Variations in output current ratings and packaging format (Tube vs. Bulk vs. Cut Tape) do not affect electrical substitutability but may impact procurement and handling requirements.

Parameter Comparison

Engineering Selection Recommendations

The 74FCT2373ATQG (IDT) provides parametric equivalence with identical electrical specifications and output current ratings. This part maintains Active product status and is suitable for direct replacement in applications requiring exact performance matching.

The CY74FCT373ATQCT (Texas Instruments) is a manufacturer-recommended alternative with enhanced output current capability (32mA/64mA versus 15mA/12mA). This part is Active and ROHS3 compliant. The increased output current provides additional drive capability for applications with higher fan-out requirements. Package compatibility is maintained through the mechanically equivalent 20-SSOP format.

Both substitute parts comply with REACH regulations and carry EAR99 export classification, matching the original component's regulatory status.

Frequently Asked Questions (FAQ)

Q: Can the 74FCT2373ATQG directly replace the 74FCT2373CTQG?

A: Yes. The 74FCT2373ATQG is a parametric equivalent with identical logic type, circuit configuration, output type, supply voltage, propagation delay, and output current specifications. Pin configuration and package dimensions are compatible.

Q: What is the difference between the 20-QSOP and 20-SSOP packages?

A: Both packages are mechanically equivalent with identical pin pitch and footprint dimensions (0.154", 3.90mm width). The designations reflect different supplier packaging standards but are interchangeable for PCB assembly purposes.

Q: Why does the CY74FCT373ATQCT have higher output current ratings?

A: The Texas Instruments part features enhanced output drive capability (32mA/64mA) compared to the original specification (15mA/12mA). This provides greater fan-out capacity while maintaining all other electrical parameters. Applications requiring standard output current can use this part without modification.

Q: Are there any compliance differences between the substitute parts?

A: The 74FCT2373ATQG compliance status is not fully specified in available documentation. The CY74FCT373ATQCT is ROHS3 compliant with MSL rating of 2 (1 Year), compared to the original part's MSL rating of 1 (Unlimited). Both parts are REACH Unaffected and carry EAR99 classification.

Q: Which substitute part should be selected for new designs?

A: Selection depends on application requirements. For exact electrical matching, use the 74FCT2373ATQG. For applications benefiting from increased output current capability, use the CY74FCT373ATQCT. Both parts are Active and suitable for production use.