74VHCT373AMTC Equivalent & Substitute Parts

Part Overview

The 74VHCT373AMTC is a D-Type Transparent Latch logic IC manufactured by onsemi, featuring 1 channel with 8:8 circuit configuration and tri-state output capability. This component operates within the 4.5V to 5.5V supply voltage range and is housed in a 20-TSSOP package. The part is currently listed as obsolete, making identification of equivalent and substitute components essential for ongoing system support and new design implementations.

Substiute Parts

74VHCT373AMTC

onsemiIn Stock: 84274VHCT373AMTC Datasheet

Current PartRFQ

74VHCT573AMTC

Fairchild SemiconductorIn Stock: 552374VHCT573AMTC Datasheet

Parametric EquivalentRFQ

MC74VHCT573ADTG

onsemiIn Stock: 1206MC74VHCT573ADTG Datasheet

Parametric EquivalentRFQ

SN74AHCT373PW

Texas InstrumentsIn Stock: 1761SN74AHCT373PW Datasheet

DirectRFQ

SN74AHCT373PWR

Texas InstrumentsIn Stock: 3641SN74AHCT373PWR Datasheet

DirectRFQ

SN74LV373ATPW

Texas InstrumentsIn Stock: 858SN74LV373ATPW Datasheet

DirectRFQ

SN74AHCT373DBR

Texas InstrumentsIn Stock: 2137SN74AHCT373DBR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74VHCT373AMTC is determined by the following critical parameters:

• Logic Type & Circuit Configuration: All substitutes must be D-Type Transparent Latch devices with 8:8 circuit configuration
• Output Type: Tri-state output capability is required
• Supply Voltage Range: 4.5V ~ 5.5V compatibility is mandatory
• Operating Temperature Range: -40°C ~ 85°C minimum requirement
• Package Compatibility: Primary substitutes use 20-TSSOP packaging; 20-SSOP variants are mechanically similar but represent package variations
• Independent Circuits: Single channel configuration (1 circuit) is required

Substitute parts are categorized as follows:

Parametric Equivalents (identical electrical and mechanical specifications):

• 74VHCT573AMTC (Fairchild Semiconductor)
• MC74VHCT573ADTG (onsemi)

Direct Substitutes (same logic type and package, active product status):

• SN74AHCT373PW (Texas Instruments)
• SN74AHCT373PWR (Texas Instruments)

Compatible Alternatives (same logic type, different output current specifications):

• SN74LV373ATPW (Texas Instruments) — higher output current (16mA vs 8mA)

Package Variant (same logic type, different package):

• SN74AHCT373DBR (Texas Instruments) — 20-SSOP package instead of 20-TSSOP

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74AHCT373PWR (Texas Instruments)

This part meets all functional requirements with active product status and RoHS3 compliance. The improved propagation delay (1ns vs 5.1ns) provides performance enhancement without compromising compatibility. Tape & Reel packaging supports production volume requirements.

Secondary Recommendation: MC74VHCT573ADTG (onsemi)

This parametric equivalent maintains identical electrical specifications and propagation delay characteristics. Active product status and RoHS3 compliance ensure long-term availability. Tube packaging is suitable for lower-volume applications.

Alternative for Identical Specifications: 74VHCT573AMTC (Fairchild Semiconductor)

Provides exact parameter matching with the original part. Active product status supports ongoing procurement. Bulk packaging requires evaluation against assembly requirements.

Package Variant Consideration: SN74AHCT373DBR (Texas Instruments)

Suitable only if 20-SSOP package (0.209", 5.30mm width) is compatible with existing PCB layouts. Wider package pitch may require design verification.

Higher Current Output Option: SN74LV373ATPW (Texas Instruments)

Applicable only if increased output current capability (16mA vs 8mA) is required. Discontinued status limits long-term availability.

Frequently Asked Questions (FAQ)

Q: Can SN74AHCT373PWR directly replace 74VHCT373AMTC without circuit modifications?

A: Yes. Both devices share identical logic type, circuit configuration, output type, supply voltage range, and operating temperature specifications. The faster propagation delay (1ns vs 5.1ns) is a performance improvement that does not affect functional compatibility.

Q: What is the difference between 74VHCT573AMTC and 74VHCT373AMTC?

A: These are distinct base product numbers within the same 74VHCT series. The 74VHCT573AMTC is listed as a parametric equivalent substitute, indicating identical electrical and mechanical specifications for the application.

Q: Is SN74AHCT373DBR compatible with the original 20-TSSOP footprint?

A: No. The SN74AHCT373DBR uses a 20-SSOP package (0.209", 5.30mm width) compared to the original 20-TSSOP package (0.173", 4.40mm width). PCB layout and footprint modifications are required for this substitution.

Q: Why does SN74LV373ATPW have higher output current specifications?

A: The 74LV series operates at lower voltage levels with different output stage design, resulting in 16mA output current capability versus 8mA in the 74VHCT and 74AHCT series. This part is suitable only if increased drive capability is required.

Q: Are all substitute parts RoHS3 compliant?

A: MC74VHCT573ADTG and all Texas Instruments parts (SN74AHCT373PW, SN74AHCT373PWR, SN74LV373ATPW, SN74AHCT373DBR) are confirmed RoHS3 compliant. Fairchild Semiconductor 74VHCT573AMTC compliance status is not specified in the provided data.

Q: Which substitute offers the best long-term availability?

A: SN74AHCT373PWR (Texas Instruments) and MC74VHCT573ADTG (onsemi) both have active product status. SN74AHCT373PWR offers additional advantages through established Texas Instruments distribution channels and higher current inventory levels.