74ACTQ14MTC Equivalent & Substitute Parts

Part Overview

The 74ACTQ14MTC is a 6-channel inverter IC with Schmitt trigger inputs manufactured by onsemi in a 14-TSSOP surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74ACTQ14MTC operates within a 4.5V to 5.5V supply voltage range and is suitable for logic signal conditioning applications requiring hysteresis input characteristics.

Substiute Parts

74ACTQ14MTC

onsemiIn Stock: 108674ACTQ14MTC Datasheet

Current PartRFQ

MC74ACT14DTR2G

onsemiIn Stock: 50434MC74ACT14DTR2G Datasheet

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74ACT14MTC

onsemiIn Stock: 406274ACT14MTC Datasheet

Parametric EquivalentRFQ

SN74ACT14PW

Texas InstrumentsIn Stock: 1947SN74ACT14PW Datasheet

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SN74ACT14PWR

Texas InstrumentsIn Stock: 5395SN74ACT14PWR Datasheet

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SN74ACT14DBR

Texas InstrumentsIn Stock: 2578SN74ACT14DBR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the 74ACTQ14MTC is determined by the following criteria:

Core Electrical Parameters (Must Match):

• Logic Type: Inverter
• Number of Circuits: 6
• Number of Inputs: 1
• Features: Schmitt Trigger
• Voltage - Supply: 4.5V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C
• Current - Output High, Low: 24mA, 24mA

Mechanical Parameters (Must Match or Be Compatible):

• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP or 14-SSOP (pin-compatible variants)

Performance Parameters (Within Acceptable Range):

• Current - Quiescent (Max): Up to 4 µA
• Max Propagation Delay @ 5V, 50pF: Up to 11.5ns
• Input Logic Level thresholds: Within specified ranges

Substitute parts are grouped by product status and packaging configuration. Parts with active status are preferred for new designs. Packaging differences (Tube, Tape & Reel, Cut Tape) do not affect electrical compatibility but may affect procurement and handling requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: 74ACT14MTC (onsemi)

The 74ACT14MTC is the direct parametric equivalent to the 74ACTQ14MTC. It maintains identical quiescent current (2 µA) and propagation delay (10ns) specifications while offering active product status and ROHS3 compliance. The Tube packaging is suitable for standard component handling. This part provides the closest electrical match with modern compliance certifications.

Secondary Recommendation: SN74ACT14PWR (Texas Instruments)

The SN74ACT14PWR is an active product from Texas Instruments with ROHS3 compliance. It matches the 74ACTQ14MTC in quiescent current and output drive specifications. The propagation delay is slightly higher at 11.5ns, which remains within acceptable performance margins for most logic applications. Cut Tape & Digi-Reel packaging supports automated assembly processes.

Alternative Recommendation: MC74ACT14DTR2G (onsemi)

The MC74ACT14DTR2G is an active onsemi product with ROHS3 compliance and Tape & Reel packaging optimized for high-volume production. Quiescent current is specified at 4 µA (higher than the original 2 µA) and propagation delay is 11.5ns. This part is suitable when procurement volume justifies Tape & Reel handling and the slightly higher quiescent current is acceptable for the application.

Package Consideration: SN74ACT14DBR (Texas Instruments)

The SN74ACT14DBR uses a 14-SSOP package (0.209", 5.30mm width) instead of the 14-TSSOP package. While electrically equivalent, the larger package footprint requires PCB layout modification. This part is recommended only when 14-SSOP package compatibility is required or when 14-TSSOP alternatives are unavailable.

Not Recommended: SN74ACT14PW (Texas Instruments)

The SN74ACT14PW is discontinued at DiGi Electronics and should not be selected for new designs despite meeting electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 74ACTQ14MTC with 74ACT14MTC?

A: Yes. The 74ACT14MTC is a parametric equivalent with identical electrical specifications (2 µA quiescent current, 10ns propagation delay) and the same 14-TSSOP package footprint. The primary difference is product status (Active vs. Obsolete) and compliance certifications (ROHS3 Compliant).

Q: What is the difference between 14-TSSOP and 14-SSOP packages?

A: Both are surface mount packages with 14 pins, but differ in width. The 14-TSSOP is 0.173" (4.40mm) wide, while the 14-SSOP is 0.209" (5.30mm) wide. They are not pin-compatible without PCB layout modification. The SN74ACT14DBR uses the larger 14-SSOP package.

Q: Why does MC74ACT14DTR2G have higher quiescent current (4 µA vs. 2 µA)?

A: Quiescent current variation within the 74ACT14 family reflects manufacturing process differences between onsemi product lines. The 4 µA specification remains within acceptable limits for most logic applications and does not affect functional compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: All active substitute parts listed (74ACT14MTC, MC74ACT14DTR2G, SN74ACT14PW, SN74ACT14PWR, SN74ACT14DBR) are ROHS3 compliant. The original 74ACTQ14MTC does not specify RoHS status due to its obsolete classification.

Q: What packaging options are available for active products?

A: Active substitutes are available in three packaging configurations: Tube (74ACT14MTC), Tape & Reel (MC74ACT14DTR2G, SN74ACT14DBR), and Cut Tape & Digi-Reel (SN74ACT14PWR). Selection depends on procurement volume and assembly process requirements.

Q: Can I use SN74ACT14PWR in high-volume production?

A: Yes. The SN74ACT14PWR is an active product with Cut Tape & Digi-Reel packaging suitable for automated assembly. It meets all electrical specifications and carries ROHS3 compliance certification.

Q: What is the maximum propagation delay difference among substitutes?

A: The 74ACTQ14MTC and 74ACT14MTC specify 10ns propagation delay at 5V with 50pF load. Other substitutes specify 11.5ns. This 1.5ns difference is within typical logic circuit timing margins and does not affect functional compatibility in standard applications.