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74VHC14MTCX Equivalent & Substitute Parts
Part Overview
The 74VHC14MTCX is a 6-channel inverter IC with Schmitt trigger inputs manufactured by onsemi in 14-TSSOP surface mount packaging. This logic component operates across a 2V to 5.5V supply voltage range and is designed for general-purpose digital signal inversion applications. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating.
Substitute parts are necessary when the original 74VHC14MTCX becomes unavailable due to supply constraints, when alternative packaging formats are required for manufacturing processes, or when extended operating temperature ranges or automotive-grade qualifications are needed for specific applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Logic Type | Inverter |
| Number of Circuits | 6 |
| Number of Inputs | 1 |
| Features | Schmitt Trigger |
| Voltage - Supply | 2V ~ 5.5V |
| Current - Quiescent (Max) | 2 µA |
| Current - Output High, Low | 8mA, 8mA |
| Input Logic Level - Low | 0.9V ~ 1.65V |
| Input Logic Level - High | 2.2V ~ 3.85V |
| Max Propagation Delay @ 5V, 50pF | 10.6ns |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the 74VHC14MTCX is determined by the following core parameters:
Functional Equivalence Requirements:
- Logic Type: Inverter
- Number of Circuits: 6
- Number of Inputs: 1
- Features: Schmitt Trigger
- Voltage - Supply: 2V ~ 5.5V (minimum requirement)
- Current - Output High, Low: 8mA, 8mA
- Package / Case: 14-TSSOP (0.173", 4.40mm Width)
- Mounting Type: Surface Mount
Acceptable Variations:
- Operating Temperature Range: May extend beyond -40°C ~ 85°C (wider ranges are acceptable)
- Current - Quiescent (Max): May be equal to or lower than 2 µA
- Packaging Format: Cut Tape (CT), Tube, or Tape & Reel (TR) are interchangeable for the same part
- Manufacturer: Different manufacturers producing identical logic specifications are acceptable
- Grade/Qualification: Automotive-grade (AEC-Q100) parts are acceptable for non-automotive applications
Substitute parts are grouped into three categories: upgrade variants from the same manufacturer (onsemi), direct equivalents from alternative manufacturers (Texas Instruments, STMicroelectronics, Nexperia), and enhanced versions with extended temperature ranges or automotive qualifications.
Parameter Comparison
| Part Number | Manufacturer | Series | Voltage - Supply | Current - Quiescent (Max) | Operating Temperature | Packaging | Product Status |
|---|---|---|---|---|---|---|---|
| 74VHC14MTCX | onsemi | 74VHC | 2V ~ 5.5V | 2 µA | -40°C ~ 85°C | Cut Tape (CT) & Digi-Reel® | Active |
| MC74VHC14DTG | onsemi | 74VHC | 2V ~ 5.5V | 2 µA | -55°C ~ 125°C | Tube | Active |
| 74VHC14YTTR | STMicroelectronics | 74VHC | 2V ~ 5.5V | 2 µA | -40°C ~ 125°C | Tape & Reel (TR) | Active |
| SN74AHC14PW | Texas Instruments | 74AHC | 2V ~ 5.5V | 1 µA | -40°C ~ 125°C | Tube | Discontinued at DiGi Electronics |
| SN74AHC14PWR | Texas Instruments | 74AHC | 2V ~ 5.5V | 2 µA | -40°C ~ 125°C | Cut Tape (CT) & Digi-Reel® | Active |
| SN74AHC14PWRG3 | Texas Instruments | 74AHC | 2V ~ 5.5V | 2 µA | -40°C ~ 125°C | Tape & Reel (TR) | Active |
| 74AHC14PW,118 | NXP Semiconductors | 74AHC | 2V ~ 5.5V | 2 µA | -40°C ~ 125°C | Not specified | Active |
| 74AHC14PW-Q100,118 | Nexperia USA Inc. | 74AHC | 2V ~ 5.5V | 2 µA | -40°C ~ 125°C | Tape & Reel (TR) | Active |
| 74VHC14PW,118 | Nexperia USA Inc. | 74VHC | 2V ~ 5.5V | 2 µA | -40°C ~ 125°C | Tape & Reel (TR) | Active |
| SN74AHC14MPWREP | Texas Instruments | 74AHC | 2V ~ 5.5V | 2 µA | -55°C ~ 125°C | Tape & Reel (TR) | Active |
| SN74AHC14QPWRG4Q1 | Texas Instruments | 74AHC | 2V ~ 5.5V | 2 µA | -40°C ~ 125°C | Tape & Reel (TR) | Active |
Engineering Selection Recommendations
Primary Recommendation for Direct Replacement: SN74AHC14PWR (Texas Instruments) is the preferred direct substitute. It maintains identical electrical specifications to the 74VHC14MTCX, offers an extended operating temperature range (-40°C ~ 125°C), and is currently in active production status. The Cut Tape & Digi-Reel® packaging matches the original part's format.
Alternative for Extended Temperature Range: MC74VHC14DTG (onsemi) provides the widest operating temperature range (-55°C ~ 125°C) while maintaining the same manufacturer lineage. This variant is suitable for applications requiring enhanced thermal performance.
Automotive-Grade Options: 74AHC14PW-Q100,118 (Nexperia USA Inc.) and SN74AHC14QPWRG4Q1 (Texas Instruments) are AEC-Q100 qualified automotive-grade parts. These are appropriate for automotive applications or systems requiring automotive-level reliability certifications.
Tape & Reel Format Alternatives: 74VHC14YTTR (STMicroelectronics) and 74VHC14PW,118 (Nexperia USA Inc.) are suitable for high-volume manufacturing processes requiring Tape & Reel packaging.
Avoid: SN74AHC14PW (Texas Instruments) is discontinued at DiGi Electronics and should not be selected for new designs despite functional equivalence.
Frequently Asked Questions (FAQ)
Q: Can I use SN74AHC14PWR as a direct replacement for 74VHC14MTCX? A: Yes. SN74AHC14PWR is functionally equivalent with identical logic specifications, supply voltage range, output current ratings, and propagation delay. The extended operating temperature range (-40°C ~ 125°C versus -40°C ~ 85°C) is an improvement for most applications.
Q: What is the difference between 74VHC and 74AHC series parts? A: Both series meet the same functional requirements for this inverter IC. The 74AHC series (Advanced High-speed CMOS) and 74VHC series (Very High-speed CMOS) are compatible logic families with identical electrical performance for this application. Selection between them is based on availability and packaging preferences.
Q: Does packaging format affect electrical performance? A: No. Cut Tape (CT), Tube, and Tape & Reel (TR) packaging formats contain identical die and electrical specifications. Packaging selection is determined by manufacturing process requirements and volume quantities, not electrical performance.
Q: Are automotive-grade parts (AEC-Q100) suitable for non-automotive applications? A: Yes. Automotive-grade parts meet or exceed standard commercial specifications and are fully compatible with non-automotive applications. They may offer additional reliability margin.
Q: What does the operating temperature range extension mean for my application? A: Parts with extended temperature ranges (such as -55°C ~ 125°C) are suitable for applications operating in wider environmental conditions. If your application operates within the original -40°C ~ 85°C range, standard-range parts are sufficient.
Q: Why is SN74AHC14PW listed as discontinued? A: SN74AHC14PW is discontinued at DiGi Electronics but functionally equivalent alternatives remain in active production. Use SN74AHC14PWR or other active-status alternatives for new designs.
Q: Can I mix different manufacturers' parts in the same design? A: Yes. All listed substitute parts are functionally equivalent and meet identical electrical specifications. Mixing manufacturers is acceptable from an electrical standpoint, though design documentation should reflect the specific part used.
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