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M74VHC1GT126DF2G Equivalent & Substitute Parts
Part Overview
The M74VHC1GT126DF2G is a non-inverting buffer logic IC manufactured by onsemi, featuring 1 element with 1 bit per element and 3-state output capability. Housed in a 5-TSSOP (SC-70-5/SOT-353) package, this component operates across a 3V to 5.5V supply range with 8mA output current capability. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 1 |
| Output Type | 3-State |
| Current - Output High, Low | 8mA, 8mA |
| Voltage - Supply | 3V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Package / Case | 5-TSSOP, SC-70-5, SOT-353 |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the M74VHC1GT126DF2G is determined by strict equivalence across the following critical parameters: logic type (buffer, non-inverting), element and bit configuration (1 element, 1 bit per element), output type (3-state), output current capability (8mA minimum for both high and low), supply voltage range (minimum 3V to 5.5V), package type (5-TSSOP/SC-70-5/SOT-353), and surface mount capability. Parts are grouped into three categories based on substitution relationship: parametric equivalents (identical electrical and mechanical specifications), direct equivalents (active production status with matching parameters), and similar alternatives (compatible but with minor parameter variations or different package options).
Parameter Comparison
| Part Number | Manufacturer | Logic Type | Output Type | Current (mA) | Voltage Supply | Temp Range | Package | Status | Grade |
|---|---|---|---|---|---|---|---|---|---|
| M74VHC1GT126DF2G | onsemi | Buffer, Non-Inverting | 3-State | 8, 8 | 3V ~ 5.5V | -55°C ~ 125°C | 5-TSSOP | Obsolete | Standard |
| NLV18VHC1GT125DFT2G | onsemi | Buffer, Non-Inverting | 3-State | 8, 8 | 3V ~ 5.5V | -55°C ~ 125°C | 5-TSSOP | Active | Automotive |
| NLVVHC1GT125DF1G | onsemi | Buffer, Non-Inverting | 3-State | 8, 8 | 3V ~ 5.5V | -55°C ~ 125°C | 5-TSSOP | Obsolete | Automotive |
| NLVVHC1GT125DF2G | onsemi | Buffer, Non-Inverting | 3-State | 8, 8 | 3V ~ 5.5V | -55°C ~ 125°C | 5-TSSOP | Obsolete | Automotive |
| NLVVHC1GT126DF1G | onsemi | Buffer, Non-Inverting | 3-State | 8, 8 | 3V ~ 5.5V | -55°C ~ 125°C | 5-TSSOP | Obsolete | Automotive |
| 74AHCT1G126GW-Q10H | Nexperia USA Inc. | Buffer, Non-Inverting | 3-State | 8, 8 | 4.5V ~ 5.5V | -40°C ~ 125°C | 5-TSSOP | Active | Automotive |
| 74HCT1G126GW,125 | Nexperia USA Inc. | Buffer, Non-Inverting | 3-State | 6, 6 | 4.5V ~ 5.5V | -40°C ~ 125°C | 5-TSSOP | Active | Standard |
| SN74LV1T126DCKR | Texas Instruments | Buffer, Non-Inverting | 3-State | 8, 8 | 1.6V ~ 5.5V | -40°C ~ 125°C | 5-TSSOP | Active | Standard |
| 74AHC1G126GV,125 | Nexperia USA Inc. | Buffer, Non-Inverting | 3-State | 8, 8 | 2V ~ 5.5V | -40°C ~ 125°C | SC-74A | Active | Standard |
| 74AHC1G126GW,125 | Nexperia USA Inc. | Buffer, Non-Inverting | 3-State | 8, 8 | 2V ~ 5.5V | -40°C ~ 125°C | 5-TSSOP | Active | Standard |
| 74AHC1G126MDCKTEP | Texas Instruments | Buffer, Non-Inverting | 3-State | 8, 8 | 2V ~ 5.5V | -55°C ~ 125°C | 5-TSSOP | Last Time Buy | Standard |
Engineering Selection Recommendations
For applications requiring direct pin-compatible replacement with identical electrical performance, NLV18VHC1GT125DFT2G is the primary choice, offering active production status with automotive-grade qualification (AEC-Q100) and matching 3V to 5.5V supply range. NLVVHC1GT125DF2G and NLVVHC1GT126DF1G provide parametric equivalence with automotive qualification but are obsolete.
For active production alternatives, 74AHCT1G126GW-Q10H (Nexperia) maintains 8mA output current and automotive qualification but operates within a narrower 4.5V to 5.5V supply range. 74AHC1G126GW,125 (Nexperia) and 74AHC1G126MDCKTEP (Texas Instruments) are active alternatives with 8mA output capability and 5-TSSOP packaging, though with reduced minimum supply voltage (2V) and different temperature operating ranges.
SN74LV1T126DCKR (Texas Instruments) offers the widest supply voltage range (1.6V to 5.5V) with 8mA output current and active production status, suitable for low-voltage applications. 74HCT1G126GW,125 (Nexperia) is an active alternative but provides reduced output current (6mA) and narrower supply range (4.5V to 5.5V).
74AHC1G126GV,125 (Nexperia) uses SC-74A packaging instead of 5-TSSOP, requiring PCB layout modification but offering active production status with 8mA output capability.
Frequently Asked Questions (FAQ)
Q: Can NLV18VHC1GT125DFT2G directly replace M74VHC1GT126DF2G?
A: Yes. Both parts share identical electrical specifications (8mA output current, 3V to 5.5V supply, -55°C to 125°C operating range) and 5-TSSOP packaging. NLV18VHC1GT125DFT2G is active production with automotive qualification, making it the preferred direct replacement.
Q: What is the difference between parametric equivalents and direct equivalents?
A: Parametric equivalents match all electrical and mechanical specifications but may have different product status (obsolete vs. active). Direct equivalents are active production parts with matching parameters. Similar alternatives have compatible functionality but with parameter variations such as supply voltage range or output current.
Q: Why do some substitutes have different supply voltage ranges?
A: Different logic families operate at different voltage levels. The original M74VHC1GT126DF2G operates from 3V to 5.5V. Alternatives like 74AHC1G126GW,125 (2V to 5.5V) and SN74LV1T126DCKR (1.6V to 5.5V) extend the lower voltage limit, while 74AHCT1G126GW-Q10H restricts to 4.5V to 5.5V. Verify your application's supply voltage requirements before selection.
Q: Are all substitutes available in the same package?
A: Most substitutes use 5-TSSOP (SC-70-5/SOT-353) packaging matching the original. Exception: 74AHC1G126GV,125 uses SC-74A packaging, requiring PCB layout modification. Confirm package compatibility with your board design.
Q: What does AEC-Q100 qualification mean?
A: AEC-Q100 is an automotive-grade qualification standard. Parts with this certification (NLV18VHC1GT125DFT2G, NLVVHC1GT125DF1G, NLVVHC1GT125DF2G, NLVVHC1GT126DF1G, 74AHCT1G126GW-Q10H) meet automotive reliability and quality requirements. Use these for automotive applications.
Q: Can I use 74HCT1G126GW,125 as a substitute if output current is reduced to 6mA?
A: Only if your circuit design tolerates 6mA output current instead of the original 8mA. Verify that downstream logic inputs do not require the full 8mA drive capability. This part is active production with 4.5V to 5.5V supply range.
Q: Which substitute offers the widest operating temperature range?
A: M74VHC1GT126DF2G and 74AHC1G126MDCKTEP both support -55°C to 125°C. Most other substitutes operate from -40°C to 125°C. Select based on your thermal environment requirements.
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