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SN74AHC1G08DBVT Equivalent & Substitute Parts
Part Overview
The SN74AHC1G08DBVT is a single-channel AND gate logic IC manufactured by Texas Instruments in SOT-23-5 surface mount packaging. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The device operates across a 2V to 5.5V supply range with low quiescent current and fast propagation delay characteristics suitable for general-purpose logic applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Logic Type | AND Gate |
| Number of Circuits | 1 |
| Number of Inputs | 2 |
| Voltage - Supply | 2V ~ 5.5V |
| Current - Quiescent (Max) | 1 µA |
| Current - Output High, Low | 8mA, 8mA |
| Input Logic Level - Low | 0.5V ~ 1.65V |
| Input Logic Level - High | 1.5V ~ 3.85V |
| Max Propagation Delay @ 5V, 50pF | 7.9ns |
| Operating Temperature | -55°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | SC-74A, SOT-753 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the SN74AHC1G08DBVT is determined by the following critical parameters:
- Logic function: Single-channel AND gate with 2 inputs
- Supply voltage range: 2V ~ 5.5V minimum requirement
- Output drive capability: 8mA minimum for both high and low states
- Propagation delay: 7.9ns maximum at 5V, 50pF load
- Input logic thresholds: Low 0.5V ~ 1.65V, High 1.5V ~ 3.85V
- Operating temperature: -55°C ~ 125°C
- Surface mount packaging with SOT-23-5 or equivalent footprint compatibility
- RoHS3 compliance and MSL Level 1
Substitute parts are grouped into three categories: manufacturer-recommended direct replacements (same part number variants), parametric equivalents (identical electrical specifications with different packaging or product status), and direct alternatives from other manufacturers meeting all electrical and mechanical requirements.
Parameter Comparison
| Part Number | Manufacturer | Series | Status | Supply Voltage | Quiescent Current | Output Drive (mA) | Propagation Delay (ns) | Temp Range | Package |
|---|---|---|---|---|---|---|---|---|---|
| SN74AHC1G08DBVT | Texas Instruments | 74AHC | Obsolete | 2V ~ 5.5V | 1 µA | 8, 8 | 7.9 @ 5V | -55°C ~ 125°C | SOT-23-5 |
| SN74AHC1G08DBVR | Texas Instruments | 74AHC | Active | 2V ~ 5.5V | 1 µA | 8, 8 | 7.9 @ 5V | -55°C ~ 125°C | SOT-23-5 |
| SN74AHC1G08DBV3 | Texas Instruments | 74AHC | Active | 2V ~ 5.5V | 1 µA | 8, 8 | 7.9 @ 5V | -55°C ~ 125°C | SOT-23-5 |
| MC74VHC1G08DTT1G | onsemi | 74VHC | Obsolete | 2V ~ 5.5V | 1 µA | 8, 8 | 7.9 @ 5V | -55°C ~ 125°C | 5-TSOP |
| 74AHC1G08GV,125 | Nexperia USA Inc. | 74AHC | Active | 2V ~ 5.5V | 1 µA | 8, 8 | 7.9 @ 5V | -40°C ~ 125°C | SC-74A |
| 74AHC1G08GV-Q100,1 | Nexperia USA Inc. | 74AHC | Active | 2V ~ 5.5V | 1 µA | 8, 8 | 7.9 @ 5V | -40°C ~ 125°C | SC-74A |
| 74AHC1G08GW,125 | Nexperia USA Inc. | 74AHC | Active | 2V ~ 5.5V | 1 µA | 8, 8 | 7.9 @ 5V | -40°C ~ 125°C | 5-TSSOP |
| 74AHC1G08W5-7 | Diodes Incorporated | 74AHC | Active | 2V ~ 5.5V | 1 µA | 8, 8 | 7.9 @ 5V | -40°C ~ 125°C | SOT-25 |
| 74HC1G08GV,125 | Nexperia USA Inc. | 74HC | Active | 2V ~ 6V | 20 µA | 2.6, 2.6 | 23 @ 6V | -40°C ~ 125°C | SC-74A |
| M74VHC1GT08DTT1G | onsemi | 74VHC | Obsolete | 3V ~ 5.5V | 1 µA | 8, 8 | 7.9 @ 5V | -55°C ~ 125°C | 5-TSOP |
| MC74HC1G08DTT1G | onsemi | 74HC | Obsolete | 2V ~ 6V | 1 µA | 2.6, 2.6 | 17 @ 6V | -55°C ~ 125°C | 5-TSOP |
Engineering Selection Recommendations
For direct replacement of the obsolete SN74AHC1G08DBVT, select SN74AHC1G08DBVR or SN74AHC1G08DBV3 from Texas Instruments. Both parts maintain identical electrical specifications and SOT-23-5 packaging while offering active product status with established supply chains.
For applications requiring alternative packaging, the Nexperia 74AHC1G08GV,125 and 74AHC1G08GV-Q100,1 provide equivalent performance in SC-74A packaging. The automotive-qualified variant 74AHC1G08GV-Q100,1 includes AEC-Q100 certification for automotive applications. The 74AHC1G08GW,125 variant offers 5-TSSOP packaging for space-constrained designs.
The Diodes Incorporated 74AHC1G08W5-7 provides SOT-25 packaging with active status and high inventory availability, suitable for applications where package footprint flexibility is acceptable.
Parts from onsemi (MC74VHC1G08DTT1G and M74VHC1GT08DTT1G) offer equivalent electrical performance but are classified as obsolete. The M74VHC1GT08DTT1G has a minimum supply voltage of 3V, restricting use in 2V applications.
The 74HC1G08GV,125 from Nexperia operates at higher quiescent current (20 µA vs. 1 µA) and reduced output drive (2.6mA vs. 8mA), making it suitable only for applications where these parameter differences are acceptable.
All recommended substitutes maintain ROHS3 compliance and MSL Level 1 rating consistent with the original part.
Frequently Asked Questions (FAQ)
Q: Can SN74AHC1G08DBVR directly replace SN74AHC1G08DBVT?
A: Yes. Both parts are Texas Instruments 74AHC series single-channel AND gates with identical electrical specifications, supply voltage range (2V ~ 5.5V), output drive capability (8mA), propagation delay (7.9ns @ 5V, 50pF), and SOT-23-5 packaging. The primary difference is product status: DBVR is active while DBVT is obsolete.
Q: What is the difference between SC-74A and SOT-23-5 packaging?
A: SC-74A and SOT-23-5 are equivalent designations for the same 5-pin surface mount package. Both refer to a small outline transistor package with identical pin configuration and footprint. Parts specified with either designation are mechanically and electrically interchangeable.
Q: Can I use 74HC1G08GV,125 as a substitute?
A: The 74HC1G08GV,125 meets the AND gate logic function and basic supply voltage range (2V ~ 6V). However, it differs in quiescent current (20 µA vs. 1 µA) and output drive capability (2.6mA vs. 8mA). Use this part only if your application tolerates higher power consumption and reduced output drive.
Q: Are the onsemi parts (MC74VHC1G08DTT1G and M74VHC1GT08DTT1G) suitable replacements?
A: Both onsemi parts provide equivalent propagation delay and output drive. However, both are classified as obsolete. Additionally, M74VHC1GT08DTT1G has a minimum supply voltage of 3V, making it unsuitable for 2V applications. MC74VHC1G08DTT1G supports the full 2V ~ 5.5V range.
Q: What packaging options are available for active parts?
A: Active substitutes are available in SOT-23-5 (SN74AHC1G08DBVR, SN74AHC1G08DBV3), SC-74A (74AHC1G08GV,125, 74AHC1G08GV-Q100,1), 5-TSSOP (74AHC1G08GW,125), and SOT-25 (74AHC1G08W5-7). All maintain identical electrical performance and are mechanically compatible with standard PCB footprints for their respective package types.
Q: Does the automotive-qualified variant 74AHC1G08GV-Q100,1 have different electrical specifications?
A: No. The 74AHC1G08GV-Q100,1 maintains identical electrical specifications to the standard 74AHC1G08GV,125. The AEC-Q100 qualification indicates compliance with automotive reliability and testing standards, not changes to electrical performance.
Q: What is the minimum operating temperature difference between parts?
A: Most active substitutes operate from -40°C to 125°C, while the original SN74AHC1G08DBVT and onsemi alternatives operate from -55°C to 125°C. For applications requiring -55°C operation, select SN74AHC1G08DBVR, SN74AHC1G08DBV3, or the onsemi parts.
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