74LVC08ADR2G Equivalent & Substitute Parts

Part Overview

The 74LVC08ADR2G is a 4-channel AND gate logic IC manufactured by onsemi, housed in a 14-SOIC surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 74LVC08 series provides basic AND logic functionality suitable for digital signal processing and logic-level conversion applications across a wide voltage range.

Substiute Parts

74LVC08ADR2G

onsemiIn Stock: 87774LVC08ADR2G Datasheet

Current PartRFQ

MC74LCX08DR2G

onsemiIn Stock: 18881MC74LCX08DR2G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74LVC08ADR2G is determined by the following critical parameters:

• Logic Function: AND gate with 4 channels and 2 inputs per channel
• Package Compatibility: 14-SOIC surface mount form factor
• Supply Voltage Range: Minimum 1.2V operation capability
• Output Drive Capability: 24mA output current (high and low)
• Propagation Delay: Maximum 4.8ns at 3.3V with 50pF load
• Operating Temperature Range: -40°C to 125°C minimum
• Compliance: ROHS3 and REACH requirements

The MC74LCX08DR2G qualifies as a direct substitute based on matching logic function, package type, and output drive specifications. However, the substitute exhibits a narrower supply voltage range (2V ~ 3.6V versus 1.2V ~ 3.6V) and reduced maximum operating temperature (85°C versus 125°C), which may limit applicability in specific low-voltage or high-temperature environments.

Parameter Comparison

Engineering Selection Recommendations

The MC74LCX08DR2G is an active product with confirmed availability (18,780 pcs in stock), making it the preferred substitute for the obsolete 74LVC08ADR2G. Both components maintain ROHS3 compliance and identical package geometry, ensuring direct PCB compatibility.

Selection between these parts depends on application requirements:

• Use 74LVC08ADR2G only if designs require operation below 2V supply voltage or above 85°C ambient temperature, and if legacy inventory remains available.
• Use MC74LCX08DR2G for new designs and ongoing production, as it offers active product status, superior quiescent current performance (10 µA versus 40 µA), and confirmed supply chain availability.

The MC74LCX08DR2G exhibits slightly higher propagation delay (5.5ns versus 4.8ns), which is negligible for most logic applications but should be verified in timing-critical designs operating at maximum frequency.

Frequently Asked Questions (FAQ)

Q: Can MC74LCX08DR2G replace 74LVC08ADR2G in all applications?

A: MC74LCX08DR2G is compatible for applications operating within 2V to 3.6V supply voltage and -40°C to 85°C temperature range. Applications requiring sub-2V operation or temperatures above 85°C require the original 74LVC08ADR2G or alternative parts rated for those conditions.

Q: What is the difference between 74LVC and 74LCX series?

A: Both series provide 4-channel AND gate logic in identical 14-SOIC packages with matching output drive capability. The 74LCX series (MC74LCX08DR2G) operates at lower quiescent current and narrower voltage/temperature ranges compared to the 74LVC series (74LVC08ADR2G).

Q: Are the packages physically identical?

A: Yes. Both parts use 14-SOIC (0.154", 3.90mm width) surface mount packages with identical pin configurations, allowing direct PCB footprint compatibility without layout modifications.

Q: What is the propagation delay difference impact?

A: The 0.7ns difference (4.8ns versus 5.5ns) represents approximately 15% longer delay in the substitute. This is typically insignificant for standard logic applications but should be evaluated in designs with tight timing margins or high-frequency operation above 100 MHz.

Q: Are both parts RoHS compliant?

A: Yes. Both 74LVC08ADR2G and MC74LCX08DR2G are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.