74LVC27DB,112 Equivalent & Substitute Parts

Part Overview

The 74LVC27DB,112 is a NOR Gate IC featuring 3 channels with 3 inputs per channel, manufactured by NXP USA Inc. in a 14-SSOP surface mount package. This component operates across a supply voltage range of 1.2V to 3.6V with a maximum propagation delay of 2.4ns at 3.3V with 50pF load. The product is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

74LVC27DB,112

NXP USA Inc.In Stock: 106474LVC27DB,112 Datasheet

Current PartRFQ

SN74LV27ADBR

Texas InstrumentsIn Stock: 3225SN74LV27ADBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74LVC27DB,112 is determined by the following critical parameters:

• Logic Function: NOR Gate with identical 3 channels and 3 inputs per channel
• Package Compatibility: 14-SSOP surface mount package with matching physical dimensions (0.209", 5.30mm Width)
• Operating Temperature Range: -40°C to 85°C
• Supply Voltage Compatibility: The substitute must operate within or encompass the original supply voltage range
• Output Drive Capability: Current output specifications must meet or exceed application requirements
• Propagation Delay: Timing characteristics must be suitable for the intended application
• Environmental Compliance: RoHS3 compliance and MSL rating must be maintained

The SN74LV27ADBR from Texas Instruments meets these substitution criteria through identical logic configuration, package type, and environmental specifications.

Parameter Comparison

Engineering Selection Recommendations

The SN74LV27ADBR qualifies as a direct substitute for the 74LVC27DB,112 based on functional equivalence and compliance requirements. Both components maintain ROHS3 compliance and MSL Level 1 rating, ensuring environmental and regulatory compatibility. The identical package footprint (14-SSOP) and logic configuration enable direct board-level replacement without layout modifications.

The SN74LV27ADBR is classified as active product status, providing long-term availability and supply chain stability compared to the obsolete 74LVC27DB,112. The extended supply voltage range (2V ~ 5.5V) of the substitute encompasses the original operating range, supporting broader application flexibility.

Frequently Asked Questions (FAQ)

Q: Can the SN74LV27ADBR directly replace the 74LVC27DB,112 on existing PCBs?

A: Yes. Both components use the 14-SSOP package with identical physical dimensions and pin configuration. No PCB layout modifications are required for direct substitution.

Q: What are the key differences in electrical performance?

A: The SN74LV27ADBR operates at a higher supply voltage range (2V ~ 5.5V versus 1.2V ~ 3.6V), exhibits lower quiescent current (20 µA versus 40 µA), and provides reduced output drive capability (12mA versus 24mA). Propagation delay is longer at 7.9ns compared to 2.4ns, measured at different supply voltages.

Q: Is the SN74LV27ADBR suitable for low-voltage applications below 2V?

A: No. The minimum supply voltage for the SN74LV27ADBR is 2V. Applications requiring operation below 2V require alternative components or the original 74LVC27DB,112 if available from inventory.

Q: Are there any compliance or certification differences?

A: Both components maintain identical RoHS3 compliance and MSL Level 1 ratings. No compliance barriers exist for substitution.

Q: What is the impact of the longer propagation delay in the SN74LV27ADBR?

A: The SN74LV27ADBR exhibits 7.9ns propagation delay at 5V compared to 2.4ns for the 74LVC27DB,112 at 3.3V. Applications with strict timing requirements must evaluate whether this delay increase is acceptable for system performance.