SN74LVC14ADBRE4 Equivalent & Substitute Parts

Part Overview

The SN74LVC14ADBRE4 is a 6-channel inverter IC with Schmitt trigger inputs manufactured by Texas Instruments in a 14-SSOP package. This part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement. The device operates across a 1.65V to 3.6V supply voltage range and is suitable for low-voltage logic applications requiring noise immunity through Schmitt trigger functionality.

Substiute Parts

SN74LVC14ADBRE4

Texas InstrumentsIn Stock: 970SN74LVC14ADBRE4 Datasheet

Current PartRFQ

SN74LVC14ADBR

Texas InstrumentsIn Stock: 4836SN74LVC14ADBR Datasheet

MFR RecommendedRFQ

74LCX14MTC

Fairchild SemiconductorIn Stock: 1025474LCX14MTC Datasheet

MFR RecommendedRFQ

74LCX14MTCX

onsemiIn Stock: 1915174LCX14MTCX Datasheet

MFR RecommendedRFQ

74LVC14APW,118

NXP SemiconductorsIn Stock: 20976674LVC14APW,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SN74LVC14ADBRE4 is determined by the following critical parameters:

• Logic Function: 6-channel inverter with Schmitt trigger
• Supply Voltage Range: Minimum 1.65V operation capability
• Output Drive Capability: 24mA output current (high and low)
• Propagation Delay: Maximum 6.2ns at 3.3V with 50pF load
• Package Compatibility: 14-pin surface mount package (SSOP or TSSOP variants acceptable)
• Operating Temperature Range: -40°C to 125°C minimum
• Compliance: ROHS3 and REACH requirements

Substitute parts are grouped into two categories based on supply voltage range compatibility:

Group 1 - Full Range (1.65V ~ 3.6V): SN74LVC14ADBR maintains identical electrical specifications and supply voltage range, differing only in packaging format (Tape & Reel vs. individual packaging).

Group 2 - Reduced Range (2V ~ 3.6V): 74LCX14MTC and 74LCX14MTCX operate at a minimum 2V supply voltage, representing a narrower operating range. These parts are functionally equivalent for applications not requiring sub-2V operation.

Group 3 - Extended Range (1.2V ~ 3.6V): 74LVC14APW,118 extends the lower supply voltage limit to 1.2V, offering broader voltage compatibility at the cost of increased quiescent current.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SN74LVC14ADBR

The SN74LVC14ADBR is the direct equivalent to the SN74LVC14ADBRE4, manufactured by Texas Instruments with identical electrical specifications and supply voltage range. The only difference is packaging format (Tape & Reel vs. individual packaging). This part maintains active product status and full ROHS3 compliance. Selection of this part eliminates any design risk related to voltage range or thermal performance changes.

Secondary Recommendation: 74LCX14MTCX

The 74LCX14MTCX from onsemi is suitable for applications where the minimum supply voltage requirement is 2V or higher. This part is actively produced with ROHS3 compliance and high inventory availability. The 0.3ns increase in propagation delay and 9µA increase in quiescent current are acceptable trade-offs for applications not requiring sub-2V operation. The 14-TSSOP package is physically smaller than the original 14-SSOP, requiring PCB layout verification.

Tertiary Recommendation: 74LVC14APW,118

The 74LVC14APW,118 from NXP Semiconductors extends the lower supply voltage limit to 1.2V, providing the broadest voltage compatibility. However, quiescent current increases to 40µA and propagation delay extends to 8ns. This part is suitable only for applications where extended low-voltage operation is critical and power consumption constraints are not limiting.

Not Recommended: 74LCX14MTC

While functionally equivalent, the 74LCX14MTC from Fairchild Semiconductor lacks specified RoHS compliance documentation and has lower inventory availability compared to the onsemi equivalent (74LCX14MTCX).

Frequently Asked Questions (FAQ)

Q: Can I use 74LCX14MTCX as a direct replacement for SN74LVC14ADBRE4?

A: The 74LCX14MTCX is functionally compatible for applications operating at 2V or higher supply voltage. The primary differences are: (1) minimum supply voltage is 2V instead of 1.65V, (2) quiescent current is 10µA instead of 1µA, (3) propagation delay is 6.5ns instead of 6.2ns, and (4) the package is 14-TSSOP instead of 14-SSOP. PCB layout changes are required due to package size differences.

Q: What is the difference between 14-SSOP and 14-TSSOP packages?

A: Both are 14-pin surface mount packages. The 14-SSOP (Shrink Small Outline Package) has a body width of 0.209" (5.30mm), while the 14-TSSOP (Thin Shrink Small Outline Package) has a body width of 0.173" (4.40mm). The TSSOP is physically smaller and requires different PCB footprints. Pin pitch and electrical characteristics remain compatible.

Q: Is the SN74LVC14ADBR available in the same packaging as the original part?

A: The SN74LVC14ADBR is supplied in Tape & Reel (TR) format, while the SN74LVC14ADBRE4 was supplied in individual packaging. Both use the 14-SSOP package. Tape & Reel format is standard for high-volume production and is compatible with automated assembly equipment.

Q: Why does 74LVC14APW,118 have higher quiescent current?

A: The 74LVC14APW,118 extends the lower supply voltage limit to 1.2V through different internal circuit design. This design trade-off results in increased quiescent current (40µA vs. 1µA). This part is suitable only when sub-2V operation is required.

Q: Can I use these parts interchangeably in my existing design?

A: Electrical interchangeability depends on your specific supply voltage range and performance requirements. All substitute parts maintain the same logic function, output drive capability, and operating temperature range. Verify that your minimum supply voltage requirement is met by the selected substitute. For 14-TSSOP packages, PCB layout changes are required.

Q: What compliance certifications do these parts carry?

A: SN74LVC14ADBR, 74LCX14MTCX, and 74LVC14APW,118 are ROHS3 compliant. All parts are REACH unaffected and classified as EAR99 for export control purposes. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts.