SN74LVC126APWRE4 Equivalent & Substitute Parts

Part Overview

The SN74LVC126APWRE4 is a non-inverting buffer logic integrated circuit manufactured by Texas Instruments, part of the 74LVC series. This device features 4 elements with 1 bit per element, 3-state output capability, and operates across a supply voltage range of 1.65V to 3.6V. The component is packaged in a 14-TSSOP surface mount configuration with output current capability of 24mA for both high and low states.

The SN74LVC126APWRE4 is currently discontinued at DiGi Electronics. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure production availability, and support long-term system reliability when the primary part becomes unavailable.

Key Parameters

Parameter	Value
Logic Type	Buffer, Non-Inverting
Number of Elements	4
Number of Bits per Element	1
Output Type	3-State
Current - Output High, Low	24mA, 24mA
Voltage - Supply	1.65V ~ 3.6V
Operating Temperature	-40°C ~ 125°C (TA)
Package / Case	14-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SN74LVC126APWRE4 are qualified based on the following critical parameters:

Logic Type: Buffer, Non-Inverting
Number of Elements: 4
Number of Bits per Element: 1
Output Type: 3-State
Current - Output High, Low: 24mA, 24mA
Voltage - Supply: 1.65V ~ 3.6V
Operating Temperature: -40°C ~ 125°C (TA)
Package / Case: 14-TSSOP (0.173", 4.40mm Width)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

All substitute parts listed maintain identical electrical specifications and physical packaging. Variations exist in product status (Active vs. Discontinued), packaging format (Cut Tape vs. Tape & Reel), and automotive qualification grades where applicable.

Parameter Comparison

Manufacturer Part Number	Base Product	Product Status	Packaging	Grade	Qualification	Inventory (Pcs)
SN74LVC126APWRE4	74LVC126	Discontinued at DiGi Electronics	Cut Tape (CT) & Digi-Reel®	Standard	—	1058
CLVC125AQPWRG4Q1	CLVC125	Active	Tape & Reel (TR)	Automotive	AEC-Q100	1744
CLVC126AQPWRG4Q1	CLVC126	Active	Tape & Reel (TR)	Automotive	AEC-Q100	1322
SN74LVC125APWR	74LVC125	Active	Cut Tape (CT) & Digi-Reel®	Standard	—	56300
SN74LVC125APWRE4	74LVC125	Discontinued at DiGi Electronics	Cut Tape (CT) & Digi-Reel®	Standard	—	2173
SN74LVC125APWRG3	74LVC125	Active	Tape & Reel (TR)	Standard	—	4761
SN74LVC125APWT	74LVC125	Active	Tape & Reel (TR)	Standard	—	6453
SN74LVC125AQPWRQ1	74LVC125	Active	Tape & Reel (TR)	Automotive	AEC-Q100	6300
SN74LVC126APWR	74LVC126	Active	Tape & Reel (TR)	Standard	—	24300
SN74LVC126APWRG4	74LVC126	Discontinued at DiGi Electronics	Cut Tape (CT) & Digi-Reel®	Standard	—	1900
SN74LVC126APWT	74LVC126	Active	Tape & Reel (TR)	Standard	—	3100

Engineering Selection Recommendations

For applications requiring immediate availability and long-term supply assurance, select parts with Active product status. SN74LVC126APWR and SN74LVC126APWT maintain identical electrical and mechanical specifications to the primary part while offering superior inventory levels and active manufacturing status.

For automotive applications requiring AEC-Q100 qualification, CLVC126AQPWRG4Q1 provides equivalent functionality with automotive-grade certification. This part is suitable for designs requiring enhanced reliability and traceability in automotive environments.

The 74LVC125 base product variants (SN74LVC125APWR, SN74LVC125APWT, SN74LVC125APWRG3, SN74LVC125AQPWRQ1) are parametrically equivalent and share identical electrical characteristics, package geometry, and thermal specifications. These parts are available in higher quantities and with active product status, making them suitable alternatives when design flexibility permits base product substitution.

Packaging format selection (Cut Tape vs. Tape & Reel) depends on assembly process requirements. Cut Tape format is appropriate for lower-volume or manual assembly operations, while Tape & Reel format is standard for automated pick-and-place manufacturing.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC125 variants substitute for SN74LVC126 variants?

A: Yes. Both base products (74LVC125 and 74LVC126) share identical electrical specifications, output characteristics, supply voltage range, operating temperature range, and 14-TSSOP package geometry. The substitution is valid from an electrical and mechanical standpoint.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) & Digi-Reel® format is supplied on individual tape segments suitable for manual handling or lower-volume assembly. Tape & Reel (TR) format provides continuous reel packaging optimized for automated pick-and-place assembly equipment. Both formats contain identical components; packaging selection depends on manufacturing process requirements.

Q: Are automotive-grade parts (AEC-Q100) compatible with standard applications?

A: Automotive-grade parts with AEC-Q100 qualification meet or exceed standard part specifications and are fully compatible with non-automotive applications. These parts provide enhanced reliability and traceability but may carry higher cost. Use automotive-grade parts when design requirements or customer specifications mandate AEC-Q100 certification.

Q: What does "Discontinued at DiGi Electronics" mean for part selection?

A: Discontinued at DiGi Electronics indicates the part is no longer actively stocked or manufactured by this distributor. However, existing inventory may remain available. For new designs or long-term production, select parts with Active product status to ensure sustained supply chain availability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), matching the environmental and regulatory specifications of the primary part.

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

A: Yes. All substitute parts share identical 14-TSSOP package geometry and pin configuration. Direct PCB footprint compatibility is maintained across all listed alternatives without design modification.

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