SN74ALVC125PWRG4 Equivalent & Substitute Parts

Part Overview

The SN74ALVC125PWRG4 is a non-inverting buffer logic IC manufactured by Texas Instruments, featuring 4 elements with 3-state output capability in a 14-TSSOP surface mount package. This device is discontinued at DiGi Electronics but remains available through alternative sources. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain flexibility, and support long-term production requirements when the primary part number 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 ~ 85°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

Substitution eligibility for the SN74ALVC125PWRG4 is determined by strict equivalence across 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 ~ 85°C (TA)
Package / Case: 14-TSSOP (0.173", 4.40mm Width)
Mounting Type: Surface Mount

All substitute parts listed below meet these electrical and mechanical specifications. Substitutes are grouped by manufacturer and product status to facilitate selection based on availability and supply chain requirements.

Parameter Comparison

Part Number	Manufacturer	Series	Logic Type	Elements	Output Type	Current (mA)	Voltage (V)	Temp Range (°C)	Package	Product Status	Inventory (Pcs)
SN74ALVC125PWRG4	Texas Instruments	74ALVC	Buffer, Non-Inverting	4	3-State	24, 24	1.65 ~ 3.6	-40 ~ 85	14-TSSOP	Discontinued	1114
SN74ALVC125PWR	Texas Instruments	74ALVC	Buffer, Non-Inverting	4	3-State	24, 24	1.65 ~ 3.6	-40 ~ 85	14-TSSOP	Active	2160
SN74ALVC126PWR	Texas Instruments	74ALVC	Buffer, Non-Inverting	4	3-State	24, 24	1.65 ~ 3.6	-40 ~ 85	14-TSSOP	Active	1940
SN74LVC125AIPWREP	Texas Instruments	74LVC	Buffer, Non-Inverting	4	3-State	24, 24	1.65 ~ 3.6	-40 ~ 85	14-TSSOP	Active	5600
74ALVC125PW,118	NXP USA Inc.	74ALVC	Buffer, Non-Inverting	4	3-State	24, 24	1.65 ~ 3.6	-40 ~ 85	14-TSSOP	Active	10721
74ALVC125PW-Q100J	Nexperia USA Inc.	74ALVC	Buffer, Non-Inverting	4	3-State	24, 24	1.65 ~ 3.6	-40 ~ 85	14-TSSOP	Active	895
74LCX125FT	Toshiba Semiconductor and Storage	TC74LCX	Buffer, Non-Inverting	4	3-State	24, 24	1.65 ~ 3.6	-40 ~ 85	14-TSSOP	Active	1250
74LCX126FT	Toshiba Semiconductor and Storage	74LCX	Buffer, Non-Inverting	4	3-State	24, 24	1.65 ~ 3.6	-40 ~ 85	14-TSSOP	Active	1200

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and mechanical compatibility with the SN74ALVC125PWRG4 across the specified operating parameters. Selection should be based on the following criteria:

Active Product Status Priority: SN74ALVC125PWR, SN74ALVC126PWR, SN74LVC125AIPWREP, 74ALVC125PW,118, 74ALVC125PW-Q100J, 74LCX125FT, and 74LCX126FT are all active products with confirmed availability. These are preferred for new designs and ongoing production.

Compliance and Certification: All substitute parts are ROHS3 compliant with MSL 1 (Unlimited) rating, ensuring compatibility with standard manufacturing and storage requirements. The 74ALVC125PW-Q100J carries AEC-Q100 automotive qualification, suitable for automotive applications.

Inventory Availability: The 74ALVC125PW,118 (NXP USA Inc.) offers the highest inventory level at 10,721 pieces, followed by SN74LVC125AIPWREP (Texas Instruments) at 5,600 pieces. These options provide superior supply chain security for high-volume production.

Manufacturer Continuity: Texas Instruments substitutes (SN74ALVC125PWR, SN74ALVC126PWR, SN74LVC125AIPWREP) maintain the original manufacturer relationship and are recommended for designs requiring consistent vendor qualification.

Frequently Asked Questions (FAQ)

Q: Can SN74ALVC125PWR be used as a direct replacement for SN74ALVC125PWRG4?

A: Yes. Both parts are Texas Instruments 74ALVC series buffers with identical electrical specifications (4 elements, 3-state output, 24mA drive current, 1.65V–3.6V supply range, -40°C to 85°C operating temperature) and the same 14-TSSOP package. The primary difference is product status: SN74ALVC125PWR is active, while SN74ALVC125PWRG4 is discontinued.

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

A: Both series meet the specified electrical and mechanical parameters for this application. The 74LVC series (represented by SN74LVC125AIPWREP) is an alternative logic family from Texas Instruments. Selection between series should be based on availability and existing design qualification.

Q: Are NXP and Nexperia parts interchangeable with Texas Instruments parts?

A: Yes, for this application. The 74ALVC125PW,118 (NXP USA Inc.) and 74ALVC125PW-Q100J (Nexperia USA Inc.) meet all electrical and mechanical specifications. Nexperia is a separate entity from NXP but manufactures compatible logic devices. Verify any design-specific qualification requirements before substitution.

Q: What does AEC-Q100 qualification mean for the 74ALVC125PW-Q100J?

A: AEC-Q100 is an automotive industry qualification standard. The 74ALVC125PW-Q100J is qualified for automotive applications and meets additional reliability and testing requirements. This part is suitable for automotive designs but is not required for general industrial or consumer applications.

Q: Can Toshiba 74LCX125FT and 74LCX126FT be used interchangeably with Texas Instruments parts?

A: Yes. Both Toshiba parts meet the specified electrical parameters and 14-TSSOP package requirements. The TC74LCX series is a compatible alternative logic family. Selection should be based on availability and existing supplier relationships.

Q: What packaging options are available for these substitutes?

A: Packaging varies by supplier: SN74ALVC125PWR is available in Cut Tape (CT) & Digi-Reel; SN74ALVC126PWR and SN74LVC125AIPWREP are supplied in Tape & Reel (TR); 74ALVC125PW,118 is supplied in Bulk; 74ALVC125PW-Q100J is supplied in Tape & Reel (TR); Toshiba parts (74LCX125FT, 74LCX126FT) are supplied in Cut Tape (CT) & Digi-Reel. All are surface mount compatible with standard pick-and-place equipment.

Q: Are all these parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, meeting environmental and hazardous substance restrictions for commercial and industrial applications.

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