74AXP1T125GWH Equivalent & Substitute Parts

Part Overview

The 74AXP1T125GWH is a unidirectional voltage level translator IC manufactured by Nexperia USA Inc., designed for single-channel signal translation between different voltage domains. This device operates with VCCA ranging from 0.7 V to 2.75 V and VCCB from 1.2 V to 5.5 V, featuring tri-state output capability in a 6-TSSOP package. The part is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	74AXP1T125GWH
Manufacturer	Nexperia USA Inc.
Category	Logic
Translator Type	Voltage Level
Channel Type	Unidirectional
Number of Circuits	1
Channels per Circuit	1
Voltage - VCCA	0.7 V ~ 2.75 V
Voltage - VCCB	1.2 V ~ 5.5 V
Output Type	Tri-State
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	6-TSSOP, SC-88, SOT-363
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74AXP1T125GWH is determined by the following critical parameters:

Primary Substitution Criteria:

Translator Type: Voltage Level (unidirectional)
Number of Circuits: 1
Channels per Circuit: 1
Output Type: Tri-State capability
Operating Temperature Range: -40°C ~ 85°C minimum
Voltage compatibility: VCCA range 0.7 V ~ 2.75 V and VCCB range 1.2 V ~ 5.5 V
Surface mount packaging
RoHS3 compliance

Substitute Parts Identified:

Group 1 - Voltage Level Translators with Tri-State Output:

NLSV1T240MUTBG (onsemi) - Tri-State, Inverted output
NLVSV1T244MUTBG (onsemi) - Tri-State, Non-Inverted output

Group 2 - Buffer/Translator Devices with Push-Pull Output:

FXLP34P5X (onsemi)
NLSV1T34AMUTCG (onsemi)
NLSV1T34DFT2G (onsemi)
NLSV1T34MUTBG (onsemi)
SN74AUP1T34DCKR (Texas Instruments)
SN74AUP1T34DSFR (Texas Instruments)
SN74AUP1T34QDCKRQ1 (Texas Instruments)

Group 3 - Analog Devices Alternative:

ADG3231BRJZ-REEL7 (Analog Devices Inc.) - Non-Inverted output with 10Mbps data rate

Parameter Comparison

Part Number	Manufacturer	Translator Type	Channel Type	Circuits	Output Type	Voltage - VCCA	Voltage - VCCB	Operating Temp	Package	Status
74AXP1T125GWH	Nexperia	Voltage Level	Unidirectional	1	Tri-State	0.7-2.75V	1.2-5.5V	-40 to 85°C	6-TSSOP	Obsolete
NLSV1T240MUTBG	onsemi	Voltage Level	Unidirectional	1	Tri-State, Inverted	0.9-4.5V	0.9-4.5V	-40 to 85°C	6-UDFN	Obsolete
NLVSV1T244MUTBG	onsemi	Voltage Level	Unidirectional	1	Tri-State, Non-Inverted	0.9-4.5V	0.9-4.5V	-40 to 85°C	6-UDFN	Obsolete
ADG3231BRJZ-REEL7	Analog Devices	Voltage Level	Unidirectional	1	Non-Inverted	1.65-3.6V	1.65-3.6V	-40 to 85°C	SOT-23-6	Active
FXLP34P5X	onsemi	Voltage Level	Unidirectional	1	Non-Inverted	1-3.6V	1-3.6V	-40 to 85°C	SC-70-5	Active
NLSV1T34AMUTCG	onsemi	Buffer, Non-Inverting	Unidirectional	1	Push-Pull	0.9-4.5V	0.9-4.5V	-40 to 85°C	6-UDFN	Obsolete
NLSV1T34DFT2G	onsemi	Buffer, Non-Inverting	Unidirectional	1	Push-Pull	0.9-4.5V	0.9-4.5V	-40 to 85°C	SC-70-5	Obsolete
NLSV1T34MUTBG	onsemi	Buffer, Non-Inverting	Unidirectional	1	Push-Pull	0.9-4.5V	0.9-4.5V	-40 to 85°C	6-UDFN	Obsolete
SN74AUP1T34DCKR	Texas Instruments	Buffer, Non-Inverting	Unidirectional	1	Push-Pull	0.9-3.6V	0.9-3.6V	-40 to 85°C	SC-70-5	Active
SN74AUP1T34DSFR	Texas Instruments	Buffer, Non-Inverting	Unidirectional	1	Push-Pull	0.9-3.6V	0.9-3.6V	-40 to 85°C	6-SON	Active
SN74AUP1T34QDCKRQ1	Texas Instruments	Buffer, Non-Inverting	Unidirectional	1	Push-Pull	0.9-3.6V	0.9-3.6V	-40 to 125°C	SC-70-5	Active

Engineering Selection Recommendations

For Direct Tri-State Output Replacement:

NLVSV1T244MUTBG is the closest functional equivalent, offering tri-state non-inverted output with unidirectional translation. This part maintains the same operating temperature range and provides automotive-grade qualification (AEC-Q100) with over-voltage and power-off protection. The voltage range (0.9 V ~ 4.5 V) encompasses the original part's requirements. Package change from 6-TSSOP to 6-UDFN requires PCB layout modification.

For Active Production Alternatives:

ADG3231BRJZ-REEL7 (Analog Devices) provides active product status with tri-state capability and 10Mbps data rate specification. Voltage range limitation (1.65 V ~ 3.6 V) restricts compatibility to applications not requiring the original 0.7 V minimum VCCA operation.

For Push-Pull Output Applications:

SN74AUP1T34DSFR and SN74AUP1T34DCKR (Texas Instruments) offer active status with extended availability. These parts replace tri-state functionality with push-pull output, suitable for applications not requiring high-impedance state. The 74AUP series maintains 0.9 V ~ 3.6 V supply voltage compatibility.

For Automotive Applications:

SN74AUP1T34QDCKRQ1 provides AEC-Q100 qualification with extended temperature range (-40°C ~ 125°C), appropriate for automotive designs requiring higher temperature operation than the original specification.

Frequently Asked Questions (FAQ)

Q: Can NLVSV1T244MUTBG directly replace 74AXP1T125GWH in existing designs?

A: Functional replacement is possible with circuit verification. The tri-state output and unidirectional translation match the original part. Package change from 6-TSSOP to 6-UDFN requires PCB redesign. Voltage range (0.9 V ~ 4.5 V) covers most applications, but designs operating below 0.9 V VCCA require alternative selection.

Q: What is the difference between tri-state and push-pull output types?

A: Tri-state output provides three states: high, low, and high-impedance (disabled). Push-pull output provides only high and low states without high-impedance capability. Applications requiring bus sharing or open-drain functionality need tri-state devices. Single-point drivers can use push-pull alternatives.

Q: Why do some substitutes show different voltage ranges?

A: Voltage range differences reflect design variations across manufacturers. The 74AXP1T125GWH operates 0.7 V ~ 2.75 V on VCCA and 1.2 V ~ 5.5 V on VCCB. Substitutes with narrower ranges (e.g., 0.9 V ~ 4.5 V) may not support the original minimum voltage specifications. Application requirements determine acceptable range limitations.

Q: Are all listed substitutes RoHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification matching the original part's environmental qualification.

Q: What packaging options are available for substitution?

A: Original 6-TSSOP packaging is replaced by 6-UDFN, 6-SON, SC-70-5, and SOT-23-6 alternatives. Each package requires different PCB footprint design. SC-70-5 and SOT-23-6 packages are smaller, while 6-UDFN and 6-SON offer similar form factors to the original.

Q: Which substitute offers the best active product status?

A: ADG3231BRJZ-REEL7, SN74AUP1T34DSFR, SN74AUP1T34DCKR, and SN74AUP1T34QDCKRQ1 all carry active product status with ongoing manufacturer support and availability. All other substitutes are obsolete.

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