74AVC1T45GXZ Voltage Level Translator - Equivalent & Substitute Parts

Part Overview

The 74AVC1T45GXZ is a bidirectional voltage level translator manufactured by Nexperia USA Inc., designed for single-channel signal translation between different voltage domains. This Active product operates across supply voltages from 0.8 V to 3.6 V on both VCCA and VCCB rails, supporting data rates up to 500 Mbps with tri-state output configuration. The device is packaged in a 6-X2SON (1.0x0.8) surface mount form factor and is RoHS3 compliant with unlimited moisture sensitivity rating.

Substitute parts are necessary when the original 74AVC1T45GXZ becomes unavailable, when alternative packaging is required for manufacturing constraints, or when design specifications permit operation within the electrical parameter ranges of equivalent devices.

Key Parameters

Parameter	74AVC1T45GXZ
Translator Type	Voltage Level
Channel Type	Bidirectional
Number of Circuits	1
Channels per Circuit	1
Voltage - VCCA Range	0.8 V ~ 3.6 V
Voltage - VCCB Range	0.8 V ~ 3.6 V
Output Type	Tri-State
Data Rate	500 Mbps
Operating Temperature	-40°C ~ 125°C (TA)
Mounting Type	Surface Mount
Package / Case	6-XFDFN
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the 74AVC1T45GXZ is determined by the following criteria:

Primary Compatibility Requirements:

Translator Type: Voltage Level (bidirectional)
Channel Configuration: 1 Circuit, 1 Channel
Output Type: Tri-State capable
Data Rate: Minimum 500 Mbps (or application-specific requirement)
Voltage Ranges: VCCA and VCCB must overlap or encompass 0.8 V ~ 3.6 V
Operating Temperature: Minimum -40°C ~ 125°C coverage
RoHS3 Compliance: Required for regulatory alignment

Secondary Considerations:

Packaging format (surface mount variants acceptable)
Product Status (Active preferred; Last Time Buy or Obsolete acceptable with inventory verification)
Mounting compatibility with existing PCB designs

Substitute parts are grouped into two categories:

Category A - Direct Functional Equivalents (Recommended): Parts meeting all primary requirements with minimal design changes. These include 74LVC1T45Z6-7, SN74AVC1T45DBVR, and FXLA101L6X.

Category B - Conditional Substitutes (Application-Dependent): Parts with reduced data rate, modified voltage ranges, or different output configurations. These include ADG3233BRJZ-REEL7, LTC1555LEGN-1.8#TRPBF, and NTB0101GM,115. Substitution requires design verification.

Parameter Comparison

Part Number	Manufacturer	VCCA Range	VCCB Range	Data Rate	Output Type	Temp Range	Package	Status
74AVC1T45GXZ	Nexperia USA Inc.	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	500 Mbps	Tri-State	-40°C ~ 125°C	6-XFDFN	Active
74LVC1T45Z6-7	Diodes Incorporated	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	—	Tri-State, Non-Inverted	-40°C ~ 125°C	SOT-563	Active
SN74AVC1T45DBVR	Texas Instruments	1.2 V ~ 3.6 V	1.2 V ~ 3.6 V	500 Mbps	Tri-State, Non-Inverted	-40°C ~ 85°C	SOT-23-6	Active
FXLA101L6X	onsemi	1.1 V ~ 3.6 V	1.1 V ~ 3.6 V	140 Mbps	Tri-State, Non-Inverted	-40°C ~ 85°C	6-UFDFN	Active
ADG3233BRJZ-REEL7	Analog Devices Inc.	1.65 V ~ 3.6 V	1.65 V ~ 3.6 V	10 Mbps	Non-Inverted	-40°C ~ 85°C	SOT-23-8	Active
NTB0101GM,115	NXP USA Inc.	1.2 V ~ 3.6 V	1.65 V ~ 5.5 V	100 Mbps	Tri-State, Non-Inverted	-40°C ~ 125°C	6-XSON, SOT886	Obsolete
NTS0101GW,125	NXP USA Inc.	1.65 V ~ 3.6 V	2.3 V ~ 5.5 V	50 Mbps	Open Drain, Tri-State	-40°C ~ 125°C	6-TSSOP	Last Time Buy
LTC1555LEGN-1.8#TRPBF	Analog Devices Inc.	1.425 V ~ 4.4 V	2.6 V ~ 6 V	—	Open Drain	-40°C ~ 85°C	16-SSOP	Active
NLSX5011AMUTCG	onsemi	0.9 V ~ 4.5 V	0.9 V ~ 4.5 V	100 Mbps	Tri-State, Non-Inverted	-55°C ~ 125°C	6-UDFN	Obsolete

Engineering Selection Recommendations

For Direct Replacement (Active Status, Minimal Design Changes):

SN74AVC1T45DBVR (Texas Instruments) is the primary recommendation. It maintains the 74AVC series designation, supports 500 Mbps data rate, operates across 1.2 V ~ 3.6 V on both rails, and is Active with full RoHS3 compliance. The SOT-23-6 package requires PCB layout adjustment from the original 6-XFDFN, but electrical performance is equivalent within the specified voltage range.

74LVC1T45Z6-7 (Diodes Incorporated) is an alternative Active substitute with tri-state output and -40°C ~ 125°C operating range. The 1.65 V minimum supply voltage is higher than the original 0.8 V specification; this part is suitable only for applications operating above 1.65 V on both supply rails.

For Space-Constrained or High-Speed Applications:

FXLA101L6X (onsemi) provides auto-direction sensing and power-off protection features in a compact 6-UFDFN package. Data rate is limited to 140 Mbps, making it unsuitable for applications requiring 500 Mbps performance. Operating temperature range is -40°C ~ 85°C.

For Low-Speed or SIM Card Interface Applications:

LTC1555LEGN-1.8#TRPBF (Analog Devices Inc.) is an Active part with SIM card interface and thermal-shutdown protection. This part is not suitable for high-speed translation due to unspecified data rate and open-drain output configuration. Voltage ranges are asymmetric (VCCA: 1.425 V ~ 4.4 V; VCCB: 2.6 V ~ 6 V).

Obsolete or Last Time Buy Status:

NTB0101GM,115 (NXP USA Inc., Obsolete) and NLSX5011AMUTCG (onsemi, Obsolete) are not recommended for new designs. NTS0101GW,125 (NXP USA Inc., Last Time Buy) has limited availability and should be avoided unless existing inventory is committed.

Compliance Verification:

All recommended substitutes maintain RoHS3 compliance and REACH Unaffected status. ECCN classification remains EAR99 across all parts. Moisture sensitivity level is 1 (Unlimited) for all candidates.

Frequently Asked Questions (FAQ)

Q: Can 74LVC1T45Z6-7 replace 74AVC1T45GXZ in all applications?

A: 74LVC1T45Z6-7 is functionally compatible for applications operating at supply voltages of 1.65 V or higher on both VCCA and VCCB. The original 74AVC1T45GXZ supports operation down to 0.8 V; if your design requires sub-1.65 V operation, 74LVC1T45Z6-7 is not suitable. Both parts support -40°C ~ 125°C temperature range and tri-state output.

Q: What is the primary limitation of ADG3233BRJZ-REEL7 as a substitute?

A: ADG3233BRJZ-REEL7 has a maximum data rate of 10 Mbps, compared to 500 Mbps for the 74AVC1T45GXZ. This part is suitable only for low-speed applications. Additionally, the operating temperature range is limited to -40°C ~ 85°C, and the package is SOT-23-8 (8-pin) versus the original 6-pin configuration.

Q: Is FXLA101L6X suitable for 500 Mbps applications?

A: No. FXLA101L6X supports a maximum data rate of 140 Mbps. While it offers auto-direction sensing and power-off protection features, it cannot meet the 500 Mbps specification of the original part. Use this substitute only for applications with data rates up to 140 Mbps.

Q: Why are NTB0101GM,115 and NLSX5011AMUTCG marked as Obsolete?

A: Both parts have reached end-of-life status and are no longer in active production. While limited inventory may be available, these parts should not be selected for new designs. Active alternatives such as SN74AVC1T45DBVR or 74LVC1T45Z6-7 are preferred.

Q: Can I use LTC1555LEGN-1.8#TRPBF for general-purpose voltage translation?

A: LTC1555LEGN-1.8#TRPBF is designed specifically for SIM card interface applications and includes thermal-shutdown protection. It features open-drain output (not tri-state) and asymmetric voltage ranges (VCCA: 1.425 V ~ 4.4 V; VCCB: 2.6 V ~ 6 V). This part is not recommended for general-purpose bidirectional translation requiring tri-state output and symmetric voltage ranges.

Q: What packaging considerations apply when substituting 74AVC1T45GXZ?

A: The original 74AVC1T45GXZ uses 6-XFDFN packaging. Substitutes employ different packages: SN74AVC1T45DBVR (SOT-23-6), 74LVC1T45Z6-7 (SOT-563), FXLA101L6X (6-UFDFN), and ADG3233BRJZ-REEL7 (SOT-23-8). PCB layout and footprint modifications are required for each alternative. Verify pin assignments and signal routing before implementation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain RoHS3 compliance and REACH Unaffected status, consistent with the original 74AVC1T45GXZ specification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message