SN74LVC2T45MDCTTEP Equivalent & Substitute Parts

Part Overview

The SN74LVC2T45MDCTTEP is a voltage level translator manufactured by Texas Instruments, designed for bidirectional translation between different voltage domains. This device operates as a single circuit with 2 channels, supporting data rates up to 420Mbps with tri-state, non-inverted output configuration. The part is currently in active product status with 3400 units in stock.

Substitute parts are necessary when the original part becomes unavailable, when alternative packaging or performance characteristics better suit specific application requirements, or when design optimization requires different electrical specifications within compatible parameter ranges.

Key Parameters

Parameter	Value
Translator Type	Voltage Level
Channel Type	Bidirectional
Number of Circuits	1
Channels per Circuit	2
Voltage - VCCA	1.65 V ~ 5.5 V
Voltage - VCCB	1.65 V ~ 5.5 V
Output Type	Tri-State, Non-Inverted
Data Rate	420Mbps
Operating Temperature	-55°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	8-LSSOP, 8-MSOP (0.110", 2.80mm Width)
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Translator type must be voltage level translation
Channel configuration must support bidirectional, 2-channel operation
Output type must be tri-state, non-inverted
Voltage supply ranges must accommodate the application requirements
Data rate must meet or exceed 420Mbps minimum
Operating temperature range must cover the required application range
Package compatibility with PCB layout constraints
RoHS and MSL compliance status

Substitute parts are grouped into two categories: direct functional equivalents within the 74LVC and 74LVCH series, and alternative architecture solutions from other manufacturers that meet the same electrical and mechanical requirements.

Parameter Comparison

Part Number	Manufacturer	Series	Voltage VCCA	Voltage VCCB	Data Rate	Operating Temp	Package	Status
SN74LVC2T45MDCTTEP	Texas Instruments	74LVC	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	420Mbps	-55°C ~ 125°C	8-LSSOP	Active
74AVC2T245GUX	Nexperia USA Inc.	74AVC	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	Not specified	-40°C ~ 125°C	10-XQFN	Active
74AVC2T45DC,125	Nexperia USA Inc.	74AVC	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	500Mbps	-40°C ~ 125°C	8-VSSOP	Active
74AVC2T45GF,115	NXP USA Inc.	74AVC	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	500Mbps	-40°C ~ 125°C	8-XSON	Active
74AVC2T45GT,115	Nexperia USA Inc.	74AVC	0.8 V ~ 3.6 V	0.8 V ~ 3.6 V	500Mbps	-40°C ~ 125°C	8-XSON	Active
74LVC2T45GF,115	Nexperia USA Inc.	74LVC	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	420Mbps	-40°C ~ 125°C	8-XSON	Obsolete
74LVC2T45GS,115	NXP USA Inc.	74LVC	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	420Mbps	-40°C ~ 125°C	8-XSON	Active
74LVCH2T45DC,125	Nexperia USA Inc.	74LVCH	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	420Mbps	-40°C ~ 125°C	8-VSSOP	Active
FXL2TD245L10X	Fairchild Semiconductor	-	1.1 V ~ 3.6 V	1.1 V ~ 3.6 V	Not specified	-40°C ~ 85°C	10-UFQFN	Active
FXMAR2102UMX	Fairchild Semiconductor	-	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	50MHz	-40°C ~ 85°C	8-UFQFN	Active
FXWA9306L8X	onsemi	-	1 V ~ 5.5 V	1.8 V ~ 5.5 V	Not specified	-40°C ~ 85°C	8-UFQFN	Active

Engineering Selection Recommendations

Series 74LVC and 74LVCH Direct Equivalents

The 74LVC2T45GS,115 and 74LVCH2T45DC,125 are the primary active substitutes within the same functional family. Both maintain the 420Mbps data rate and 1.2 V ~ 5.5 V supply voltage range of the original part. The 74LVC2T45GS,115 is available in 8-XSON package, while 74LVCH2T45DC,125 uses 8-VSSOP packaging. Both are ROHS3 compliant with MSL rating 1. The 74LVC2T45GF,115 offers identical electrical specifications but carries obsolete product status and should not be selected for new designs.

Series 74AVC Higher Performance Alternatives

The 74AVC2T45DC,125, 74AVC2T45GF,115, and 74AVC2T45GT,115 provide enhanced data rate performance at 500Mbps. However, these parts operate at reduced supply voltage ranges (0.8 V ~ 3.6 V) compared to the original specification (1.65 V ~ 5.5 V). Selection of 74AVC variants is appropriate only when the application operates exclusively within the 0.8 V ~ 3.6 V range. All three 74AVC options are active products with ROHS3 compliance.

Alternative Manufacturer Solutions

Fairchild and onsemi alternatives provide bidirectional translation with different architectural approaches. The FXMAR2102UMX maintains the original voltage range (1.65 V ~ 5.5 V) but operates at reduced temperature range (-40°C ~ 85°C) and lower data rate (50MHz). The FXL2TD245L10X and FXWA9306L8X include auto-direction sensing features but operate at reduced temperature ranges and may not meet higher data rate requirements. These alternatives are suitable only when application constraints permit the reduced operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can I substitute the SN74LVC2T45MDCTTEP with a 74AVC series part?

A: 74AVC series substitution is possible only if your application operates exclusively within the 0.8 V ~ 3.6 V supply voltage range. The original part specifies 1.65 V ~ 5.5 V operation. If your design requires the full 5.5 V supply capability, 74AVC variants are not suitable. The 74AVC series does offer higher data rate performance (500Mbps vs 420Mbps) if voltage compatibility exists.

Q: What is the difference between 74LVC2T45GS,115 and 74LVCH2T45DC,125?

A: Both parts maintain identical electrical specifications: 1.2 V ~ 5.5 V supply range, 420Mbps data rate, and -40°C ~ 125°C operating temperature. The primary difference is packaging: 74LVC2T45GS,115 uses 8-XSON (1.35x1mm), while 74LVCH2T45DC,125 uses 8-VSSOP (0.091" width). Package selection depends on PCB layout constraints and available board space.

Q: Why do some substitute parts have lower operating temperature ranges?

A: The original SN74LVC2T45MDCTTEP operates from -55°C to 125°C. Alternative parts from Fairchild and onsemi are specified for -40°C to 85°C operation. If your application requires operation below -40°C or above 85°C, these alternatives are not suitable. Verify your application's temperature requirements before selecting substitutes with reduced temperature ranges.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts carry ROHS3 compliance status. The original SN74LVC2T45MDCTTEP is also ROHS3 compliant. MSL rating 1 (unlimited moisture sensitivity level) is maintained across all active substitute options, ensuring equivalent handling and storage requirements.

Q: What does "auto-direction sensing" mean in the Fairchild and onsemi alternatives?

A: Auto-direction sensing is an architectural feature that automatically determines translation direction based on signal levels, eliminating the need for external direction control signals. The original SN74LVC2T45MDCTTEP does not include this feature. If your design requires manual direction control, this feature difference must be evaluated for compatibility with your circuit topology.

Q: Can I use FXMAR2102UMX as a direct replacement?

A: FXMAR2102UMX maintains the original voltage range (1.65 V ~ 5.5 V) but operates at reduced temperature range (-40°C ~ 85°C) and significantly lower data rate (50MHz vs 420Mbps). This part is suitable only for low-speed applications operating within the reduced temperature range. For 420Mbps operation, this part is not compatible.

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