SN74LVC2T45DCUTG4 Equivalent & Substitute Parts

Part Overview

The SN74LVC2T45DCUTG4 is a bidirectional voltage level translator manufactured by Texas Instruments, designed for logic signal conversion between different voltage domains. This device features 1 circuit with 2 channels per circuit, supporting data rates up to 420 Mbps with tri-state, non-inverted output configuration. The part is discontinued at DiGi Electronics, making equivalent and substitute parts essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	SN74LVC2T45DCUTG4
Manufacturer	Texas Instruments
Series	74LVC
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	420 Mbps
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Package / Case	8-VFSOP (0.091", 2.30mm Width)
Supplier Device Package	8-VSSOP
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitution for the SN74LVC2T45DCUTG4 is determined by the following critical parameters:

Translator Type: Voltage Level (bidirectional capability required)
Channel Configuration: 1 circuit with 2 channels per circuit
Voltage Operating Range: VCCA and VCCB support (minimum 1.65 V ~ 5.5 V for direct compatibility)
Output Type: Tri-State, Non-Inverted
Data Rate: 420 Mbps minimum
Package: 8-VFSOP (0.091", 2.30mm Width) / 8-VSSOP
Mounting Type: Surface Mount

Substitute parts are grouped into two categories:

Category 1: Parametric Equivalents (Texas Instruments 74LVC Series) Parts with identical electrical specifications and packaging, differing only in packaging format (Cut Tape vs. Digi-Reel).

Category 2: Manufacturer Recommended Substitutes (Nexperia & Texas Instruments Extended Range) Parts with enhanced voltage operating ranges (1.2 V ~ 5.5 V), extended temperature ratings (-40°C ~ 125°C), and automotive qualifications (AEC-Q100), maintaining identical channel configuration and data rate specifications.

Parameter Comparison

Parameter	SN74LVC2T45DCUTG4	SN74LVC2T45DCURG4	SN74LVC2T45DCUT	74LVC2T45DC,125	74LVC2T45DC-Q100H	74LVCH2T45DC,125	74LVCH2T45DC-Q100H
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.
Series	74LVC	74LVC	74LVC	74LVC	74AVC	74LVCH	74LVCH
Translator Type	Voltage Level	Voltage Level	Voltage Level	Voltage Level	Voltage Level	Voltage Level	Voltage Level
Channel Type	Bidirectional	Bidirectional	Bidirectional	Bidirectional	Bidirectional	Bidirectional	Bidirectional
Channels per Circuit	2	2	2	2	2	2	2
Voltage - VCCA	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V
Voltage - VCCB	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	1.65 V ~ 5.5 V	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V	1.2 V ~ 5.5 V
Output Type	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted	Tri-State, Non-Inverted
Data Rate	420 Mbps	420 Mbps	420 Mbps	420 Mbps	420 Mbps	420 Mbps	420 Mbps
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-VFSOP (0.091", 2.30mm Width)	8-VFSOP (0.091", 2.30mm Width)	8-VFSOP (0.091", 2.30mm Width)	8-VFSOP (0.091", 2.30mm Width)	8-VFSOP (0.091", 2.30mm Width)	8-VFSOP (0.091", 2.30mm Width)	8-VFSOP (0.091", 2.30mm Width)
Supplier Device Package	8-VSSOP	8-VSSOP	8-VSSOP	8-VSSOP	8-VSSOP	8-VSSOP	8-VSSOP
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Discontinued at DiGi Electronics	Discontinued at DiGi Electronics	Active	Active	Active	Active	Active
Automotive Grade	—	—	—	—	AEC-Q100	—	AEC-Q100

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): SN74LVC2T45DCUT is the primary direct replacement, offering identical electrical specifications and package configuration with active product status. This part maintains the 1.65 V ~ 5.5 V voltage range and -40°C ~ 85°C operating temperature of the original SN74LVC2T45DCUTG4.

For Enhanced Operating Range: 74LVC2T45DC,125 and 74LVCH2T45DC,125 provide extended voltage support (1.2 V ~ 5.5 V) and wider temperature range (-40°C ~ 125°C), suitable for applications requiring lower voltage domain operation or higher temperature environments. Both parts maintain active product status.

For Automotive Applications: 74LVC2T45DC-Q100H and 74LVCH2T45DC-Q100H are AEC-Q100 qualified automotive-grade alternatives with extended operating temperature range (-40°C ~ 125°C) and lower minimum voltage support (1.2 V). These parts are recommended for automotive and mission-critical applications requiring formal qualification.

Packaging Considerations: SN74LVC2T45DCURG4 is functionally equivalent to the original part but supplied in Cut Tape & Digi-Reel packaging format rather than the original Digi-Reel format. Verify packaging compatibility with assembly equipment before selection.

Frequently Asked Questions (FAQ)

Q: Can I use SN74LVC2T45DCUT as a direct replacement for SN74LVC2T45DCUTG4? A: Yes. Both parts share identical electrical specifications, channel configuration, data rate, and package dimensions. The primary difference is product status: SN74LVC2T45DCUT is active while SN74LVC2T45DCUTG4 is discontinued.

Q: What is the difference between the 74LVC and 74LVCH series substitutes? A: Both series maintain identical channel configuration, data rate, and package specifications. The 74LVCH series (74LVCH2T45DC,125 and 74LVCH2T45DC-Q100H) offers the same extended voltage range (1.2 V ~ 5.5 V) and temperature range (-40°C ~ 125°C) as the 74LVC extended variants, with no functional difference in translator operation.

Q: Are the Nexperia parts (74LVC2T45DC,125, 74LVCH2T45DC,125) compatible with my existing design? A: Yes, provided your design operates within the specified voltage ranges. Nexperia parts support lower minimum voltage (1.2 V vs. 1.65 V) and extended temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C), making them backward compatible with designs using the original part.

Q: What does AEC-Q100 qualification mean? A: AEC-Q100 is an automotive industry qualification standard. Parts bearing this qualification (74LVC2T45DC-Q100H and 74LVCH2T45DC-Q100H) have undergone stress testing and reliability validation for automotive applications. These parts are suitable for automotive and high-reliability applications.

Q: Does packaging format affect electrical performance? A: No. Cut Tape (CT) & Digi-Reel and Tape & Reel (TR) packaging formats do not affect electrical performance. Packaging selection depends on assembly equipment compatibility and production volume requirements.

Q: Can I substitute a part with a lower minimum voltage rating (1.2 V) into a design specified for 1.65 V minimum? A: Yes. Parts with 1.2 V ~ 5.5 V voltage range are backward compatible with designs requiring 1.65 V ~ 5.5 V operation, as they support the full original voltage range plus additional lower voltage capability.

Q: What inventory levels are available for these substitute parts? A: SN74LVC2T45DCUT (2,100 pcs), 74LVC2T45DC,125 (4,007 pcs), 74LVC2T45DC-Q100H (10,100 pcs), 74LVCH2T45DC,125 (16,524 pcs), and 74LVCH2T45DC-Q100H (4,100 pcs) are available as new original stock.

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