74LVC2G157DCUTG4 Equivalent & Substitute Parts

Part Overview

The 74LVC2G157DCUTG4 is a Data Selector/Multiplexer integrated circuit in the 74LVC logic family, manufactured by Texas Instruments. This component functions as a 1 x 2:1 multiplexer in an 8-VSSOP surface mount package. The part is currently discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	74LVC2G157DCUTG4
Manufacturer	Texas Instruments
Category	Logic
Type	Data Selector/Multiplexer
Circuit Configuration	1 x 2:1
Independent Circuits	1
Current - Output High	32mA
Current - Output Low	32mA
Voltage Supply Source	Single Supply
Voltage - Supply Range	1.65V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	8-VFSOP (0.091", 2.30mm Width)
Supplier Device Package	8-VSSOP
Series	74LVC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution for the 74LVC2G157DCUTG4 is determined by strict equivalence across the following critical parameters:

Circuit Configuration: 1 x 2:1 multiplexer topology
Output Current Specifications: 32mA high and low output current
Supply Voltage Range: 1.65V ~ 5.5V single supply operation
Operating Temperature Range: -40°C ~ 85°C
Package Type: 8-VSSOP surface mount package
Electrical Compliance: ROHS3 compliant, REACH unaffected status
Base Product Number: 74LVC2G157 series

All substitute parts listed maintain identical electrical and mechanical specifications. Differences exist only in packaging format (tape and reel configurations) and product availability status.

Parameter Comparison

Parameter	74LVC2G157DCUTG4	74LVC2G157DCURG4	SN74LVC2G157DCUR	SN74LVC2G157DCUT
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Type	Data Selector/Multiplexer	Data Selector/Multiplexer	Multiplexer	Multiplexer
Circuit Configuration	1 x 2:1	1 x 2:1	1 x 2:1	1 x 2:1
Independent Circuits	1	1	1	1
Current - Output High, Low	32mA, 32mA	32mA, 32mA	32mA, 32mA	32mA, 32mA
Voltage Supply Source	Single Supply	Single Supply	Single Supply	Single Supply
Voltage - Supply	1.65V ~ 5.5V	1.65V ~ 5.5V	1.65V ~ 5.5V	1.65V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
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)
Supplier Device Package	8-VSSOP	8-VSSOP	8-VSSOP	8-VSSOP
Series	74LVC	74LVC	74LVC	74LVC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Discontinued at DiGi Electronics	Discontinued at DiGi Electronics	Active	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status):

SN74LVC2G157DCUR and SN74LVC2G157DCUT are the preferred substitutes for the 74LVC2G157DCUTG4. Both parts maintain active product status at Texas Instruments, ensuring long-term availability and supply chain continuity. These parts are functionally and electrically identical to the original part number, with differences limited to packaging format (Cut Tape and Digi-Reel configurations).

Secondary Substitute (Discontinued Status):

74LVC2G157DCURG4 is a parametric equivalent with identical electrical specifications but shares discontinued status with the original part. This option is suitable only when active alternatives are unavailable.

Compliance Basis:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for electronic component procurement. Moisture sensitivity level remains at MSL 1 (Unlimited) across all variants, indicating no special handling requirements during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can SN74LVC2G157DCUR directly replace 74LVC2G157DCUTG4 in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The SN prefix and different packaging designation (DCUR vs. DCUTG4) reflect only the tape and reel format, not functional differences. Pin configuration, electrical performance, and package footprint are identical.

Q: What is the difference between the substitute part numbers?

A: The differences are packaging-related only. 74LVC2G157DCUTG4 and 74LVC2G157DCURG4 use Digi-Reel packaging, while SN74LVC2G157DCUR and SN74LVC2G157DCUT use Cut Tape and Digi-Reel formats. All parts use the same 8-VSSOP package with identical pin assignments and electrical characteristics.

Q: Why is the original part number discontinued?

A: Product discontinuation at DiGi Electronics does not indicate functional obsolescence. The 74LVC2G157 base product remains in production. Active alternatives with identical specifications are available for new designs and replacements.

Q: Are there any thermal or electrical performance differences between these parts?

A: No. All parts operate within the same voltage range (1.65V ~ 5.5V), temperature range (-40°C ~ 85°C), and output current specifications (32mA high and low). Thermal and electrical performance are identical.

Q: What is the MSL rating, and does it affect component handling?

A: All parts carry MSL 1 (Unlimited), indicating no moisture sensitivity. Standard handling procedures apply without special drying or storage requirements prior to assembly.

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