74LVC157AD,112 Equivalent & Substitute Parts

Part Overview

The 74LVC157AD,112 is a 4 x 2:1 multiplexer logic integrated circuit manufactured by Nexperia USA Inc. in a 16-SOIC surface mount package. This device functions as a data selector, routing one of two input signals to a single output based on control logic. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	74LVC157AD,112
Manufacturer	Nexperia USA Inc.
Type	Multiplexer
Circuit Configuration	4 x 2:1
Independent Circuits	1
Current - Output High, Low	24mA, 24mA
Voltage Supply Source	Single Supply
Voltage - Supply Range	1.2V ~ 3.6V
Operating Temperature Range	-40°C ~ 125°C
Package / Case	16-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 74LVC157AD,112 is determined by the following critical parameters:

Circuit configuration: 4 x 2:1 multiplexer topology
Package type: 16-SOIC surface mount form factor
Output current capability: 24mA high and low
Single supply voltage operation
Voltage supply range compatibility
Operating temperature range
RoHS and environmental compliance

Substitute parts are grouped into two categories based on voltage supply range compatibility:

Category A - Extended Temperature Range (1.2V ~ 3.6V, -40°C ~ 125°C): Parts with identical or broader voltage and temperature specifications to the main part.

Category B - Standard Temperature Range (2V ~ 3.6V, -40°C ~ 85°C): Parts with narrower voltage minimum and reduced upper temperature limit, suitable for applications not requiring extended temperature operation.

Parameter Comparison

Part Number	Manufacturer	Series	Circuit	Voltage Supply (V)	Temp Range (°C)	Package	Status	Output Current (mA)
74LVC157AD,112	Nexperia USA Inc.	74LVC	4 x 2:1	1.2 ~ 3.6	-40 ~ 125	16-SOIC	Obsolete	24/24
SN74LVC157AQDREP	Texas Instruments	74LVC	4 x 2:1	2.0 ~ 3.6	-40 ~ 125	16-SOIC	Active	24/24
SN74LVC157AQDRG4Q1	Texas Instruments	74LVC	4 x 2:1	2.0 ~ 3.6	-40 ~ 125	16-SOIC	Active	24/24
SN74LVC157ADT	Texas Instruments	74LVC	4 x 2:1	2.0 ~ 3.6	-40 ~ 85	16-SOIC	Active	24/24
SN74LVC157ADR	Texas Instruments	74LVC	4 x 2:1	2.0 ~ 3.6	-40 ~ 85	16-SOIC	Active	24/24
SN74LVC157AD	Texas Instruments	74LVC	4 x 2:1	2.0 ~ 3.6	-40 ~ 85	16-SOIC	Active	24/24
SN74LVC157ADRG3	Texas Instruments	74LVC	4 x 2:1	2.0 ~ 3.6	-40 ~ 85	16-SOIC	Active	24/24
SN74LVC157ADE4	Texas Instruments	74LVC	4 x 2:1	2.0 ~ 3.6	-40 ~ 85	16-SOIC	Active	24/24
74LCX157M	Fairchild Semiconductor	74LCX	4 x 2:1	2.0 ~ 3.6	-40 ~ 85	16-SOIC	Active	24/24
74LCX157MX	Fairchild Semiconductor	74LCX	4 x 2:1	2.0 ~ 3.6	-40 ~ 85	16-SOIC	Active	24/24
MC74LCX157DR2G	onsemi	74LCX	4 x 2:1	2.0 ~ 3.6	-40 ~ 85	16-SOIC	Active	24/24

Engineering Selection Recommendations

For Extended Temperature Applications (-40°C to 125°C):

SN74LVC157AQDRG4Q1 is the primary substitute. This part maintains the full temperature range of the original 74LVC157AD,112 and includes automotive-grade qualification (AEC-Q100) with active product status. SN74LVC157AQDREP provides an alternative with identical specifications and active status.

For Standard Temperature Applications (-40°C to 85°C):

Texas Instruments SN74LVC157 series parts (SN74LVC157ADT, SN74LVC157ADR, SN74LVC157AD, SN74LVC157ADRG3, SN74LVC157ADE4) are direct functional equivalents with active product status. Fairchild Semiconductor 74LCX157 series (74LCX157M, 74LCX157MX) and onsemi MC74LCX157DR2G provide cross-manufacturer alternatives with identical electrical performance and package compatibility.

All substitute parts maintain RoHS3 compliance, MSL Level 1 rating, and identical output current specifications. Selection should prioritize active product status parts and consider packaging requirements (tube, tape & reel) based on procurement needs.

Frequently Asked Questions (FAQ)

Q: Can I use a 74LCX157 series part as a direct replacement for the 74LVC157AD,112?

A: Yes, for applications operating within -40°C to 85°C. The 74LCX157 series maintains identical circuit configuration, output current, and 16-SOIC package. The voltage supply range is 2V ~ 3.6V versus the original 1.2V ~ 3.6V. If your application requires operation below 2V supply voltage, use SN74LVC157AQDREP or SN74LVC157AQDRG4Q1 instead.

Q: What is the difference between SN74LVC157AQDRG4Q1 and other SN74LVC157 variants?

A: SN74LVC157AQDRG4Q1 is qualified to automotive standards (AEC-Q100) and maintains the extended temperature range (-40°C to 125°C). Standard SN74LVC157 variants operate to -40°C to 85°C. Both share identical electrical specifications and 16-SOIC packaging.

Q: Are all substitute parts available in the same packaging options?

A: All substitute parts use the 16-SOIC surface mount package. Packaging formats (tube, tape & reel) vary by manufacturer and part number. Verify packaging availability with your supplier based on production volume requirements.

Q: Does the 74LVC157AD,112 obsolescence affect compatibility with substitute parts?

A: No. All listed substitute parts are functionally equivalent and maintain the same pinout, electrical characteristics, and 16-SOIC package footprint. Direct PCB substitution is possible without design modification.

Q: Which substitute part has the broadest voltage supply range?

A: SN74LVC157AQDREP and SN74LVC157AQDRG4Q1 both support 2V ~ 3.6V supply voltage with extended temperature operation. The original 74LVC157AD,112 specified 1.2V ~ 3.6V. For applications requiring sub-2V operation, verify compatibility with your circuit design.

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