NLVASB3157DFT2 Equivalent & Substitute Parts

Part Overview

The NLVASB3157DFT2 is a 2:1 CMOS multiplexer IC manufactured by onsemi, packaged in SC-88/SC70-6/SOT-363 (6-TSSOP) surface mount configuration. This component functions as a single-circuit SPDT (Single Pole Double Throw) switch with typical on-state resistance of 7Ohm. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

NLVASB3157DFT2

onsemiIn Stock: 1043NLVASB3157DFT2 Datasheet

Current PartRFQ

NLVASB3157DFT2G

onsemiIn Stock: 3766NLVASB3157DFT2G Datasheet

DirectRFQ

74LVC1G3157GW,125

Nexperia USA Inc.In Stock: 3609374LVC1G3157GW,125 Datasheet

SimilarRFQ

SN74LVC1G3157DCKR

UMWIn Stock: 110210SN74LVC1G3157DCKR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NLVASB3157DFT2 is determined by the following mandatory parameters:

• Circuit Configuration: 2:1 multiplexer with single SPDT circuit
• Package Compatibility: 6-TSSOP, SC-88, or SOT-363 surface mount packages
• Supply Voltage Range: 1.65V ~ 5.5V single supply operation
• Operating Temperature Range: Minimum -55°C to 125°C coverage
• On-State Resistance: Maximum 10Ohm (allows tolerance variation from 7Ohm typical)
• Moisture Sensitivity: MSL 1 or equivalent

Three substitute parts meet these criteria with varying compliance profiles and performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

NLVASB3157DFT2G (onsemi): Direct manufacturer equivalent with identical electrical specifications and package compatibility. Obsolete status matches the original part. ROHS3 compliance provides regulatory advantage over the non-compliant original. Recommended for applications requiring exact performance matching with improved environmental compliance.

SN74LVC1G3157DCKR (UMW): Active product status ensures long-term availability and supply chain stability. Maintains -55°C to 125°C operating range and 7Ohm on-state resistance. ROHS3 compliant. Superior -3dB bandwidth (350MHz) and lower channel capacitance (5.2pF) provide performance enhancement. SC70-6 package variant requires PCB layout verification for mechanical compatibility with SC-88 footprints.

74LVC1G3157GW,125 (Nexperia USA Inc.): Active product with highest inventory availability. ROHS3 compliant. Operating temperature range limited to -40°C to 125°C (does not extend to -55°C). On-state resistance of 10Ohm represents acceptable tolerance variation. Highest -3dB bandwidth (300MHz) and lowest leakage current (5µA) among substitutes. Suitable for applications not requiring extended low-temperature operation below -40°C.

Frequently Asked Questions (FAQ)

Q: Can NLVASB3157DFT2G be used as a direct replacement for NLVASB3157DFT2?

A: Yes. Both parts share identical electrical specifications, package configuration (6-TSSOP, SC-88, SOT-363), and circuit topology (2:1 SPDT multiplexer). NLVASB3157DFT2G provides ROHS3 compliance as an additional benefit.

Q: What is the primary difference between the onsemi and Nexperia/UMW substitutes?

A: onsemi parts (NLVASB3157DFT2 and NLVASB3157DFT2G) are obsolete, while Nexperia and UMW alternatives maintain active product status. The 74LVC1G3157 series from Nexperia and UMW offer improved performance metrics (higher bandwidth, lower leakage) and guaranteed long-term availability.

Q: Is the SN74LVC1G3157DCKR package (SC70-6) compatible with SC-88 PCB footprints?

A: SC70-6 and SC-88 are distinct package variants within the SOT-363 family. Physical pin spacing and lead geometry differ. PCB layout verification is required before substitution. Consult package datasheets for dimensional compatibility assessment.

Q: Which substitute part is recommended for new designs?

A: SN74LVC1G3157DCKR or 74LVC1G3157GW,125 are preferred for new designs due to active product status, ROHS3 compliance, and guaranteed supply availability. Selection between these two depends on operating temperature requirements (-55°C minimum vs. -40°C minimum) and on-state resistance tolerance (7Ohm vs. 10Ohm).

Q: Are all substitute parts RoHS compliant?

A: NLVASB3157DFT2G, 74LVC1G3157GW,125, and SN74LVC1G3157DCKR are all ROHS3 compliant. The original NLVASB3157DFT2 is RoHS non-compliant.

Q: What is the impact of on-state resistance variation (7Ohm vs. 10Ohm) on circuit performance?

A: On-state resistance affects signal attenuation and power dissipation in switching applications. The 3Ohm difference between 7Ohm and 10Ohm variants represents a 43% increase in resistance. Applications with tight impedance matching or high-frequency signal integrity requirements should verify compatibility through circuit simulation or prototype testing.