NLAS324US Equivalent & Substitute Parts

Part Overview

The NLAS324US is a 2-circuit IC switch with SPST-NC (Single Pole Single Throw - Normally Closed) configuration, rated for 25Ohm on-state resistance. This component is designed for interface applications requiring low-impedance switching in surface mount packages. The NLAS324US is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

NLAS324US

onsemiIn Stock: 29070NLAS324US Datasheet

Current PartRFQ

NLAS324USG

onsemiIn Stock: 4255NLAS324USG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NLAS324US is determined by strict equivalence across the following critical parameters:

• Switch circuit topology: SPST - NC configuration
• Circuit count: 2 circuits
• Multiplexer ratio: 1:1
• On-state resistance: 25Ohm maximum
• Supply voltage range: 2V ~ 5.5V
• Switch timing characteristics: 9ns (Ton), 10ns (Toff)
• Bandwidth: 220MHz (-3dB)
• Charge injection: 3pC
• Channel capacitance: 10pF (both CS(off) and CD(off))
• Leakage current: 1nA maximum
• Operating temperature: -55°C ~ 125°C
• Package type: 8-VFSOP surface mount

The NLAS324USG qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility. The primary distinction is packaging format (Tape & Reel versus bulk) and RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

The NLAS324USG is a direct electrical and mechanical equivalent to the NLAS324US. Both parts share identical functional specifications across all critical switching parameters, voltage ratings, timing characteristics, and thermal operating range.

The NLAS324USG offers improved compliance status, meeting ROHS3 requirements, whereas the NLAS324US is RoHS non-compliant. For applications subject to RoHS regulations or environmental compliance mandates, the NLAS324USG is the appropriate selection.

Both parts are classified as obsolete products. Procurement decisions should account for available inventory levels and long-term component availability. The NLAS324USG is available in Tape & Reel packaging format, suitable for automated assembly processes, while the NLAS324US is supplied in bulk packaging.

Frequently Asked Questions (FAQ)

Q: Can NLAS324USG be used as a direct replacement for NLAS324US in existing designs?

A: Yes. The NLAS324USG is electrically and mechanically equivalent. All switching characteristics, voltage ratings, timing parameters, and thermal specifications are identical. PCB layout and circuit design require no modification.

Q: What is the primary difference between these two parts?

A: The NLAS324USG is supplied in Tape & Reel packaging and meets ROHS3 compliance standards. The NLAS324US is supplied in bulk packaging and is RoHS non-compliant. Electrical performance is identical.

Q: Are there any compatibility concerns with the 8-VFSOP package?

A: No. Both parts use the same 8-VFSOP (0.091", 2.30mm Width) surface mount package. Footprint, pin configuration, and soldering requirements are identical.

Q: Why is RoHS compliance status different between these parts?

A: The NLAS324USG was manufactured to meet ROHS3 compliance requirements, while the NLAS324US predates or does not meet these standards. This reflects manufacturing date and regulatory requirements at the time of production.

Q: Can either part be used in high-frequency applications?

A: Yes. Both parts support -3dB bandwidth of 220MHz and switch times of 9ns (Ton) and 10ns (Toff), making them suitable for high-frequency interface switching applications within the specified operating parameters.

Q: What supply voltage range is supported?

A: Both parts operate across a 2V to 5.5V single supply voltage range, accommodating low-voltage digital logic and mixed-signal applications.