FSAV450MTCX Equivalent & Substitute Parts

Part Overview

The FSAV450MTCX is a quad 2:1 video switch IC manufactured by onsemi in a 16-TSSOP package. This interface component is designed for video multiplexing applications with RGB capability and operates across a 4.5V to 5.5V supply range. The part is classified as obsolete, making equivalent substitute components necessary for new designs and ongoing production support.

Substiute Parts

FSAV450MTCX

onsemiIn Stock: 3333FSAV450MTCX Datasheet

Current PartRFQ

PI5A100QE

Diodes IncorporatedIn Stock: 1464PI5A100QE Datasheet

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PI5A100QEX

Diodes IncorporatedIn Stock: 17215PI5A100QEX Datasheet

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TS3A5018DBQR

Texas InstrumentsIn Stock: 17447TS3A5018DBQR Datasheet

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TS3A5018PW

Texas InstrumentsIn Stock: 1250TS3A5018PW Datasheet

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TS3A5018PWR

Texas InstrumentsIn Stock: 109503TS3A5018PWR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FSAV450MTCX are qualified based on the following electrical and mechanical parameters:

Core Substitution Criteria:

• Switch circuit type: SPDT (Single Pole Double Throw)
• Multiplexer/Demultiplexer configuration: 2:1
• Number of circuits: 4 channels
• Operating temperature range: -40°C ~ 85°C (TA)
• Mounting type: Surface Mount
• On-state resistance compatibility: Maximum 10Ω (within acceptable tolerance for video switching applications)
• Supply voltage overlap: Minimum 4.5V to 5.5V operating range support

Substitute Parts Identified:

• PI5A100QE (Diodes Incorporated, 16-QSOP, Tube packaging)
• PI5A100QEX (Diodes Incorporated, 16-QSOP, Tape & Reel packaging)
• TS3A5018DBQR (Texas Instruments, 16-SSOP, Cut Tape & Digi-Reel packaging)
• TS3A5018PW (Texas Instruments, 16-TSSOP, Tube packaging)
• TS3A5018PWR (Texas Instruments, 16-TSSOP, Cut Tape & Digi-Reel packaging)

All substitute parts maintain the same functional architecture (4-channel SPDT 2:1 switch) and operate within the required temperature range. Package variations (TSSOP, SSOP, QSOP) are mechanically compatible with standard surface-mount assembly processes.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TS3A5018PWR

TS3A5018PWR is the preferred substitute for FSAV450MTCX based on the following factors:

• Active product status with full manufacturing support and long-term availability
• Identical 16-TSSOP package footprint, eliminating PCB redesign requirements
• ROHS3 compliance and MSL 1 rating match the original part's environmental specifications
• Cut Tape & Digi-Reel packaging supports both prototype and production volumes
• Highest inventory availability (109,400 pcs) ensures supply chain continuity

Secondary Recommendation: TS3A5018PW

TS3A5018PW provides an alternative with identical package and electrical characteristics. However, this part carries a Last Time Buy status, limiting its suitability for new long-term designs. Inventory is limited (1,220 pcs).

Alternative Recommendation: PI5A100QEX

PI5A100QEX offers active product status and high inventory (17,142 pcs) but requires package migration from 16-TSSOP to 16-QSOP. This substitution is viable for designs where PCB layout modification is acceptable. ROHS3 compliance and MSL 1 rating are maintained.

Not Recommended: TS3A5018DBQR

While functionally equivalent, TS3A5018DBQR uses a 16-SSOP package and carries MSL 2 (1 Year) moisture sensitivity, introducing additional handling and storage constraints compared to the original MSL 1 specification.

Frequently Asked Questions (FAQ)

Q: Can TS3A5018PWR directly replace FSAV450MTCX without PCB modifications?

A: Yes. Both parts use the 16-TSSOP package with identical pinout and footprint. No PCB layout changes are required for this substitution.

Q: What is the impact of the lower supply voltage range on TS3A5018PWR (1.65V ~ 3.6V vs. 4.5V ~ 5.5V)?

A: The TS3A5018PWR operates at lower voltage levels than the original FSAV450MTCX. If your circuit requires 4.5V to 5.5V operation, TS3A5018PWR is not suitable. In this case, PI5A100QEX (2V ~ 6V range) is the appropriate substitute.

Q: Does the reduced -3dB bandwidth of substitute parts affect video signal integrity?

A: The FSAV450MTCX specifies 800MHz bandwidth, while TS3A5018PWR provides 300MHz and PI5A100QEX provides 230MHz. For standard video applications (composite, component, or HDMI), these bandwidth specifications remain adequate. Applications requiring ultra-high-frequency video signals may require bandwidth verification against specific signal requirements.

Q: Are there packaging considerations when switching from TSSOP to QSOP or SSOP?

A: Yes. While all packages are surface-mount compatible, QSOP (0.154" width) and SSOP (0.154" width) have different pitch and body dimensions than TSSOP (0.173" width). PCB footprint redesign is necessary for these package migrations. TSSOP-to-TSSOP substitutions (TS3A5018PW or TS3A5018PWR) eliminate this requirement.

Q: What is the significance of MSL 2 rating on TS3A5018DBQR?

A: MSL 2 requires controlled storage conditions (1 Year shelf life at specified humidity levels) before assembly. MSL 1 parts have unlimited shelf life. If your supply chain cannot accommodate MSL 2 handling protocols, select MSL 1 alternatives (TS3A5018PWR, TS3A5018PW, or PI5A100QEX).

Q: Is ROHS3 compliance mandatory for my application?

A: ROHS3 compliance is required for products sold in the European Union and many other markets. All active substitute parts (PI5A100QE, PI5A100QEX, TS3A5018DBQR, TS3A5018PW, TS3A5018PWR) are ROHS3 compliant. Verify your regional regulatory requirements before final part selection.

Q: Which substitute part offers the best long-term availability?

A: TS3A5018PWR has the highest inventory (109,400 pcs) and active product status, ensuring sustained availability. PI5A100QEX (17,142 pcs, active) is the secondary choice. TS3A5018PW should be avoided for new designs due to Last Time Buy status.