FSAV450MTC Equivalent & Substitute Parts

Part Overview

The FSAV450MTC 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 currently obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Key Parameters

Parameter	FSAV450MTC
Manufacturer	onsemi
Package / Case	16-TSSOP (0.173", 4.40mm Width)
Switch Circuit	SPDT
Multiplexer/Demultiplexer Circuit	2:1
Number of Channels	4
On-State Resistance (Max)	7Ω
Voltage - Supply, Single (V+)	4.5V ~ 5.5V
-3dB Bandwidth	800MHz
Operating Temperature	-40°C ~ 85°C (TA)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the FSAV450MTC is determined by the following core electrical and mechanical parameters:

Switch topology: SPDT (Single Pole Double Throw) with 2:1 multiplexer/demultiplexer configuration
Channel count: 4 independent circuits
Package compatibility: 16-pin surface mount packages (TSSOP, SSOP, QSOP variants acceptable)
Operating temperature range: -40°C to 85°C
On-state resistance: Maximum 10Ω (FSAV450MTC specifies 7Ω maximum)
Supply voltage overlap: Parts must operate within or encompass the 4.5V to 5.5V range

Substitute parts are grouped into two categories based on package type and supply voltage characteristics:

Group 1 - 16-TSSOP Package (Direct Package Match):

TS3A5018PW (Tube packaging)
TS3A5018PWR (Cut Tape & Digi-Reel packaging)

Group 2 - Alternative 16-Pin Packages (SSOP/QSOP):

TS3A5018DBQR (16-SSOP)
PI5A100QE (16-QSOP, Tube packaging)
PI5A100QEX (16-QSOP, Tape & Reel packaging)

Parameter Comparison

Parameter	FSAV450MTC	TS3A5018PWR	TS3A5018PW	TS3A5018DBQR	PI5A100QEX	PI5A100QE
Manufacturer	onsemi	Texas Instruments	Texas Instruments	Texas Instruments	Diodes Incorporated	Diodes Incorporated
Switch Circuit	SPDT	SPDT	SPDT	SPDT	SPDT	SPDT
Multiplexer/Demultiplexer Circuit	2:1	2:1	2:1	2:1	2:1	2:1
Number of Circuits	4	4	4	4	4	4
On-State Resistance (Max)	7Ω	10Ω	10Ω	10Ω	10Ω	10Ω
Voltage - Supply, Single (V+)	4.5V ~ 5.5V	1.65V ~ 3.6V	1.65V ~ 3.6V	1.65V ~ 3.6V	2V ~ 6V	2V ~ 6V
-3dB Bandwidth	800MHz	300MHz	300MHz	300MHz	230MHz	230MHz
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	16-TSSOP (0.173", 4.40mm)	16-TSSOP (0.173", 4.40mm)	16-TSSOP (0.173", 4.40mm)	16-SSOP (0.154", 3.90mm)	16-QSOP (0.154", 3.90mm)	16-SSOP (0.154", 3.90mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Last Time Buy	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified

Engineering Selection Recommendations

For direct package compatibility (16-TSSOP):

TS3A5018PWR is the preferred substitute. It maintains the 16-TSSOP package footprint, operates across -40°C to 85°C, and carries Active product status with ROHS3 compliance. Supply voltage range is 1.65V to 3.6V, which does not overlap the original 4.5V to 5.5V specification. Circuit designs operating at 4.5V to 5.5V require voltage level translation or redesign.

TS3A5018PW offers identical electrical specifications but carries Last Time Buy status, limiting long-term availability.

For alternative package options:

TS3A5018DBQR (16-SSOP) provides Active status and ROHS3 compliance with the same electrical characteristics as TS3A5018PWR. The 16-SSOP package requires PCB layout modification from the original 16-TSSOP design.

PI5A100QEX (16-QSOP, Tape & Reel) and PI5A100QE (16-QSOP, Tube) both feature supply voltage range of 2V to 6V, which encompasses the original 4.5V to 5.5V specification. Both carry Active product status and ROHS3 compliance. The 16-QSOP package differs from 16-TSSOP and requires PCB layout modification.

Frequently Asked Questions (FAQ)

Q: Can TS3A5018PWR directly replace FSAV450MTC without circuit modification?

A: TS3A5018PWR maintains the 16-TSSOP package and pinout compatibility. However, the supply voltage range (1.65V to 3.6V) does not support the original 4.5V to 5.5V specification. Circuit designs must operate within the 1.65V to 3.6V range or incorporate voltage level translation.

Q: What is the difference between TS3A5018PWR and TS3A5018PW?

A: Both parts are identical electrically and in package type (16-TSSOP). The difference is packaging format: TS3A5018PWR is supplied in Cut Tape & Digi-Reel format with 109,400 units in stock, while TS3A5018PW is supplied in Tube format with 1,220 units in stock. TS3A5018PW carries Last Time Buy status.

Q: Why do PI5A100QEX and PI5A100QE have wider supply voltage range?

A: PI5A100QEX and PI5A100QE are specified for 2V to 6V operation, which encompasses the original 4.5V to 5.5V range. These parts use 16-QSOP packaging instead of 16-TSSOP, requiring PCB layout changes.

Q: What are the package differences between 16-TSSOP, 16-SSOP, and 16-QSOP?

A: 16-TSSOP (0.173", 4.40mm width) is the original package. 16-SSOP and 16-QSOP are both 0.154" width (3.90mm). While all are 16-pin surface mount packages, they have different lead pitches and footprints. Direct PCB layout modification is required when switching between these package types.

Q: Is TS3A5018DBQR suitable for video switching applications?

A: TS3A5018DBQR is a 4-channel SPDT 2:1 switch with 300MHz -3dB bandwidth. The original FSAV450MTC specifies 800MHz bandwidth for video applications. TS3A5018DBQR operates at lower bandwidth but maintains the same switch topology and channel configuration.

Q: What is the significance of Product Status (Active vs. Last Time Buy vs. Obsolete)?

A: Active status indicates ongoing production and long-term availability. Last Time Buy indicates limited remaining stock with no future production. Obsolete indicates the part is no longer manufactured. For new designs, Active status parts are recommended for supply chain continuity.

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