FSA2267AMUX Equivalent & Substitute Parts

Part Overview

The FSA2267AMUX is a dual SPDT audio switch IC manufactured by onsemi in a 10-MSOP surface mount package. This component functions as a 2:1 multiplexer/demultiplexer with single supply operation and is designed for audio signal routing applications. The FSA2267AMUX is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity.

Key Parameters

Parameter	FSA2267AMUX
Switch Circuit Type	SPDT
Number of Channels	2
Multiplexer/Demultiplexer Circuit	2:1
On-State Resistance (Max)	350mOhm (Typ)
Voltage - Supply, Single (V+)	2.3V ~ 4.3V
-3dB Bandwidth	45MHz
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package	10-MSOP (0.118", 3.00mm Width)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the FSA2267AMUX is determined by the following critical parameters:

Switch Circuit Configuration: SPDT topology with 2:1 multiplexer/demultiplexer function
Number of Channels: Dual channel (2 circuits)
On-State Resistance: Maximum 350mOhm specification
Supply Voltage Range: Single supply operation within compatible voltage windows
Bandwidth Performance: Minimum -3dB bandwidth of 45MHz for audio applications
Operating Temperature Range: -40°C to 85°C
Surface Mount Packaging: Compatible with PCB assembly processes
Compliance: ROHS3 compliance and REACH unaffected status

Two substitute parts meet these criteria with varying trade-offs in package form factor and electrical performance characteristics.

Parameter Comparison

Parameter	FSA2267AMUX	NLAS5223BMNR2G	TS5A26542YZTR
Manufacturer	onsemi	onsemi	Texas Instruments
Switch Circuit	SPDT	SPDT	SPDT
Multiplexer/Demultiplexer Circuit	2:1	2:1	2:1
Number of Circuits	2	2	2
On-State Resistance (Max)	350mOhm	350mOhm	750mOhm
Voltage - Supply, Single (V+)	2.3V ~ 4.3V	1.65V ~ 4.5V	2.25V ~ 5.5V
-3dB Bandwidth	45MHz	19MHz	43MHz
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	10-MSOP	10-WQFN (1.4x1.8)	12-DSBGA (1.9x1.4)
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

NLAS5223BMNR2G (onsemi): This substitute maintains identical on-state resistance (350mOhm) and operating temperature range as the FSA2267AMUX. The part is in active production status, ensuring long-term availability. The 10-WQFN package represents a compact alternative to the 10-MSOP footprint. The supply voltage range is expanded (1.65V ~ 4.5V), providing greater flexibility for low-voltage applications. The -3dB bandwidth of 19MHz is reduced compared to the original part; this substitute is suitable for audio applications where bandwidth requirements do not exceed 19MHz. ROHS3 compliance and REACH unaffected status are maintained.

TS5A26542YZTR (Texas Instruments): This substitute provides active product status with the highest supply voltage range (2.25V ~ 5.5V) among the three options. The -3dB bandwidth of 43MHz closely matches the original FSA2267AMUX specification. The on-state resistance is doubled to 750mOhm, which may impact signal integrity in low-impedance audio circuits. The 12-DSBGA package requires different PCB layout and assembly considerations compared to the original MSOP package. ROHS3 compliance and REACH unaffected status are maintained. This substitute is appropriate for applications where higher supply voltage tolerance and bandwidth performance are prioritized over on-state resistance matching.

Frequently Asked Questions (FAQ)

Q: Can NLAS5223BMNR2G directly replace FSA2267AMUX in existing designs?

A: NLAS5223BMNR2G maintains the same on-state resistance (350mOhm) and operating temperature range. However, the package changes from 10-MSOP to 10-WQFN, requiring PCB layout modification. The reduced -3dB bandwidth (19MHz vs. 45MHz) must be evaluated against application requirements. Supply voltage range is expanded, which is generally beneficial.

Q: What are the trade-offs when using TS5A26542YZTR as a substitute?

A: TS5A26542YZTR offers active product status and -3dB bandwidth (43MHz) comparable to the original part. The primary trade-off is doubled on-state resistance (750mOhm vs. 350mOhm), which increases signal attenuation. The package changes to 12-DSBGA, requiring significant PCB redesign. Supply voltage range is expanded to 2.25V ~ 5.5V.

Q: Which substitute is recommended for audio signal routing applications?

A: Selection depends on specific application constraints. NLAS5223BMNR2G is preferred when on-state resistance matching is critical and bandwidth requirements do not exceed 19MHz. TS5A26542YZTR is preferred when bandwidth performance near 45MHz is required and higher on-state resistance is acceptable.

Q: Are both substitutes compliant with environmental and regulatory requirements?

A: Both NLAS5223BMNR2G and TS5A26542YZTR are ROHS3 compliant and REACH unaffected, matching the compliance status of the FSA2267AMUX.

Q: What package considerations apply to each substitute?

A: FSA2267AMUX uses 10-MSOP (0.118", 3.00mm width). NLAS5223BMNR2G uses 10-WQFN (1.4x1.8), a smaller footprint. TS5A26542YZTR uses 12-DSBGA (1.9x1.4), a ball grid array package. Package selection impacts PCB layout, assembly process, and thermal management.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message